Dr. Harold Christopher Passam

Retired Professor
Agricultural University of Athens, Greece

Highest Degree
Ph.D. in Botany from University of London, United Kingdom

My URL
https://livedna.org/44.31464

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Area of Interest:

Plant and Soil Sciences
Agriculture
Botany
Crop Science
Vegetable Crops

Selected Publications

  1. Karanisa, T., A.A. Alexopoulos, K.A. Akoumianakis, I.C. Karapanos and H.C. Passam, 2019. Effect of surface coating with waxes on the dormancy of potato tubers grown from True Potato Seed (TPS). Acta Hortic., 1242: 711-718.
    CrossRef  |  Direct Link  |  

  2. Makrogianni, D.I., I.C. Karapanos and H.C. Passam, 2018. Seasonal fluctuations in pollen production and viability in eggplant and the quality of seed-containing and seedless (auxin-set) fruits. J. Plant Growth Regul., 37: 937-946.
    CrossRef  |  Direct Link  |  

  3. Tsamaidi, D., D. Daferera, I.C. Karapanos and H.C. Passam, 2017. The effect of water deficiency and salinity on the growth and quality of fresh dill (Anethum graveolens L.) during autumn and spring cultivation. Int. J. Plant Prod., 11: 33-46.
    CrossRef  |  Direct Link  |  

  4. Makrogianni, D.I., A. Tsistraki, I.C. Karapanos and H.C. Passam, 2017. Nutritional value and antioxidant content of seed-containing and seedless eggplant fruits of two cultivars grown under protected cultivation during autumn-winter and spring-summer. J. Sci. Food Agric., 97: 3752-3760.
    CrossRef  |  Direct Link  |  

  5. Alexopoulos, A.A., I.C. Karapanos, K.A. Akoumianakis and H.C. Passam, 2017. Effect of gibberellic acid on the growth rate and physiological age of tubers cultivated from true potato seed. J. Plant Growth Regul., 36: 1-10.
    CrossRef  |  Direct Link  |  

  6. Akoumianakis, K.A., A.A. Alexopoulos, I.C. Karapanos, K. Kalatzopoulos, G. Aivalakis and H.C. Passam, 2016. Carbohydrate metabolism and tissue differentiation during potato tuber initiation, growth and dormancy induction. Aust. J. Crop Sci., 10: 185-192.
    Direct Link  |  

  7. Tsamaidi, D. and H.C. Passam, 2015. The effect of modified atmosphere storage on the quality of fresh dill (Anethum graveolens L.). Acta Hortic., 1099: 263-267.
    CrossRef  |  Direct Link  |  

  8. Rekoumi, K., I.C. Karapanos and H.C. Passam, 2015. Comparative storage behaviour of the pods from a large-fruiting and small-fruiting okra cultivar. Int. J. Postharvest Technol. Innov., 5: 177-186.
    CrossRef  |  Direct Link  |  

  9. Karapanos, I.C., M. Chandra, K.A. Akoumianakis, H.C. Passam and A.A. Alexopoulos, 2015. The ripening and quality characteristics of cherry tomato fruit in relation to the time of harvest. Acta Hortic., 1079: 495-500.
    CrossRef  |  Direct Link  |  

  10. Alexopoulos, A.A., I.C. Karapanos, K.A. Akoumianakis and H.C. Passam, 2015. Effect of postharvest application of plant growth regulators on the storage life of tubers grown from True Potato Seed (TPS). Acta Hortic., 1079: 627-631.
    CrossRef  |  Direct Link  |  

  11. Tsaniklidis, G., C. Delis, N. Nikoloudakis, P. Katinakis, H.C. Passam and G. Aivalakis, 2014. L-ascorbic acid metabolism in parthenocarpic and seeded cherry tomatoes. Plant Growth Regul., 72: 141-153.
    CrossRef  |  Direct Link  |  

  12. Petropoulos, S.A., C. Olympios, A. Ropokis, G. Vlachou, G. Ntatsi, A. Paraskevopoulos and H.C. Passam, 2014. Fruit volatiles, quality and yield of watermelon as affected by grafting. J. Agric. Sci. Technol., 16: 873-885.
    Direct Link  |  

  13. Kyriakopoulou, O.G., P. Arens, K.T.B. Pelgrom, I. Karapanos, P. Bebeli and H.C. Passam, 2014. Genetic and morphological diversity of okra (Abelmoschus esculentus [L.] Moench.) genotypes and their possible relationships, with particular reference to Greek landraces. Sci. Hortic., 171: 58-70.
    CrossRef  |  Direct Link  |  

  14. Antonopoulos, A.I., C. Kannavou, I.C. Karapanos, S.A. Petropoulos and H.C. Passam, 2014. The effect of partial dehydration on the quality and composition of plain-leaf, curly-leaf and turnip-rooted parsley during storage. Int. J. Postharvest Technol. Innov., 4: 151-163.
    CrossRef  |  Direct Link  |  

  15. Antonopoulos, A., I.C. Karapanos, S.A. Petropoulos and H.C. Passam, 2014. The effect of two levels of ammonium nitrate application on the yield of plain-leaf, curly-leaf and turnip-rooted parsley and the quality and essential oil composition of the leaves before and after storage in a partially dehydrated form. Analele Universitatii Oradea: Fascicula Biologie, 21: 65-69.
    Direct Link  |  

  16. Thanopoulos, C., S.A. Petropoulos, A.A. Alexopoulos, I.C. Karapanos, E.M. Khah, K.A. Akoumianakis and H.C. Passam, 2013. A comparison of the effectiveness of chlormequat chloride (CCC) application and terminal apex excision to restrict plant height in okra (Abelmoschus esculentus [L.] Moench.) and optimize yield. J. Agric. Sci., 5: 44-50.
    Direct Link  |  

  17. Thanopoulos, C., K.A. Akoumianakis and H.C. Passam, 2013. The effect of season on the growth and maturation of bell peppers. Int. J. Plant Prod., 7: 279-294.
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  18. Thanopoulos, C., D. Bouranis and H.C. Passam, 2013. Comparative development, maturation and ripening of seedless and seed-containing bell pepper fruits. Sci. Hortic., 164: 573-577.
    CrossRef  |  Direct Link  |  

  19. Karapanos, I.C., A.A. Alexopoulos, K.A. Akoumianakis, D. Grigoriou and D. Miliordos et al., 2013. Application of β-naphthoxyacetic acid (β-NOA) improves fruit yield and marketable quality in out-of-season cherry tomatoes (Solanum lycopersicum L. var. cerasiforme (Dunal) DM Spooner, GJ Anderson and RK Jansen) cultivated in unheated greenhouses in the Mediterranean Basin. J. Hortic. Sci. Biotechnol., 88: 165-172.

  20. Tsaniklidis, G., C. Delis, G. Liakopoulos, I. Karapanos, P. Katinakis, H.C. Passam and G. Aivalakis, 2012. Induced parthenocarpic cherry tomato fruits did not shown significant differences in L-ascorbate content but showed different pattern in GalLDH and GME expression. Plant Growth Regul., 68: 493-502.
    CrossRef  |  Direct Link  |  

  21. Tsamaidi, D., I.C. Karapanos, H.C. Passam, D. Daferera and M. Polissiou, 2012. The yield and composition of dill essential oil in relation to N application, season of cultivation and stage of harvest. Acta Hortic., 936: 189-194.
    CrossRef  |  Direct Link  |  

  22. Rekoumi, K., I.C. Karapanos, K.A. Akoumianakis and H.C. Passam, 2012. Nitrogen application affects yield and postharvest quality of okra (Hibiscus esculentus L. cv. 'Boyiatiou'). Int. J. Plant Prod., 6: 59-72.
    CrossRef  |  Direct Link  |  

  23. Rekoumi, K., I.C. Karapanos, K.A. Akoumianakis and H.C. Passam, 2012. Effect of vinyl wrapping on the quality and chilling susceptibility of small grade okra (Abelmoschus esculentus [L.] Moench.) pods during low temperature storage. Int. J. Postharvest Technol. Innov., 2: 387-399.
    CrossRef  |  Direct Link  |  

  24. Petropoulos, S.A., E.M. Khah and H.C. Passam, 2012. Evaluation of rootstocks for watermelon grafting with reference to plant development, yield and fruit quality. Int. J. Plant Prod., 6: 481-492.
    CrossRef  |  Direct Link  |  

  25. Petropoulos, S.A., C. Olympios, G. Ntatsi, C. Akoumianakis and H. Passam, 2012. Effects of grafting and salinity on agronomic characteristics and ion uptake by cucumber plants grown in a closed hydroponic system. Acta Hortic., 952: 637-643.
    CrossRef  |  Direct Link  |  

  26. Omirou, M., C. Papastefanou, D. Katsarou, I. Papastylianou, H.C. Passam, C. Ehaliotis and K.K. Papadopoulou, 2012. Relationships between nitrogen, dry matter accumulation and glucosinolates in Eruca sativa Mills. The applicability of the critical NO3-N levels approach. Plant Soil, 354: 347-358.
    CrossRef  |  Direct Link  |  

  27. Kyriakopoulou, O.G., I.C. Karapanos, G. Tsikritsakis, S. Tsermoulas, A.A. Alexopoulos and H.C. Passam, 2012. Effect of shading on the development and yield of two okra (Hibiscus esculentus L.) cultivars grown under high temperatures. Acta Hortic., 936: 155-159.
    CrossRef  |  Direct Link  |  

  28. Konstantopoulou, E., G. Kapotis, G. Salachas, S.A. Petropoulos, E. Chatzieustratiou, I.C. Karapanos and H.C. Passam, 2012. Effect of nitrogen application on growth parameters, yield and leaf nitrate content of greenhouse lettuce cultivated during three seasons. J. Plant Nutr., 35: 1246-1254.
    CrossRef  |  Direct Link  |  

  29. Khah, E.M., S.A. Petropoulos, I.C. Karapanos and H.C. Passam, 2012. Evaluation of growth media incorporating cotton ginning by-products for vegetable production. Compost Sci. Utiliz., 20: 24-28.
    CrossRef  |  Direct Link  |  

  30. Petropoulos, S.A., E. Constantopoulou, I. Karapanos, C.A. Akoumianakis and H.C. Passam, 2011. Diurnal variation in the nitrate content of parsley foliage. Int. J. Plant Prod., 5: 431-438.
    CrossRef  |  Direct Link  |  

  31. Moustakas, N.K., K.A. Akoumianakis and H.C. Passam, 2011. Patterns of dry biomass accumulation and nutrient uptake by okra (Abelmoschus esculentus (L.) Moench.) under different rates of nitrogen application. Aust. J. Crop Sci., 5: 993-1000.
    Direct Link  |  

  32. Akoumianakis, Κ.A., Ι.C. Karapanos, Μ. Giakoumaki, A.A. Alexopoulos and H.C. Passam, 2011. Nitrogen, season and cultivar affect radish growth, yield, sponginess and hollowness. Int. J. Plant Prod., 5: 111-120.
    Direct Link  |  

  33. Petropoulos, S.A., D. Daferera, M.G. Polissiou and H.C. Passam, 2010. Effect of freezing, drying and the duration of storage on the composition of essential oils of plain-leafed parsley [Petroselinum crispum (Mill.) Nym. ssp. neapolitanum Danert] and turnip-rooted parsley [Petroselinum crispum (Mill.) Nym. ssp. tuberosum (Bernh.) Crov.]. Flavour Fragr. J., 25: 28-34.
    CrossRef  |  Direct Link  |  

  34. Passam, H.C., S. Theodoropoulou, T. Karanissa and I.C. Karapanos, 2010. Influence of harvest time and after-ripening on the seed quality of eggplant. Sci. Hortic., 125: 518-520.
    CrossRef  |  Direct Link  |  

  35. Passam, H.C., D. Makrogianni, F. Gregoriou and I.C. Karapanos, 2010. The size and germination of eggplant seed in relation to fruit maturity at harvest, after-ripening and ethylene application. Analele Universitatii Oradea: Fascicula Biologie, 17: 225-229.
    Direct Link  |  

  36. Konstantopoulou, E., G. Kapotis, G. Salachas, S.A. Petropoulos and H.C. Passam, 2010. Nutritional quality of greenhouse grown lettuce at harvest and after storage in relation to N application and cultivation season. Sci. Hortic. 125: 93.e1-93.e5.
    CrossRef  |  Direct Link  |  

  37. Karapanos, I.C., K.A. Akoumianakis, C.M. Olympios and H.C. Passam, 2010. Tomato pollen respiration in relation to in vitro germination and pollen tube growth under favourable and stress-inducing temperatures. Sexual Plant Reprod., 23: 219-224.
    CrossRef  |  Direct Link  |  

  38. Savvas, D., I. Karapanos, A. Tagaris and H.C. Passam, 2009. Effects of NaCl and silicon on the quality and storage ability of zucchini squash fruit. J. Hortic. Sci. Biotechnol., 84: 381-386.
    CrossRef  |  Direct Link  |  

  39. Savvas, D., C. Olympios and H.C. Passam, 2009. Management of nutrition and irrigation in soil-grown and soilless cultivations in mild-winter climates: Problems, constraints and trends in the Mediterranean region. Acta Hortic., 807: 415-426.
    CrossRef  |  Direct Link  |  

  40. Petropoulos, S.A., D. Daferera, M.G. Polissiou and H.C. Passam, 2009. The effect of salinity on the growth, yield and essential oils of turnip-rooted and leaf parsley cultivated within the Mediterranean region. J. Sci. Food Agric., 89: 1534-1542.
    CrossRef  |  Direct Link  |  

  41. Petropoulos, S.A., D. Daferera, M.G. Polissiou and H.C. Passam, 2009. Effect of nitrogen-application rate on the biomass, concentration and composition of essential oils in the leaves and roots of three types of parsley. J. Plant Nutr. Soil Sci., 172: 210-215.
    CrossRef  |  Direct Link  |  

  42. Karapanos, I.C., K.A. Akoumianakis, C.M. Olympios and H.C. Passam, 2009. The effect of substrate, ADP and uncoupler on the respiration of tomato pollen during incubation in vitro at moderately high temperature. Sexual Plant Reprod., 22: 133-140.
    CrossRef  |  Direct Link  |  

  43. Alexopoulos, A.A., G. Aivalakis, K.A. Akoumianakis and H.C. Passam, 2009. Bromoethane induces dormancy breakage and metabolic changes in tubers derived from true potato seed. Postharvest Biol. Technol., 54: 165-171.
    CrossRef  |  Direct Link  |  

  44. Savvas, D., G. Ntatsi and H.C. Passam, 2008. Plant nutrition and physiological disorders in greenhouse grown tomato, pepper and eggplant. Eur. J. Plant Sci. Biotechnol., 2: 45-61.
    Direct Link  |  

  45. Petropoulos, S.A., D. Daferera, M.G. Polissiou and H.C. Passam, 2008. The effect of water deficit stress on the growth, yield and composition of essential oils of parsley. Sci. Hortic., 115: 393-397.
    CrossRef  |  Direct Link  |  

  46. Petropoulos, S.A., C.M. Olympios and C.M. Passam, 2008. The effect of nitrogen fertilization on plant growth and the nitrate content of leaves and roots of parsley in the Mediterranean region. Scientia Horticult., 118: 255-259.
    CrossRef  |  

  47. Passam, H.C., A.C. Koutri and I.C. Karapanos, 2008. The effect of Chlormequat Chloride (CCC) application at the bolting stage on the flowering and seed production of lettuce plants previously treated with water or gibberellic acid (GA3). Sci. Hortic., 116: 117-121.
    CrossRef  |  Direct Link  |  

  48. Passam, H.C., A. Koutri and I.C. Karapanos, 2008. Comparative effects of Chlormequat Chloride (CCC) and gibberellic acid (GA3) on the flowering and seed production of lettuce. Eur. J. Plant Sci. Biotechnol., 2: 91-93.
    Direct Link  |  

  49. Passam, H.C., 2008. The fruiting species of the Solanaceae. Eur. J. Plant Sci. Biotechnol., 2: 1-2.
    Direct Link  |  

  50. Passam, H.C. and I.C. Karapanos, 2008. Eggplants, peppers and tomatoes: Factors affecting the quality and storage life of fresh and fresh-cut (minimally processed) produce. Eur. J. Plant Sci. Biotechnol., 2: 156-170.
    Direct Link  |  

  51. Benkeblia, N., A.A. Alexopoulos and H.C. Passam, 2008. Physiological and biochemical regulation of dormancy and sprouting in potato tubers (Solanum tuberosum L.). Fruit Veg. Cereal Sci. Biotechnol., 2: 54-68.
    Direct Link  |  

  52. Alexopoulos, A.A., G. Aivalakis, K.A. Akoumianakis and H.C. Passam, 2008. Effect of gibberellic acid on the duration of dormancy of potato tubers produced by plants derived from true potato seed. Postharvest Biol. Technol., 49: 424-430.
    CrossRef  |  Direct Link  |  

  53. Akoumianakis, K.A., H.C. Passam, P.E. Barouchas and N.K. Moustakas, 2008. Effect of cadmium on yield and cadmium concentration in the edible tissues of endive (Cichorium endivia L.) and rocket (Eruca sativa Mill.). J. Food Agric. Environ., 6: 206-209.

  54. Akoumianakis, K.A., G. Aivalakis, A.A. Alexopoulos, I.C. Karapanos, K. Skarmoutsos and H.C. Passam, 2008. Bromoethane-induced changes in respiration rate, ethylene synthesis and enzyme activities in potato tubers in relation to dormancy breakage. J. Hortic. Sci. Biotechnol., 83: 441-446.

  55. Savvas, D., N. Mantzos, P.E. Barouchas, I.L. Tsirogiannis, C. Olympios and H.C. Passam, 2007. Modelling salt accumulation by a bean crop grown in a closed hydroponic system in relation to water uptake. Sci. Hortic., 111: 311-318.
    CrossRef  |  Direct Link  |  

  56. Savvas, D., H.C. Passam, C. Olympios, N. Mantzos, P. Barouchas and D. Kyrkas, 2007. Effects of increasing salinity due to progressive nacl accumulation in the nutrient solution on french beans grown in a closed hydroponic system. Acta Hortic., 747: 531-538.
    Direct Link  |  

  57. Passam, H.C., I.C. Karapanos, P.J. Bebeli and D. Savvas, 2007. A review of recent research on tomato nutrition, breeding and post-harvest technology with reference to fruit quality. Eur. J. Plant Sci. Biotechnol., 1: 1-21.
    Direct Link  |  

  58. Karipidis, C., C. Lympios, H.C. Passam and D. Savvas, 2007. Effect of moisture content of tomato pollen stored cryogenically on in vitro germination, fecundity and respiration during pollen tube growth. J. Hortic. Sci. Biotechnol., 82: 29-34.
    CrossRef  |  Direct Link  |  

  59. Alexopoulos, A.A., K.A. Akoumianakis, S.N. Vemmos and H.C. Passam, 2007. The effect of postharvest application of gibberellic acid and benzyl adenine on the duration of dormancy of potatoes produced by plants grown from TPS. Postharvest Biol. Technol., 46: 54-62.
    CrossRef  |  Direct Link  |  

  60. Alexopoulos, A.A., K.A. Akoumianakis, C.M. Olympios and H.C. Passam, 2007. The effect of the time and mode of application of gibberellic acid and inhibitors of gibberellin biosynthesis on the dormancy of potato tubers grown from true potato seed. J. Sci. Food Agric., 87: 1973-1979.
    CrossRef  |  Direct Link  |  

  61. Alexopoulos, A.A., G. Aivalakis, K.A. Akoumianakis and H.C. Passam, 2007. Effect of foliar applications of gibberellic acid or daminozide on plant growth, tuberisation, and carbohydrate accumulation in tubers grown from true potato seed. J. Hortic. Sci. Biotechnol., 82: 535-540.

  62. Alexopoulos, A.A., A. Kondylis and H.C. Passam, 2007. Fruit yield and quality of watermelon in relation to grafting. J. Food Agric. Environ., 5: 178-179.
    Direct Link  |  

  63. Savvas, D., H.C. Passam, C. Olympios, E. Nasi, E. Moustaka, N. Mantzos and P. Barouchas, 2006. Effects of ammonium nitrogen on lettuce grown on pumice in a closed hydroponic system. HortScience, 41: 1667-1673.
    Direct Link  |  

  64. Petropoulos, S.A., C.A. Akoumianakis and H.C. Passam, 2006. Evaluation of turnip-rooted parsley (Petroselinum crispum ssp. tuberosum) for root and foliage production under a warm, Mediterranean climate. Sci. Hortic., 109: 282-287.
    CrossRef  |  Direct Link  |  

  65. Karapanos, I.C., K. Akoumianakis, C.M. Olympios and H.C. Passam, 2006. The influence of gelling agent purity and ion additions on in vitro tomato pollen germinability and pollen tube growth on semi-solid substrates. Plant Cell Tissue Org. Cult., 87: 181-190.
    CrossRef  |  Direct Link  |  

  66. Karapanos, I.C., C. Fasseas, C.M. Olympios and H.C. Passam, 2006. Factors affecting the efficacy of agar-based substrates for the study of tomato pollen germination. J. Hortic. Sci. Biotechnol., 81: 631-638.
    CrossRef  |  Direct Link  |  

  67. Alexopoulos, A.A., K.A. Akoumianakis and H.C. Passam, 2006. The effect of the time and mode of application of gibberellic acid on the growth and yield of potato plants derived from true potato seed. J. Sci. Food Agric., 86: 2189-2195.
    CrossRef  |  Direct Link  |  

  68. Alexopoulos, A.A., K.A. Akoumianakis and H.C. Passam, 2006. Effect of plant growth regulators on the tuberisation and physiological age of potato (Solanum tuberosum L.) tubers grown from true potato seed. Can. J. Plant Sci., 86: 1217-1225.
    CrossRef  |  Direct Link  |  

  69. Tsakonas, A., V. Stergiou, M. Polissiou, K. Akoumianakis and H.C. Passam, 2005. Kenaf (Hibiscus cannabinus L.) based substrates for the production of compact plants. Ind. Crops Prod., 21: 223-227.
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  70. Petropoulos, S.A., C.A. Akoumianakis and H.C. Passam, 2005. Effect of sowing date and cultivar on yield and quality of turnip-rooted parsley (Petroselinum crispum ssp. tuberosum). J. Food Agric. Environ., 3: 205-207.
    Direct Link  |  

  71. Passam, H.C., M. Stylianou and A. Kotsiras, 2005. Performance of eggplant grafted on tomato and eggplant rootstocks. Eur. J. Hortic. Sci., 70: 130-134.
    Direct Link  |  

  72. Kotsiras, A., C.M. Olympios and H.C. Passam, 2005. Effects of nitrogen form and concentration on yield and quality of cucumbers grown on rockwool during spring and winter in southern greece. J. Plant Nutr., 28: 2027-2035.

  73. Khah, E.M., K.A. Akoumianakis and H.C. Passam, 2005. Greenhouse seed production of two dwarf green bean cultivars in relation to the duration of irrigation. HortScience, 40: 443-445.
    CrossRef  |  Direct Link  |  

  74. Khah, E.M. and H.C. Passam, 2005. Osmoconditioning of lettuce seed to alleviate adverse effects of salinity on germination and early growth. Seed Sci. Technol., 33: 227-230.
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  75. Petropoulos, S.A., D. Daferera, C.A. Akoumianakis, H.C. Passam and M.G. Polissiou, 2004. The effect of sowing date and growth stage on the essential oil composition of three types of parsley (Petroselinum crispum). J. Sci. Food Agric., 84: 1606-1610.
    CrossRef  |  Direct Link  |  

  76. Koumpouros, Y., B.D. Mahaman, M. Maliappis, H.C. Passam, A.B. Sideridis and V. Zorkadis, 2004. Image processing for distance diagnosis in pest management. Comput. Electron. Agric., 44: 121-131.
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  77. Kapotis, G., H.C. Passam, K. Akoumianakis and C.M. Olympios, 2004. Storage of tomatoes in low oxygen atmospheres inhibits ethylene action and polygalacturonase activity. Russ. J. Plant Physiol., 51: 112-115.
    CrossRef  |  Direct Link  |  

  78. Passam, H.C., 2003. Use of grafting makes comeback. Fruit Veg. Technol., 3: 7-9.

  79. Mahaman, B.D., H.C. Passam, A.B. Sideridis and C.P. Yialouris, 2003. DIARES-IPM: A diagnostic advisory rule-based expert system for integrated pest management in Solanaceous crop systems. Agric. Syst., 76: 1119-1135.
    CrossRef  |  Direct Link  |  

  80. Alexopoulos, A.A., K.A. Akoumianakis and H.C. Passam, 2003. The storage of globe artichokes under modified atmospheres. J. Food Agric. Environ., 1: 130-133.

  81. Tocatlidou, A., H.C. Passam, A.B. Sideridis and C.P. Yialouris, 2002. Reasoning under uncertainty for plant disease diagnosis. Expert Syst., 19: 46-52.
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  82. Passam, H.C., K. Rekoumi and A.E. Nikolopoulou, 2002. Quality aspects of greek fruit and vegetables destined for local consumption and export. Acta Hortic., 579: 577-583.
    CrossRef  |  Direct Link  |  

  83. Kotsiras, A., C.M. Olympios, J. Drosopoulos and H.C. Passam, 2002. Effects of nitrogen form and concentration on the distribution of ions within cucumber fruits. Sci. Hort., 95: 175-183.
    CrossRef  |  Direct Link  |  

  84. Khah, E.M., A. Antonopoulos and H.C. Passam, 2002. Floral behaviour and fruit set in four cultivars of aubergine. Acta Hortic., 579: 259-264.
    CrossRef  |  Direct Link  |  

  85. Costopoulou, C.I. and H.C. Passam, 2002. The potential for electronic marketing of Greek perishable produce. Acta Hortic., 579: 665-669.
    CrossRef  |  Direct Link  |  

  86. Costopoulou, C.I. and H.C. Passam, 2002. Internet trading of tropical horticultural produce: A case study for exports from Kenya to Greece. Trop. Sci., 42: 35-39.

  87. Saplaouras, K., H.C. Passam and I. Karapanos, 2001. Seed production of lettuce under plastic in a warm climate in relation to sowing time and gibberellic acid application. Plant Varieties Seeds, 14: 15-23.
    Direct Link  |  

  88. Passam, H.C., C. Baltas, A. Boyiatzoglou and E.M. Khah, 2001. Flower morphology and number of aubergine (Solanum melongena L.) in relation to fruit load and auxin application. Sci. Hortic., 89: 309-316.
    CrossRef  |  Direct Link  |  

  89. Passam, H.C., A.B. Sideridis, C.P. Yialouris and M.T. Maliappis, 2001. Improvement of vegetable quality and water and fertilizer utilization in low-tech greenhouses through a decision support management system. J. Veg. Crop Prod., 7: 69-82.
    CrossRef  |  Direct Link  |  

  90. Moustakas, N.K., K.A. Akoumianakis and H.C. Passam, 2001. Cadmium accumulation and its effect on yield of lettuce, radish and cucumber. Commun. Soil Sci. Plant Anal., 32: 1793-1802.
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  91. Costopoulou, C.I. and H.C. Passam, 2001. An architecture for wholesale service in Internet commerce of fresh fruit and vegetables. Agric. Econ., 47: 373-380.

  92. Akoumianakis, K., C.M. Olympios and H.C. Passam, 2000. Effect of “rindite” and bromoethane on germination, sprout emergence, number of sprouts and total yield of tubers of potato cv. Spunta. Adv. Hortic. Sci., 14: 33-35.
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  93. Passam, H.C., K. Akoumianakis and E.M. Khah, 1999. Long-term storage of aubergine seed following production under high ambient temperatures. Seed Sci. Technol., 27: 977-980.

  94. Passam, H.C., G. Apostolopoulos and K. Akoumianakis, 1999. Artichoke quality during storage at 2 and 10°C in relation to the presence of the flower stalk and enclosure in polyethylene. Adv. Hortic. Sci., 13: 165-167.
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  95. Passam, H.C., A.B. Sideridis and C.P. Yialouris, 1999. A decision support system for the irrigation and nutrition management of tomatoes cultivated in low-technology, plastic-covered greenhouses. HortTechnology, 9: 436-440.
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  96. Passam, H.C., A. Petrou and K. Akoumianakis, 1999. Testa (seed coat) retention by aubergine (Solanum melongena L.) seedlings during emergence in sand, peat and perlite. Plant Varieties Seeds, 12: 73-78.
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  97. Passam, H., 1999. The curing of yam (Dioscoreu spp.) tubers for improved storage. Cahiers Opt. Mediterr., 47: 57-62.
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  98. Passam, H.C., K. Akoumianakis and A. Saragiannidi, 1998. The effect of time of sowing on the production of okra (Hibiscus esculentus L.) seed in the Mediterranean region. Plant Varieties Seeds, 11: 145-150.

  99. Yialouris, C.P., H.C. Passam, A.B. Sideridis and C. Metin, 1997. VEGES-a multilingual expert system for the diagnosis of pests, diseases and nutritional disorders of six greenhouse vegetables. Comput. Electron. Agric., 19: 55-67.
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  100. Sideridis, A.B., C.P. Yialouris and H.C. Passam, 1997. High-tech software for the low-tech greenhouse industry in the Mediterranean basin. Petria, 7: 163-172.

  101. Passam, H.C., E. Lambropoulos and E.M. Khah, 1997. Pepper seed longevity following production under high ambient temperature. Seed Sci. Technol., 25: 177-185.

  102. Passam, H.C. and P. Polyzou, 1997. Improvement of okra seed germination by acid, osmoconditioning and hot water treatments. Plant Varieties Seeds, 10: 135-140.

  103. Passam, H.C. and A. Bolmatis, 1997. The influence of style length on the fruit set, fruit size and seed content of aubergines cultivated under high ambient temperature. Trop. Sci., 37: 221-227.

  104. Passam, H.C., C.M. Olympios and K. Akoumianakis, 1995. The influence of pre- and post-harvest application of seaweed extract on early production and storage of cucumber. Acta Hortic., 379: 229-236.
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  105. Passam, H.C., C.M. Olympios and K. Akoumianakis, 1995. Definition of the optimum sowing date for the cultivation of short-day onion cultivars in Greece. Allium Improvement Newslett., 5: 44-47.

  106. Passam, H.C., 1995. Induction, storage and germination of microtubers derived from single-node cuttings of mature yam plants. Trop. Sci., 35: 217-219.

  107. Passam, H.C. and I. Karagiannidis, 1994. The effect of a seaweed extract on the growth and yield of three onion cultivars. Allium Improvement Newslett., 4: 85-88.

  108. Passam, H.C. and D. Kakouriotis, 1994. The effects of osmoconditioning on the germination, emergence and early plant growth of cucumber under saline conditions. Scientia Horticulturae, 57: 233-240.
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  109. Khah, E.M. and H.C. Passam, 1994. Sensitivity of seed of cotton cv. Zeta-2 to damage during acid-delinting. Plant Varieties Seeds, 7: 51-57.

  110. Passam, H.C. and E.M. Khah, 1992. Flowering, fruit set and fruit and seed development in two cultivars of aubergine (Solanum melongena L.) grown under plastic cover. Sci. Hortic., 51: 179-185.
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  111. Khah, E.M. and H.C. Passam, 1992. Sodium hypochlorite concentration, temperature and seed age influence germination of sweet pepper. HortScience, 27: 821-823.
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  112. Khah, E.M. and E.C. Passam, 1992. Flowering, fruit set and development of the fruit and seed of sweet pepper (Capsicum annuum L.) cultivated under conditions of high ambient temperature. J. Hortic. Sci., 67: 251-258.
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  113. Thanos, C.A., K. Georghiou and H.C. Passam, 1989. Osmoconditioning and ageing of pepper seeds during storage. Ann. Bot., 63: 65-70.
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  114. Passam, H.C., P.I. Karavites, A.A. Papandreou, C.A. Thanos and K. Georghiou, 1989. Osmoconditioning of seeds in relation to growth and fruit yield of aubergine, pepper, cucumber and melon in unheated greenhouse cultivation. Sci. Hortic., 38: 207-216.
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  115. Georghiou, K., C.A. Thanos and H.C. Passam, 1987. Osmoconditioning as a means of counteracting the ageing of pepper seeds during high-temperature storage. Ann. Bot., 60: 279-285.
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  116. Ireland, C.R. and H.C. Passam, 1985. Effect of exogenous batatasin, batatasin analogues and gibberellins on the dormancy of stored yam tubers. Trop. Agric., 62: 41-46.

  117. Wickham, L.D., H.C. Passam and L.A. Wilson, 1984. Tuber development, storage and germination in yams (Dioscorea spp.) in response to pre-harvest application of plant growth regulators. J. Agric. Sci., 102: 437-442.
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  118. Wickham, L.D., H.C. Passam and L.A. Wilson, 1984. Dormancy responses to post-harvest application of growth regulators in Dioscorea species: I. Responses of bulbils, tubers and tuber pieces of three Dioscorea species. J. Agric. Sci., 102: 427-432.
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  119. Wickham, L.D., H.C. Passam and L.A. Wilson, 1984. Dormancy responses to post-harvest application of growth regulators in Dioscorea species. 2. Dormancy responses in ware tubers of D. alata and D. esculenta. J. Agric. Sci., 102: 433-436.
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  120. Ireland, C.R. and H.C. Passam, 1984. The level and distribution of phenolic plant growth inhibitors in yam tubers during dormancy. New Phytol., 97: 233-242.
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  121. Wickham, L.D., L.A. Wilson and H.C. Passam, 1982. The origin, development and germination of bulbils in two Dioscorea species. Ann. Bot., 50: 621-627.
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  122. Passam, H.C., L.D. Wickham and L.A. Wilson, 1982. The long-term storage of yam tubers (Dioscorea alata L.) with reference to early-season production. Trop. Sci., 24: 99-110.

  123. Passam, H.C., L.D. Wickham and L.A. Wilson, 1982. Comparative observations on the polarity of sprouting of bulbils of Dioscorea bulbifera L. and Dioscorea alata L. Ann. Bot., 49: 359-366.
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  124. Passam, H.C., L.D. Wickham and L.A. Wilson, 1982. A note on the relationship between maturity and dormancy in tubers of Dioscorea alata L. Trop. Sci., 24: 47-51.

  125. Passam, H.C., 1982. Storage of some local and introduced mango cultivars grown in Trinidad. Sci. Hortic., 16: 171-177.
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  126. Passam, H.C., 1982. GA dip slows yam decay. Int. Agric. Dev., 9: 10-11.

  127. Passam, H.C., 1982. Experiments on the storage of eddoes and tannias (Colocasia and Xanthosoma spp.) under tropical ambient conditions. Trop. Sci., 24: 39-46.

  128. Passam, H.C., 1982. Dormancy of Yams in Relation to Storage. In: Yams-Ignames, Miege, J. and S.N. Lyonga (Eds.). Clarendon Press, Oxford, UK., ISBN-13: 9780198545576, pp: 285-293.

  129. Passam, H.C. and G. Blunden, 1982. Experiments on the storage of limes at tropical ambient temperature. Trop. Agric., 59: 20-24.

  130. Wickham, L.D., L.A. Wilson and H.C. Passam, 1981. Tuber germination and early growth in four edible Dioscorea species. Ann. Bot., 47: 87-95.
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  131. Passam, H.C., D.S. Maharaj and S. Passam, 1981. A note on freezing as a method of storage of breadfruit slices. Trop. Sci., 23: 67-74.

  132. Blunden, G., E.M. Jones, H.C. Passam and E. Metcalf, 1979. Increases in chlorophyll retention times of limes after post-harvest immersion in N6-benzyladenine and gibberellic acid. Trop. Agric., 56: 311-319.

  133. Passam, H.C., S.J. Read and J.E. Rickard, 1978. The respiration of yam tubers and its contribution to storage losses. Trop. Agric., 55: 207-214.

  134. Passam, H.C. and M.C. Bird, 1978. The respiratory activity of honeydew melons during the climacteric. J. Exp. Bot., 29: 325-333.
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  135. Blunden, G., E.M. Jones and H.C. Passam, 1978. Effects of post-harvest treatment of fruit and vegetables with cytokinin-active seaweed extracts and kinetin solutions. Bot. Mar., 21: 237-240.
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  136. Passam, H.C., P.A. Hughes and S.J. Read, 1977. Wound repair in yam tubers: The effects of inhibitors of respiration and protein synthesis on repair physiology. New Phytol., 79: 593-603.
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  137. Passam, H.C., 1977. Sprouting and apical dominance of yam tubers. Trop. Sci., 19: 29-39.

  138. Passam, H.C. and R.A. Noon, 1977. Deterioration of yams and cassava during storage. Ann. Applied Biol., 85: 436-440.

  139. Passam, H.C. and C. Barrett, 1977. Invertase in yam (Dioscorea spp) tubers. J. Root Crops, 3: 1-3.

  140. Phillips, D.E. and H.C. Passam, 1976. A simple, inexpensive apparatus for the continuous measurement of respiration by oxygen uptake. Trop. Sci., 18: 125-133.

  141. Passam, H.C., S.J. Read and J.E. Rickard, 1976. Wound repair in yam tubers: The dependence of storage procedures on the nature of the wound and its repair. Trop. Sci., 18: 1-11.

  142. Passam, H.C., S.J. Read and J.E. Rickard, 1976. Wound repair in yam tubers: Physiological processes during repair. New Phytol., 77: 325-331.
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  143. Passam, H.C., 1976. Cyanide-insensitive respiration in root tubers of cassava (Manihot esculenta Crantz.). Plant Sci. Lett., 7: 211-218.
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  144. Passam, H.C., 1975. The effects of bongkrekic acid and atractyloside on adenine nucleotide translocation in plant mitochondria. Biochem. Soc. Trans., 3: 167-168.
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  145. Passam, H.C. and J.O.D. Coleman, 1975. The effects of atractyloside and bongkrekic acid on Jerusalem artichoke mitochondria in relation to adenine nucleotide translocation. J. Exp. Bot., 26: 536-543.
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  146. Mimbelaleyva, L., H.C. Passam, P.J.A. Reilly and A. Wallbridge, 1975. Quality problems of South-American honeydew melons imported into Britain. Trop. Sci., 17: 61-74.
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  147. Passam, H.C., 1974. The oxidative phosphorylation and ATPase activity of Arum spadix mitochondria in relation to heat generation. J. Exp. Bot., 25: 653-657.
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  148. Passam, H.C., J.H.M. Souverijn and A. Kemp Jr., 1973. Adenine nucleotide translocation in Jerusalem-artichoke mitochondria. Biochim. Biophys. Acta (BBA)-Bioenergetics, 305: 88-94.
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  149. Passam, H.C., J.A. Berden and E.C. Slater, 1973. The cytochrome b spectrum of plant mitochondria and its response to ATP and antimycin. Biochim. Biophys. Acta (BBA)-Bioenergetics, 325: 54-61.
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  150. Passam, H.C. and J.M. Palmer, 1973. The ATPase activity of Jerusalem-artichoke mitochondria and submitochondrial particles. Biochim. Biophys. Acta (BBA)-Bioenergetics, 305: 80-87.
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  151. Passam, H.C. and J.M. Palmer, 1972. Electron transport and oxidative phosphorylation in Arum spadix mitochondria. J. Exp. Bot., 23: 366-374.
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  152. Passam, H.C. and J.M. Palmer, 1971. The influence of seasonal variation on oxidative phosphorylation in sub-mitochondrial particles prepared from Jerusalem artichoke tubers. J. Exp. Bot., 22: 304-313.
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  153. Palmer, J.M. and H.C. Passam, 1971. The oxidation of exogenous reduced nicotinamide-adenine dinucleotide by plant mitochondria. Biochem. J., 122: 16P-17P.
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