INFLUENCE OF CHILLING AND INHIBITOR TREATMENTS ON SPROUTING OF ONION (ALLIUM CEPA L)

摘要

The effect of chilling (4 and 10°C) with irradiation (0.15 kGy and 0.30 kGy), Maleic Hydrazide (MH) (2.24 kg.ha{sup}(-1) and 5 kg.ha{sup}(-1)) and Carbamate Isopropyl. N-Phenyl (CIP) (1 g.t{sup}(-1) and 2g.t{sup}(-1)) on sprouting and rotting of onions during storage was studied. As previously demonstrated, cold temperature (4°C ) was more effective to control sprouting and rotting (respectively less than 10 and 6% after 5 months of storage), whereas 10°C seems more favourable to sprouting which exceeds 10% after the same period of storage. Chemical treatments were effective at 20°C where sprouting is comparable to control bulbs at 10°C (average of 40%), when irradiation remains the well demonstrated method to control sprouting. Nevertheless, rotting was variable and randomly distributed. At 10 and 20°C, rotting were similar because these temperatures favour the development of microorganisms.