Abstract: Onion(Allium Cepa L.) bulbs were treated with five kinds of chemicals(hydrochloric acid,sodium hydroxide,maleic hydrazide,sorbic acid,ethlene) in three concentration respectively(by spraying at the time of two weeks before harvest and by dipping after harvest).The result showed that there were significant inhibiting effect on the onion bulbs germination rate at the time of 135 days after harvest by spraying with four kinds of chemicals.The germination rate by spraying with HCL 400mg/kg,NaOH 300mg/kg,MH1200mg/kg and Eth 200mg/kg was 20%,10%,14.08%,20% lower than of CK.The difference was significant or most significant.The inhibiting order was:Eth 200mg/kgHCL 1400mg/kgMH 1200mg/kgNaOH 300mg/kg.There were significant inhibiting effect on the onion bulbs germination rate at the time of 135 days after harvest by dipping with five kinds of chemicals.The germination rate by dipping with HCL 1800mg/kg,NaOH 200mg/kg,MH 1600mg/kg,SBA 1600mg/kg and Eth 200mg/kg was 15%,15%,15%,21.66%,18.33 lower than of ck.The difference was significant or most significant.The inhibiting order was SBA 1600mg/kg>Eth 200mg/kg>HCL 1800mg/kg>MH 1600mg/kg>NaOH 200mg/kg.

Key words: Chemical, Onion bulbs, Inhibiting, Germination

CLC Number: 

• S633.204