【作者】 任国艳；

【导师】 云兴福；

【作者基本信息】 内蒙古农业大学 ， 蔬菜学， 2002， 硕士

【摘要】 分别用三种浓度的盐酸、氢氧化钠、马来酰肼、山梨酸、水杨酸和乙烯利对洋葱鳞茎进行不同的处理（收获前两周叶部喷施、收获后浸根），结果表明：收获前两周经化学药剂叶部喷施后90天时，用盐酸1400ppm处理者，鳞茎发芽率比对照降低20%；用氢氧化钠450ppm处理者，鳞茎发芽率比对照降低10%；用马来酰肼1600ppm处理者，鳞茎发芽率比对照降低14.08%；用水杨酸1000ppm处理者，鳞茎发芽率比对照降低7.65%；用乙烯利200ppm处理者，鳞茎发芽率比对照降低20%；差异均达显著或极显著水平。其抑制效果顺序为：乙烯利200ppm>盐酸1400ppm>马来酰肼1600ppm>氢氧化钠450ppm>水杨酸1000ppm。鳞茎收获后经化学药剂浸根处理后90天时，用盐酸2100ppm处理者，鳞茎发芽率比对照降低15%；用氢氧化钠300ppm处理者，鳞茎发芽率比对照降低15%；用马来酰肼2000ppm处理者，鳞茎发芽率比对照降低15%；用山梨酸2000ppm处理者，鳞茎发芽率比对照降低21.66%；用水杨酸处理者，鳞茎发芽率比对照降低15%；用乙烯利200ppm处理者，鳞茎发芽率比对照降低18.33%。差异均达显著或极显著水平。其抑制效果顺序为：山梨酸2000ppm>乙烯利200ppm>盐酸2100ppm>马来酰肼2000ppm>氢氧化钠300ppm>水杨酸800ppm。进一步对洋葱鳞茎内的可溶性糖含量、总淀粉酶活性、IAA氧化酶活性及可溶性蛋白质含量进行测定表明：可溶性糖含量，总淀粉酶活性与洋葱鳞茎发芽率呈正相关性；IAA氧化酶活性与洋葱鳞茎发芽率呈负相关性；可溶性蛋白质与洋葱鳞茎发芽率无相关性。更多还原

【Abstract】 Onion bulbs were treated with six kinds of chemicals (hydrochloric acid,sodium hydroxide, maleic hydrazide, sorbic acid, salicylic acid, ethylene)in three concentration respectively , at the time of 2 weeks in front harvest and after harvest by spraying and dipping .The results showed that there were significant inhibiting effect on the onion bulbs germination rate by spraying with five kinds of chemicals .The germination rate by spraying with HCl1400ppm,NaOH450ppm,MH1600ppm, SA1000ppm and Eth200ppm was 20%,10%,14.08%,7.65%,20% lower than that of CK respectively. The difference was significant or most significant. The inhibiting order was Eth200ppm>HCl1400ppm>MH1600ppm>NaOH450ppm>SA1000ppm. There were significant inhibiting effect on the onion bulbs germination rate by dipping with six kinds of chemicals . The germination rate by dipping with HCl2100ppm,NaOH300ppm,MH2000ppm,SBA2000ppm,SA800ppm and Eth200ppm was 15%,15%,15%,21.66%,15%,18.33% lower than that of CK .The difference was significant or most significant. The inhibiting order was SBA2000ppm>ETH200ppm>HCl2100ppm>MH2000ppm>NaOH300ppm>SA800ppm. The measure of four physiological-biochemical indexes of treated onion bulbs showed that there were positive interrelationships between soluble sugar content, total amylase activity and germination rate of onion bulbs ; there was negative interrelationship between IAA oxidase activity and germination rate of onion bulbs; there was not interrelationship between soluble protein content and germination rate of onion bulbs.更多还原