冷藏对石蒜鳞茎休眠生理及开花的影响  

Effects of Cold Storage on Dormancy Physiology and Flowering Regulation of Lycoris radiate

作　　者：王磊[1] 汤庚国[2] 刘彤[3] 

机构地区：[1]江苏农林职业技术学院,句容212400 [2]南京林业大学 [3]石河子大学

出　　处：《东北林业大学学报》2009年第12期51-53,共3页Journal of Northeast Forestry University

基　　金：国家林业局"948"引进项目(98-4-07)

摘　　要：为掌握冷藏对石蒜(Lycoris radiata)鳞茎休眠生理及开花的影响,研究了石蒜球根在6和9℃低温下分别冷藏4、7、9周后,鳞茎尖内的生理变化,并观察其开花时间。结果表明:在6℃冷藏4周花期推迟19d;9℃冷藏4周花期推迟12d;6、9℃条件下冷藏7和9周均未开花。在6℃冷藏4周条件下,蛋白质和核酸质量分数均保持着较低的水平;同时对内源激素质量摩尔浓度测定表明内源激素IAA极显著对花期具有影响作用,ABA、ZR也具有影响花期的作用,而内源激素GA3质量摩尔浓度变化对开花无显著影响。An experiment was conducted to study the physiological change and flowering time of Lycoris radiate bulbs after 4,7 and 9 weeks of storage at low temperatures of 6 degrees C and 9 degrees C in order to discuss the effects of cold storage on dormancy physiology and flowering regulation of L. radiate. Result showed that the flowering time postponed 19 days at 6 degrees C for 4 weeks, 12 days at 9 degrees C for 4 weeks, but there were no flowers to be seen at 6 degrees C and 9 degrees C for 7 and 9 weeks, respectively. The contents of protein and nucleic acid kept a low level at 6 degrees C for 4 weeks. Moreover, the determination of endogenous hormone content also showed that the flowering time was obviously affected by IAA content, and ABA and ZR also had certain effect on flowering time, while the effect of endogenesis GA3 was not significant.

关 键 词：冷藏 石蒜 内源激素 蛋白质 核酸 开花 

分 类 号：Q945[生物学—植物学]