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不同温度处理对''绿世界''卡特兰花芽分化及内源激素动态变化的影响

标题: 不同温度处理对''绿世界''卡特兰花芽分化及内源激素动态变化的影响
英文标题: The Effect of Different Temperature Treatments on Dynamic Changes of Endogenous Hormones and Flower-bud Differentiation of 'Green World' Cattleya
作者: 郑宝强,王雁,彭镇华,李莉
出版时间: 2010-01-01
机构: 河北农业大学
关键词: 卡特兰,花芽分化,温度,新叶,内源激素
英文关键词: Cattleya,flower-bud differentiation,temperature,new leaves,endogenous hormones
刊名: 林业科学研究
英文刊名: Forest Research
ISSN: 1001-1498
卷号: 006
基金: ^A引进国际先进农业科学技术计划(“948”计划)^B2006-4-C07,2005-4-37^D1
页码: 833-838
分类号: S682.31
摘要: 运用酶联免疫法,测定了卡特兰在花芽分化期经3种不同温度处理其新叶内源激素的动态变化,结果表明:(1)25℃/20℃处理能显著促进花芽分化,30℃/25℃处理花芽能正常分化,35℃/30℃处理抑制花芽分化;(2)25℃/20℃、30℃/25℃处理的新生叶片中赤霉素(GA3)、玉米素(ZR)、脱落酸(ABA)含量增加,吲哚乙酸(IAA)含量减少;35℃/30℃处理抑制新生叶片中GA3、ZR、ABA含量,促进IAA含量,而较低的GA3、ZR、ABA含量和较高水平的IAA含量不利于花芽分化;(3)35℃/30℃处理使GA3/IAA、GA3/ZR的比值处于一个较为稳定的状态,而这种状态不利于花芽分化.保持较低的IAA/ZR与IAA/ABA水平,有利花芽分化的继续进行.
英文摘要: The changes of endogenous hormones in the new leaves of Cattleya during the flower-bud differentiation phase with 3 temperature treatments were determined by ELISA.The results indicated that:(1) The flower-bud differentiation was significantly accelerated under the treatment of 25 ℃/20 ℃,which was normal under treatment of 30 ℃/25 ℃ and inhibited under treatment of 35 ℃/30 ℃;(2) The contents of GA3,ZR,and ABA were promoted while IAA was inhibited under the treatments of 25 ℃/20 ℃ and 30 ℃/25 ℃.It was opposi...