摘要
为了探究剑麻花芽分化与内源激素水平的关系。在对剑麻H.11648花芽分化进程进行观察的基础上,进行了花芽分化期剑麻花芽中的脱落酸(ABA)、生长素(IAA)、玉米素(ZT)和赤霉素(GA3)4种内源激素含量变化研究。结果表明,剑麻H.11648茎尖ABA、ZT的含量均在花芽分化初期达到高峰,而GA3的含量在花芽分化基本完成时达到高峰,IAA含量在花芽分化中期处于低谷,且内源激素出现高峰或低谷的时间与其花芽分化完成时间一致,表明测试激素均与花芽分化有密切关系。研究发现高水平的ABA、ZT、ABA/GA3、ABA/IAA、ZT/GA3和ZT/IAA及较低水平的GA3、IAA有利于剑麻的成花。
This paper was to study the effect of the endogenous hormones in sisal on the flower bud differentiation. Agave hybrid No. 11648 was used as material for studying the changes of the contents of abscisic acid （ABA）, indolylacetic acid （IAA）, zeatin （ZT） and gibberellin （GA3） during the flower bud differentiation. The results showed that the contents of ABA and ZT in the shoot tips of sisal No. 11648 peaked when flower bud differentiation was initiated, and the contents of GA3 peaked when flower bud differentiation was basically completed, but IAA decreased evidently when flower bud differentiation was going at the mid - stage. The time of the change of the endogenous hormones was coincidently with the time of the flower bud differentiation, which illustrated that the endogenous hormones were severely related with the flower bud differentiation. Low level of GA3 and IAA and high level of ABA, ZT, ABA/ GA3, ABA/IAA and ZT/GA3 in shoot tips were beneficial to the flower bud differentiation.
出处
《中国麻业科学》
2012年第6期255-259,共5页
Plant Fiber Sciences in China
基金
中央级公益性科研院所基本科研业务费(No.sscri 200715
No.sscri 200802
No.1251022011010)
国家麻类产业技术体系岗位专家基本研发费(CARS-19-E03)
关键词
剑麻
花芽分化
内源激素
sisal
flower bud differentiation
endogenous hormones
作者简介
作者简介：李俊峰（1980-），男，硕士，助理研究员，主要从事剑麻遗传育种研究。E—mail：317513292@qq．com.
通讯作者：周文剑（1965-），男，副研穷员，主要从事剑麻遗传育种研究。E—mail：zwenzhao@163．com.
