激素对不同发育阶段小麦旗叶光合速率调控研究

摘要/Abstract

摘要： 选择小麦旗叶叶绿素含量的相对稳定期、稳定期末期和速降期3个发育阶段,采用酶联免疫法测定旗叶中ABA/ZRs比值;将ABA、ZRs和二者的混合液引入3个发育阶段植株的蒸腾流,测定激素对不同发育阶段叶片光合速率的影响.结果表明,3个发育阶段植株旗叶中ABA/ZRs比值分别为4.20、41.83和14.40.ABA降低3个阶段叶片光合速率达到零值的时间,分别为49.5、39.1 和 38.0 min;ZRs处理3个发育阶段小麦旗叶的光合速率值降至试验开始零分钟时测得的光合速率值一半的时间,分别为65、49和31 min.小麦旗叶的前2个发育阶段为可调和可逆阶段,后1个阶段为不可调和不可逆阶段.

关键词: 激素, 小麦, 光合速率, 调控

Abstract: By the method of ELASA,this paper measured the ABA/ZRs ratio in wheat flag leaf at the relative steady phase (RSP),end steady phase (ESP) and sharply descending phase (SFP) of chlorophylls.The ABA,ZRs and their mixture were led to the transpiration current of plant to measure the changes of photosynthesis rate at these three phases.The results showed that the ABA/ZRs ratio in flag leaf was 4.20,41.83 and 14.40 at RSP,ESP and SFP,respectively.The time that the photosynthesis rate reduced by ABA to zero was 49.5,39.1 and 38.0 min,and that reduced by ZRs to half was 65,49 and 31min,respectively.The two preceding phases could be regulated,and the changes were reversible.

Key words: Hormone, Wheat, Photosynthesis rate, Regulation and control

中图分类号:

Q945.18

魏道智, 宁书菊, 林文雄. 激素对不同发育阶段小麦旗叶光合速率调控研究[J]. 应用生态学报, 2004, (11): 2083-2086.

WEI Daozhi, NING Shuju, LIN Wenxiong. Effect of hormones on regulating and controlling photosynthesis rate of wheat flag leaf at their different development phases[J]. Chinese Journal of Applied Ecology, 2004, (11): 2083-2086.

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