WANG Yanjie,HU Zhihui,GUO Rui,et al.Effects of Removing Leaves and Pods on Cowpea and Its Fluorescence Indexes[J].Northern Horticulture,2016,40(23):15-19.[doi:10.11937/bfyy.201623004]
结荚期摘除叶荚对豇豆及其光谱荧光参数的影响
- Title:
- Effects of Removing Leaves and Pods on Cowpea and Its Fluorescence Indexes
- Keywords:
- cowpea; source-sink relationship; spectrum; fluorescence; chlorophyll
- 文献标志码:
- A
- 摘要:
- 以豇豆为试材，采用在豇豆生殖生长时期即结荚期摘除部分叶荚的方法，分析了结荚期摘除叶荚后豇豆植株的落花率、成荚率、产量、叶绿素含量以及荧光光谱参数的变化情况。结果表明：初荚期摘叶1/4、摘叶1/3、摘叶1/2植株的落花率均升高，摘荚1/4、摘荚1/3植株的落花率均低于对照。盛荚期摘叶1/4、摘荚1/4、摘荚1/3植株的落花率均低于对照，而摘叶1/3、摘叶1/2的植株落花率高于对照。其中，盛荚期摘叶1/2的豇豆植株落花率最高。在豇豆结荚期摘叶摘荚处理后，植株的成荚率、产量都低于对照。此外，最大光化学效率（Fv/Fm）、光化学反射指数（PRI）与叶绿素含量呈正相关，且R2达到080以上。Fv/Fm、PRI、叶绿素含量、落花率与产量的相关性不强，表明还有其它因素对豇豆产量的高低有决定性作用。
- Abstract:
- Cowpea was used as material，removing leaves and pods at the reproductive growth period，investigating change of abscission rate，podding rate，yield，chlorophyll content，spectrum and fluorescence indexes after treatment.The results showed that 1/4 leaves removing，1/3 leaves removing，1/2 leaves removing at the early podding stage of cowpea increased the flower abscission rate.But 1/4 pods removing and 1/3 pods removing reduced the flower abscission rate compared with control;1/4 leaves removing,1/4 pods removing and 1/3 pods removing at flourishing podding stage of cowpea，the flower abscission rate was lower than control，however，the flower abscission rate of 1/3 leaves removing and 1/2 leaves removing was the higher than control.The flower abscission rate of 1/2 leaves removing at the flourishing podding stage was the highest.The podding rate and yield after removing leaves and pods were lower than control after removing leaves and pods at podding period.Besides，Fv/Fm and PRI were in positive correlation with chlorophyll content，and R2 reached above 080.The correlation among Fv/Fm,PRI,chlorophyll content,flower abscission rate and yield was not strong，indicating that there were other critical factors affecting the yield of cowpea.
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备注/Memo
第一作者简介：汪艳杰(1983-)，女，河北保定人，博士研究生，实验师，现主要从事植物生理生化实验教学与科研工作。E-mail：yanjiebaoding@163.com.责任作者：胡志辉（1973-），男，湖北武汉人，本科，高级实验师，现主要从事植物生理生化的实验教学与科研工作。Email：huzhihui@jhun.edu.cn.基金项目：武汉市科技计划资助项目（201250499145-12）；湖北省豆类（蔬菜）植物工程技术研究中心开放基金资助项目（2012-03）。