Journal of Jianghan University(Natural Science Edition) ›› 2016, Vol. 44 ›› Issue (4): 297-304.doi: 10.16389/j.cnki.cn42-1737/n.2016.04.002
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WANG Yanjie,HU Zhihui,GUO Rui,CHEN Chanyou
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Abstract: With removing leaves and pods at flourishing podding stage, we studied the flower abscission rate,podding rate and yield of cowpea,meanwhile,we measured the photosynthetic parameters,chlorophyll fluorescence parameters and concentration of chlorophyll,processing stepwise regression analysis. The results showed:at flourishing podding stage,the flower abscission rate of 1/2 leaf removing was the highest,and the other treatments were higher than that of the CK. More removing leaves,lower podding rate,otherwise,higher podding rate;yields from high to low were control > 1/3 leaf removing > 1/4 leaf removing > 1/2 leaf removing. At flourishing podding stage,removed leaves and pods at the same time,podding rates from high to low were 1/4 leaf removing and 1/4 pod removing >1/4 leaf removing and 1/3 pod removing > 1/3 leaf removing and 1/4 pod removing > control > 1/3 leaf removing and 1/3 pod removing. The yields from high to low were 1/4 leaf removing and 1/4 podremoving > control > 1/3 leaf removing and 1/4 pod removing >1/4 leaf removing and 1/3 pod removing > 1/3 leaf removing and 1/3 pod removing. Stepwise regression showed:Fv/Fm could monitor abscission rate with equation y1 =97. 77 - 58. 21x1 . Fv/Fm and PRI could monitor podding rate with equation y2 =4. 06+68. 03x1 +197. 74x2 .Chlorophyll,abscission rate and podding rate could monitor yield with equation y3 =4 268. 13+253. 52x3 -48.10x4 -5. 50x5 .
Key words: cowpea, removal of leaves and pods, yield, PRI, Fv/Fm, chlorophyll
CLC Number:
S643.4
WANG Yanjie,HU Zhihui,GUO Rui,CHEN Chanyou. Effects of Removing Leaves and Pods on Flowers Abscission Rate,Podding Rate and Yield of Cowpea[J]. Journal of Jianghan University(Natural Science Edition), 2016, 44(4): 297-304.
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URL: https://qks.jhun.edu.cn/jhdx_zk/EN/10.16389/j.cnki.cn42-1737/n.2016.04.002
https://qks.jhun.edu.cn/jhdx_zk/EN/Y2016/V44/I4/297