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《Jiangsu Journal of Agricultural Sciences》 2006-02
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Studies on Source and Sink of Rapeseed Ⅲ.Effect of Sink Change on Seed Weight in Rapeseed

HUI Fei-hu~(1,2),SHI Jian-fei~(1),SUN Jia-gang~(1),LENG Suo-hu~(1),TANG Yao~(1),ZUO Qing-song~(1)(1.Key Laboratory of Crop Cultivation and Physiology of Jiangsu Province,Yangzhou University,Yangzhou 225009,China;2.Yangzhou Academy of Agricultural Sciences,Yangzhou 225009,China)  
The trials were carried out to investigate the effect of sink change on seed weight through analyzing the relationship of seed volume,SNPA and SVPA etc.with seed weight under different planting density,pod length and podding position conditions.The main results were as follows: ① the seed weight on rachis,upper 2nd and 5th primary branch were positively correlated with their seed volume significantly;② seed volume,SNPA,SVPA and seed weight increased firstly and then decreased as the planting density increased,and path analysis indicated that planting density affected seed weight mainly through the change of seed volume;③ seed volume was positively correlated with pod length while SNPA and SVPA decreased by exponential function as pod length increased.The results from path analysis indicated that the direct effect of pod length on seed weight was less than the indirect effect through seed volume.
【Fund】: 扬州大学江苏省作物栽培生理重点实验室开放课题(K04006)
【CateGory Index】: S565.4
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