| Effect of pod shading on pod and seed matter accumulation at soybean seed formation stage |
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| DOI：10.7606/j.issn.1000-7601.2008.03.26 |
| Key Words: soybean pod shading relative photosynthesis service matter accumulation |
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| Abstract: |
| Heihe17 and other12 soybean cultivars were used as materials to study the relative photosynthesis service of pod to seed weight and effect of pod shading to pod and seed matter accumulation by whole plant pod shading．The results indicated that the pods of different genotype had differently relative photosynthesis service rate changing from0．6％ to 16．6％．For Longpin 90—055 and Shidou2 with low ratio value of leaf area and pod area the rate of pod relative photosynthesis service to seed weight is greater than that of W1and Ken18 with higher ratio value of leaf area and pod area．Different genotypes had various effects on ratio value of seed weight and pod husk weight under the pod shading condition and there were three sorts：decrease changelessness and increase with the sort of increase being the majority which indicated that pod shading restrained pod husk matter accumulation more significantly than seeds．Pod shading decreased sugar and revive sugar content of seeds and pod husks at ripe stage the decreasing range of seed was more obviously than pod husk while there were approximate range of starch content of seed and pod husk．Pod shading treatment decreased starch content of pod husk at ripe stage and the decreasing range was more obviously than sugar and revive sugar． |