| Effect of light enrichment and shading during reproductive stage on dry matter distribution yield and quality of soybean |
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| DOI：10.7606/j.issn.1000-7601.2009.02.18 |
| Key Words: soybean light enrichment shade dry matter accumulation protein oil |
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| Abstract: |
| Light intensity intercepted by soybean canopy during the reproductive period is an important environmental factor determining soybean growth and yield．Responses of dry matter distribution yield and quality of three soybean genotypes differing in protein and oil content to light enrichment and shading were investigated． The results showed that more dry matter was distributed to sink under whole plant light enriched conditions while more dry matter was distributed to source under shading．Light enrichment increased seed yield pod number and seed number per plant from 27．7％ to71．7％ 33．3％ to 71．1％ and 35．5％ to 85．7％ respectively． In contrast shade decreased seed yield pod number and seed number per plant from 34．4％ to 49．7％ 43．0 to 47．7％ and 33．4％ to 52．6％ respectively．Light enrichment increased protein content and decreased oil content in seed however shade decreased protein content but increased oil content in seed respectively． Differences existed among cultivars． |