北疆春大豆生长动态及干物质积累与分配

Growth Changing and Dry Matter Accumulation and Distributionin Spring Soybean Beijiang

通过对春大豆整个生育期内几个重要的生理指标的动态变化规律的研究表明 ,就不同品种而言 ,各个生理指标的峰值虽略有差异 ,但仍是有规律可循的 ,株高、LAR、NAR、叶绿素含量、叶面积指数分别主要出现在结荚期 (或鼓粒期 )、始花期、鼓粒盛期、鼓粒期和鼓粒盛期 ;这些峰值可与产量相结合用于品种选育。在物质积累与分配上 ,结荚至鼓粒盛期最多 ,而分配则是从结荚期开始 ,分配到荚中的干物质所占的比重逐渐升高 。

By studying the changing law of several important physiology indices of total growth stage in spring soybean,we found that the stage limit of every physiology indices is different, but still we can found a law according to different varieties. Plant height and LAR and NAR and chlorophyll content and leaf area index have each limits in pods stage (pod-filling stage) initial blooming stage and full pod-filling stage pod-filling stage and full pod-filling stage. When we are breeding a new variety we can concern these limits. About dry matter accumulation and distribution the highest amount is showed in pod stage to full pod-filling stage, but distribution starts at pod stage, with growing more and more dry matter is distributed to pods, this indicts the center of dry matter distribution is changing.