水稻颖壳叶绿素含量与籽粒灌浆的关系

以4个类型水稻品种为例，对开花后水稻颖壳的叶绿素含量变化与籽粒灌浆的关系进行了分析。结果表明，开花当天强势粒的颖壳叶绿素含量高于势弱，但开花10d后强势粒颖壳叶绿素含量下降，弱势粒颖壳叶绿素含量下降慢，开花后颖壳叶绿素含量的变化与籽粒与籽粒尤其是弱势粒的灌浆之间存在着很密切的关系，强，弱势粒颖壳最大的叶绿素含量的差异与最终粒重差异之间存在着显著的相关性，在开花授粉后，套不透明袋能显著降低谷粒的千粒重，据此推测，水稻颖壳的叶绿素可能参与了光合作用并对最终粒重产生直接或间接的影响。

Relationship between Chlorophyll Content of Rice Glume and Grain Filling

Four types of rice varieties were employed as material to analyzechanges of chlorophyll content of rice glume and grain filling after flowering．It was indicated that：chlorophyll content of upper grain glume was higher than that of lower grain glume on the day of flowering，but 10 days after flowering，chlorophyll content of upper grain glume decreased more quickly than that of lower one；the changes of chloropyll content of glume after flowering connected closely with grain filling；the difference between maximum chlorophyll content of upper grain glume and lower grain glume had significantly positive correlation with the difference between upper grain weight and lower grain weight；after fertilization，bagging panicle with nontransparent bag could reduce the weight of grain，so it can be concluded that the chlorophyll of rice glume might have attended photosynthesis and have influenced the weight of grain at maturing directly or indirectly．