论文部分内容阅读
运用扫描电镜，对５个水稻亚种间杂交稻及其亲本成熟籽粒胚乳淀粉粒的形态、大小和排列等性状进行了观察比较。观察发现：１．籽粒充实度好的材料，其胚乳内的淀粉粒发育好，大多为多面体状的淀粉复粒，排列紧密以至粘挤在一起；充实度差的材料，其淀粉粒不整齐，存在大小明显不同的两种，形状大体均为椭球形，排列疏松，粒间隙大；充实度为中等的，则表现为背部类似充实好者，而腹部或中央部类似充实差者。２．双亲胚乳淀粉粒发育好，其杂种的胚乳淀粉粒发育一般也好；杂种胚乳淀粉粒发育属中间类型的，双亲中至少有一方淀粉粒发育不良；部分杂种组合籽粒的淀粉粒的形态与排列存在分离现象。
Scanning electron microscopy (SEM) was used to observe the morphology, size and arrangement of the endosperm starch grains of 5 rice subspecies hybrid rice and their mature kernels. Observations found: 1. Grain filling material is good, the starch grains in the endosperm develop well, mostly polyhedral starch complex grains arranged closely together even stick together; poor degree of enrichment material, the starch grains are not neat, there is a significant difference in size Two kinds, the shape is generally ellipsoid, arranged loose, large grain space; degree of fullness is moderate, then the performance of the back is similar to enrich the good, and the abdomen or central section of the full complement of poor. 2. The parental endosperm starch granules developed well, and the hybrid endosperm starch granules developed generally well. The hybrid endosperm starch granules were of intermediate type, and at least one of the parents had starch granules dysplasia. The morphology and arrangement of starch granules of some hybrid combinations Separation phenomenon.