作　　者： ; ; ; ;

机构地区： 广东省农业科学院

出　　处： 《华南农业大学学报》 2003年第3期9-12,共4页

摘　　要： 选用直链淀粉含量(质量分数)不同等级的籼稻、粳稻、糯稻为材料,应用糙米直链淀粉单粒和总淀粉测定等方法研究水稻直链淀粉的形成积累.结果表明:随着籽粒发育,直链淀粉的积累是一个缓慢增长的动态过程,其速度低于支链淀粉和总淀粉;花后3～12d是直链淀粉、支链淀粉和总淀粉的快速增长期;支链淀粉先于总淀粉,总淀粉先于直链淀粉达最大含量;高直链淀粉含量的品种灌浆早期直链淀粉积累速率较低直链淀粉含量的品种高;季节对直链淀粉、支链淀粉、总淀粉的形成积累有一定的影响. The formation and accumulation of rice amylose content were studied. The results showed that the accumulation of amylose content was a slowlyincreasing dynamic process and its speed was slower than amylopection and total starch. The fast growing period of amylose, amylopection and total starch was the flowering 3-12 days. Amylopection was the first to reach the max content, then total content, amylose content was the last. During earlier period of milking, the accumulation rate of high amylose content species was higher than that of low amylose content species. The formation and accumulation of amylose content, amylopection content and total content were effected by season.

关 键 词： 水稻 直链淀粉 形成积累 动态分析 籽粒发育 支链淀粉

领　　域： [农业科学]