亚亚种间重穗型杂交稻灌浆分析  

GRAIN-FILLING OF HEAVY-EAR SUB-SUBSPECIFIC HYBRIDS OF RICE

作　　者：何光华[1] 谢戎[1] 杨正林[1] 左永树[1] 邵启明[2] 

机构地区：[1]四川省农业科学院水稻高粱研究所,泸州646100 [2]西南农业大学农学系,重庆630716

出　　处：《西南农业大学学报（自然科学版）》1997年第2期140-144,共5页Journal of Southwest Agricultural University

基　　金：四川省农业科学院"八五"院列项目资助

摘　　要：对亚亚种间重穗型杂交稻 K1 7A/ N45和珍汕 97A/ N45的灌浆特性研究表明 ,两个组合的上部籽粒灌浆启动迅速 ,积累干物质能力强、速度快、关键期短。生长中心可迅速转移到下部籽粒 ,达到中部籽粒同步发育进程。不表现明显的多次灌浆现象。灌浆能力与汕优 63相当 。Grain filling characteristics of the haevy ear sub subspecific hybrid combinations of rice K17A/N45 and Zhenshan 97A/N45 were studied in comparison with Shanyou 63. Grain filling of the strong grains (grains in the upper location of the ear) were characterized by a fast start, high capacity and rate of dry matter accumulation and short crucial period for grain filling. The growth centre was then found to be transferred rapidly from the strong grains downward so that a synchronic growth of the upper and middle grains was realized. No repeated grain filling was noticed. The grain filling capacity of the two combinations was comparable to that of Shanyou 63. The main difference in grain filling between the combinations and Shanyou 63 manifested itself in the strong grains.

关 键 词：水稻 灌浆 杂交水稻 

分 类 号：S511.01[农业科学—作物学]