高产早籼稻产量构成因素初析  

PRELIMINARY ANALYSIS OF THE YIELD COMPONENTS FOR EARLY INDICA RICE VARIETIES

作　　者：张旭[1] 黄农荣[1] 黄秋妹[1] 刘彦卓[1] 邱润恒 梁祖杨 

机构地区：[1]广东省农业科学院水稻研究所,广州510640

出　　处：《热带亚热带植物学报》1999年第S1期23-29,共7页Journal of Tropical and Subtropical Botany

摘　　要：1998年早季在广州研究了3个两系法杂交水稻组合和2个常规稻品种的产量构成因素,初步认为:两系法杂交稻新组合培矮64s/E32的产量最高,它单穗湿重和穗长亦最大,分别达5.42g和24.7cm;而常规稻品种粤香占亩有效穗数最高和谷/秆比值最大,分别达23.3万穗/亩和1.53。如果把这些性状有机地组合起来后再加上粤杂122的优质特性,这种结构模式将为华南地区水稻超高产或超级稻育种,展示了一种美好的前景。The yield components of 3 two-line rice hybrids and 2 inbred varieties were studied at Guangzhou in the early cropping season of 1998. The results showed that the two-line rice hybrid Peiai 64s/E32 gave highest yield, the heaviest individual fresh panicle weight and longest panicle length reached 5.42 g and 24.7 cm, respectively. However, the inbred rice variety Yuexiangzhan had both greatest number of productive tillers and grain/straw ratio, being up to 3.495 million panicles per hm2 and 1.53 of grain/straw, respectively. If these traits mentioned above and fine kcrnal quality of Yueza 122 could be integrated to form a new plant type, it would exhibit an excellent prospects in breeding for getting super high yield in South China rice cropping regions.

关 键 词：高产 籼稻 产量构成因素 

分 类 号：S511.21[农业科学—作物学]