摘要
按４×７ＮＣⅡ分析法研究了杂交早稻穗充实度的遗传特性。结果表明，杂交早稻穗充实度的遗传以加性效应为主，且主要由恢复系决定，遗传力较低。穗充实度是影响产量的重要性状之一。提高穗充实度，应在一定的穗粒数、千粒重的基础上，通过提高结实率的途径来实现。
Genetic characteristic of the filled panicle ratio was studied in 28 F 1 hybrids by using 4×7 NCⅡ method. The results indicated that the filled panicle ratio of early-indica hybrid rice was mainly controlled by additive effects, and governed by restorer lines. Its genetic ability was lower. The filled panicle ratio was one of the most important character affecting grain yields. Good filled panicle ratio was realized by increasing setting ratio of seed with suitable grains per panicle and 1000-grain weight.
出处
《中国农学通报》
CSCD
1998年第5期30-32,共3页
Chinese Agricultural Science Bulletin
关键词
穗充实度
杂交
早稻
配合力
水稻
遗传特性
Filled panicle ratio Early-Indica hybrid rice Combining ability Correlation and path analysis
