【摘要】 本研究结果表明,晚稻6个性状遗传率大小的顺序是:穗长>小区产量>空粒率>结实率>千粒重>有效穗数。小区有效穗数对小区产量的影响较大,结实率对小区产量影响次之,千粒重对小区产量影响较小。结实率与千粒重成正相关,结实率与小区有效穗数、千粒重与小区有效穗数成负相关,三种的相关系数均达到很显著的水平。更多还原

【Abstract】 The present studies indicated that the heritability of 6 characters of late rice in sequence was as follows: The length of ear>plot yield>empty gr- ain rate>seed-setting rate>1000-grain weight>the number of effective ea- rs.The effect of the number of effective ears on plot yield was the mo- st important,the effect of seed setting rate on plot yield was secondary, and the effect of 1000-grain weight on plot yield was the least.Therela- tionship between seed-setting rate and 1000-grain weight was positive,and the relationships between seed setting rate and the number of plot effective ears,1000-grain weight and the number of plot effective ears were negative. The above mentioned 3 relationships reached verysignificant degree.更多还原