不同粳稻品种分蘖成穗特性及产量构成因子比较

Comparison of Tiller-panicle Turnover Rate Characteristics and Yield Components of Different Japonica Rice Varieties

研究了不同粳稻品种分蘖成穗特性及产量构成因子表现,并对湖北省中粳选育提出见解。结果表明,不同的水稻品种间产量差异显著或极显著。产量构成因子中,不同类型的水稻品种间有效穗数差异显著或极显著,常规稻品种的有效穗数大于杂交稻品种的有效穗数;不同品种间的每穗总粒数呈显著或极显著差异,杂交稻品种的每穗总粒数明显高于常规稻品种;不同类型的水稻品种间结实率差异显著或极显著,常规稻品种结实率高于杂交稻品种;不同的水稻品种间千粒重差异显著或极显著,但两种类型的水稻品种间规律不明显。不同品种间的成穗率呈极显著差异,常规稻品种的成穗率明显高于杂交稻品种。

The characteristics of tiller-panicle rate and yield components of different japonica rice varieties were studied.The results showed that the yield differences between different rice varieties were significant or extremely significant.Among the yield components,there were significant or extremely significant differences in the number of effective ears among different rice varieties,and the number of effective ears of conventional rice varieties was higher than that of hybrid rice varieties.The total grain number per ear of hybrid rice was significantly higher than that of conventional rice.The seed setting rate of different rice varieties was significant or extremely significant,and the seed setting rate of conventional rice varieties was higher than that of hybrid rice varieties.The differences of 1 000-grain weight among different rice varieties were significant or extremely significant,but the regularity between conventional rice varieties and hybrid rice varieties was not obvious.The tillerpanicle rate of conventional rice was higher than that of hybrid rice.