摘要
采用方差分析和相关分析等方法对籼粳交组合培矮64S/日本晴F2、F3及F6代分蘖数、有效分蘖数和株高等7个主要农艺性状进行了研究。结果表明,7个农艺性状在双亲之间均存在显著或极显著差异,亲本在不同年份和不同地点表现出较大差异,株高表现变异系数较大,分别为14.4%和22.8%。各性状在3个世代中除了F2分蘖率、F3齐穗期和F6株高,其余各性状均呈连续变异,分布频率大致接近正态分布,同时存在双向超亲分离现象。各性状不同世代相关系数有一定的变化,但不改变其方向。这些结果可以为水稻数量性状基因座分析提供有价值的信息,也可为水稻遗传改良提供理论依据;本文还对选用测序水稻品种为亲本构建群体进行农艺性状研究的意义进行了讨论。
The major traits - number of tillers, number of effective tillers, plant height, etc. - of the F2, F3 and F6 progenies derived from the rice subspecies cross Pei＇ai64s/Nipponbare underwent ANOVA and correlation analysis. Both parents significantly differed in traits, with great differences in phenotypic values at different locations and years. The phenotypic coefficients of variation for plant height varied greatly, from 14.4% to 22.8%. The frequency distribution of all traits, except for percentage of tillering for F2 progeny, days to heading for F3 and plant height for F6, was fairly normally distributed. Progeny also showed tremendous bidirectional segregation beyond parents for all traits. The correlations among all traits varied slightly, but the direction of variance was relatively stable. These results provide some meaningful information for mapping of quantitative trait loci and genetic improvement for rice breeding. The research implications of agronomic traits with sequenced rice varieties as parents are discussed.
出处
《植物学通报》
CSCD
北大核心
2008年第1期59-66,共8页
Chinese Bulletin of Botany
基金
863计划(No.2003AA212030)
天津市攻关项目(No.043123811)
