不同水稻群体产量性状、质量性状与产量的相关分析

选取30个不同熟期的水稻品种为试验材料,分别测定各品种的有效穗数、穗粒数、结实率、千粒重、叶面积指数、总干物质生产量、粒叶比、单茎茎鞘重和株高,采用相关分析方法,研究不同水稻群体产量构成性状、群体质量性状间及其与产量的关系。结果表明,针对不同水稻群体,其千粒重、穗数、每穗粒数、结实率与水稻产量的相关关系并不完全一致,以结实率表现最明显;水稻群体质量性状与产量的相关关系在不同群体中也表现不一致,以粒叶比与产量的相关关系变化最明显。因此,在生产实践中,针对不同群体,明确不同产量性状和群体质量性状在产量形成中的作用,应抓住重点性状并协调其与产量的相互影响和制约作用,以获得水稻最高产量。

Correlation analysis among yield traits, quality traits and yield of different rice populations

Thirty rice varieties were used in this experiment,and the effective panicle number,grains per panicle,seed setting rate,1000-grain weight,leaf area index,dry matter accumulation,ratio of grains to leaf,weight per stem-sheath and plant height were determined and their relationships to yield were analyzed by path analysis.The results indicated that as to different rice populations,the correlations between 1000-grain weight,panicle number,grains per panicle,seed setting rate and yield of rice were inconsistent,especially the seed setting rate.Moreover,the correlations between rice population quality traits and yield were also inconsistent for different rice populations,and the correlations between ratio of grain to leaf and yield changed significantly.Therefore,in production practice,according to different rice populations,the function of yield traits and population quality traits in the yield formation should be determined, and the interaction and restricted effect of key trait and yield should be coordinated to get the highest grain yield.