宁夏水稻品种主要农艺性状分析

Analysis of Main Agronomic Characters of Rice in Ningxia

分别考查了宁夏引黄灌区27个水稻品种的10个主要农艺性状,对达到显著差异的7个性状进行主成分分析,并对影响单株粒重的6个性状进行通径分析。结果表明,7个主要农艺性状经主成分分析可归结为3个主成分因子,对产量影响较大的因素分别为粒数因子、粒重因子和长度因子。对影响单株粒重的6个性状经通径分析,对单株粒重贡献较大的因素依次为每穗实粒数、千粒重和穗长。表明在适宜的株高和穗长条件下,应适当增加穗粒数和提高千粒重。

The ten main agronomic characters of twenty-seven rice varieties was investigated in this experiment in yellow river irrigation areas of Ningxia. And seven main characters was showed notability difference was used to principal components analysis and six characters for influence of single plant grain weight was used to pathway analysis. The result showed that the seven main characters was divided in three main factors according to principal components analysis, the factor of influence relatively big to yield was number grain of panicle factor, grain weight factor and length factor, and according to pathway analysis, the factor of contribution relatively big to single plant grain weight was as follows： filled grains of per panicle, one thousand grain weight and the panicle length. Which suggested that the high yield varieties were be bred to increase the number grain of panicle and one thousand grain weight in properly basis of plant height and panicle length.