水稻群体整齐度品种间差异与相关的研究  

Difference and Correlation of Uniformity in Rice Population Among Varities

作　　者：徐正进[1] 黄瑞冬[1] 李洪建 

机构地区：[1]沈阳农业大学农学院农业部作物生理与遗传改良重点开放实验室,沈阳110161 [2]辽宁省种子管理局,沈阳110034

出　　处：《沈阳农业大学学报》2006年第2期137-140,共4页Journal of Shenyang Agricultural University

基　　金：国家自然科学基金项目(30370866);教育部博士点专项科研基金项目(20050157001)

摘　　要：以辽宁省12个水稻品种(品系或组合)为试材,以变异系数为指标分析整齐度品种间差异及相关性进行分析。结果表明:经济性状本身存在显著或极显著的品种间差异,但是除成熟率外整齐度的品种间差异均未达到显著水平;每穴穗数、生物产量和经济系数与经济产量呈显著或极显著的正相关,而每穴穗数整齐度与经济产量呈显著的负相关;除千粒重外经济性状整齐度与本身平均值均为负相关,其中每穴穗数、成熟率和经济系数达到显著或极显著水平;相邻穴间经济性状的相关系数大多为负值,但均未达到显著水平。Twelve Japonica rice varieties and hybrids were studied for some economic traits and their uniformity grades in paddy fields. The results showed that there were significant differences at 0. 05 or 0. 01 level of confidence in the economic traits between rice varieties or hybrids. No significant differences were observed for the uniformity grades of the traits between varieties except maturity grade. Panicle numbers, biological yields （ Ybio ） and harvest indexes were positively correlated with economic yields （ Yeco）, while the uniformity grades of panicle numbers were negatively correlated with economic yields. The uniformity grades of all tested economic traits except 1000 - kernel weight had significantly negative correlation with the average values of the traits, especially for panicle numbers, maturity grades and harvest indexes. The correlation of the economic traits between the neighboring hills showed negative in most cases, but not as high as the significant levels.

关 键 词：水稻 经济性状 整齐度 自动调节 

分 类 号：S334.5[农业科学—作物遗传育种] S511.22[农业科学—农艺学]