摘要
以20份春小麦为试验材料,对农艺性状和单株产量进行相关性分析、回归分析和通径分析。结果表明,各农艺性状与单株产量的相关程度依次为:生物产量(0.91)>穗粒质量(0.49)>千粒质量(0.41)>穗粒数(0.25)>每穗小穗数(0.11)和每穗有效小穗数(0.11);主要农艺性状对单株产量的决定系数依次为:生物产量(0.980 4)、每穗有效小穗数(0.070 5)、穗粒质量(0.038 92)、千粒质量(0.025 79),表明农艺性状之间具有明显的制约关系。多元回归方程为:y=40.22+0.52x1-3.11x3+0.45x5-0.37x6,决定系数为0.906 6,相关指数为0.770 7。
The correlation regression and path analysis were used for the main agronomic characteristics and yield per plant of 20 spring wheat. The result displayed that the order of the correlation between agronomic characteristics and yield per plant were biological production（0.91 ）, spike grain weight （0.49）, thousand-grain weight （0.41）, number of grain （0.25） and number per spike spikelets（0. 11 ） and spikelets effectively（0.11 ）; determination coefficient of main agronomic characteristics to yield per plant were in order： the biological production （0.980 4）, the effective number of spikelets of each ear （0.070 5 ）, grain （0.038 92） and thousand-grain weight （0.025 79）, and which had an obvious constraint relations. Multiple regression equation was y = 40.22 ＋ 0.52x1 - 3.11x3 ＋ 0.45x5 - 0.37x6 and the coefficient of determination was 0.906 6, correlation index was 0.770 7.
出处
《山西农业科学》
2013年第5期407-411,共5页
Journal of Shanxi Agricultural Sciences
基金
山西省科技攻关项目(20100311001-6)
CGIAR挑战计划项目(GCP)(G7010.02.01-7)
山西农业大学科技创新基金项目(201225)
关键词
春小麦
农艺性状
单株产量
相关及通径分析
spring wheat
agronomic character
yield per plant
correlation and path analysis
