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用变异系数法、变动指数法和回归分析法对1972年大豆新品种区域试验中三类区域(多雨区、少雨区和上两区合并)17个地点的17个品种,1978—1979年区域试验的三类区域共33个点次的7个品种的资料进行了统计分析。结果指出,不同品种在不同区域的产量稳定性有明显差异。三种方法的分析结果的比较表明:早熟、中熟和中晚熟品种间的稳产性强弱的顺序是一致的。晚熟品种的回归系数法估值比其它两种方法显著低。由于晚熟品种在大多数地点不能正常成熟产量低下,变异系数法与变动指数法较回归分析法更具有实际意义。三种分析结果间的相关分析表明,大多数情况下相关系数均迭极显著程度。当把晚熟品种删掉后,相关显著性进一步提高。有时虽然相关不显著,但各自的基因型分类结果也甚为符合。上述三种方法对品种稳定性的估算都是有效的,但变动指数法更简便易行。
By using the method of variation coefficient, variation index and regression analysis, 17 varieties in 17 locations of three kinds of regions (combination of rainy area, rainy area and upper two areas) in the regional experiment of new soybean variety in 1972 were studied. The regional experiment of 1978-1979 Three types of regional 33 point total of seven varieties of data were analyzed. The results indicated that the yield stability of different varieties in different regions have obvious differences. Comparison of the analytical results of the three methods showed that the order of the stability of middle and late maturing varieties was consistent among the precocious, middle-maturing and middle-late maturing varieties. The regression coefficient method of late-maturing varieties is significantly lower than the other two methods. Because late-maturing varieties can not mature normally in most places, the variation coefficient method and the change index method are more practical than the regression analysis method. Correlation analysis of the three analysis results showed that in most cases the correlation coefficients were very significant. When the late-maturing varieties deleted, the relevance of further improved. Sometimes, although the correlation is not significant, their respective genotyping results are also in good agreement. The above three methods are effective in estimating the stability of varieties, but the index of variation index is more simple and convenient.