利用灰色关联度分析云南田麦新品系产量和产量构成因素

Grey Correlation Degree Used to Analyze Yield and Yield Component Factors of Irrigated New Wheat Line of Yunnan Province

利用灰色关联度分析方法,对云南省2009-2011年度田麦区域试验参试新品系的产量与产量构成因素进行分析,以明确云南田麦产量与产量构成因素之间的关系。结果表明,云南田麦产量与产量构成因素关联度大小顺序依次为:基本苗>穗粒数>株高>生育期>千粒重>最高分蘖>有效穗。在育种过程中,应重点对穗粒数、株高、生育期的选择,但不应忽略千粒重、最高分蘖、有效穗的选择,栽培上适当增加播种量,适时灌水施肥,保证基本苗、增加结实率。

The grey correlation degree was applied to reveal the relationship between yield and yield component factors of new wheat lines which were the Yunnan irrigated wheat regional trial materials. The result showed that the values of correlation degree between yield and yield component factors were sequenced as follows： basic seedlings〉 grain number per spike〉 plant height 〉growth period〉 1000 grains weight 〉most tillering 〉effective spike. In the course of breeding,the selection of grain number per spike,plant height,growth period should be paid attention to. But the selection of 1000 grains weight,most tillering,and effective spike should not be ignored. In the course of cultivation,the seeding rate should be appropriately added,timely irrigation and fertilization should be done to ensure enough basic seedlings and increase seed setting rate.