应用灰色关联度综合评价冬性小黑麦品种区域试验

Comprehensive Evaluation on the Regional Test of Winter Tritieale Varieties by Grey Relational Degree

[目的]探讨用灰色关联度法综合评价小黑麦区试材料的可行性。[方法]运用灰色关联度对新疆2006~2007年参加冬性小黑麦区试的8个品种从多方面共13个性状进行分析。[结果]根据关联度计算结果,籽粒产量与各性状关系依次为：株高〉容重〉穗长〉每穗粒数〉最高茎数〉生育期〉千粒重〉基本苗数〉不育小穗数〉结实小穗数 与鲜草产量相关的性状关系依次为株高〉容重〉穗粒数〉穗长〉最高茎数〉生育期〉基本苗数〉千粒重〉不育小穗数〉结实小穗数 与小黑麦干草产量相关性状的性状关系依次为鲜草产量〉株高〉容重〉穗粒数〉穗长〉最高茎数〉生育期〉千粒重〉基本苗数〉不育小穗数〉结实小穗数。[结论]采用灰色关联度法综合评判小黑麦品种是客观可行的。

[ Objective ] The aim was to discuss the feasibility of comprehensively evaluating the tritieale region materials by using the grey relation degree. [ Method ] Eight winter tritieale varieties which attended Xinjiang tritieale region experiment from 2006 to 2007 were analyzed by using grey relation degree and they were analyzed on several aspects including 13 agronomic characters. [ Result] The counting results of relation degree showed the tested characters related to the grain yield in order was as follows ： plant height 〉 bulk density 〉 the length of spike 〉 each kernel number 〉 the highest number of stem 〉 growth period 〉 1 000 grain weight 〉 basic number of seedling 〉 sterile small spike 〉 solid small ears in the traits of trial; the characters related to the fresh grass yield in order was as follows： plant height 〉 bulk density 〉 per kernel number 〉 the length of spike 〉 maximum number of stems 〉 growing period 〉 basic number of seedling 〉 1 000 grain weight 〉 sterile small ears 〉 solid small ears; the characters related to the hay yield in order was as follows： fresh grass yield 〉 plant height 〉 bulk density 〉 per kernel number 〉 the length of spike 〉 maximum number of stems 〉 growth period 〉 1 000 grain weight 〉 basic number of seedling 〉 sterile small ears 〉 solid small ears. [ Conclusion ] It was impersonally feasible to comprehensively evaluate the tritieale variety by using the grey relation degree.