| 摘要: |
| 应用灰色关联度分析研究了31个国内外优良苜蓿种质资源的生产特性。结果表明：众多性状中茎粗对产量的贡献最大，其次为抗病能力、株高、分枝数。评价筛选出北疆苜蓿综合性状最好、生产性能优异，其次为侵略者、巨人201、牧歌401。同时此方法可以明确资源筛选中的侧重点和资源对育种工作的价值大小，避免以前工作中的盲目性。 |
| 关键词: 灰色关联度分析 综合评价 苜蓿 种质资源 综合评价 |
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| 基金项目:农业部“948”项目(2001-372);教育部重点项目(重点01167);农业部农业结构调整重大技术研究专项“西北旱区优质高产抗逆紫花苜蓿品种的筛选及其配套栽培技术研究”;科技部农业科技成果转化奖金项目"西北旱区农田高效微集水种植技术示范与开发";陕西省科技厅攻关项目(2001K01-G12-04) |
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| Relational grade analysis of grey theory and evaluation of characteristics of alfalafa germplasm resources |
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| Abstract: |
| Relational grade analysis of grey system was used to study the productive power of thirty-one alfalfa varieties in this paper.The results showed that stem diameter had the highest effect on herbage yield,resistance power of disease,plant height and branch number were secondary.Relational grade analysis of grey system was used to evaluate characters of alfalfa varieties,Beijiang Alfalfa had good complex character and superiority in relative herbage yield potential.Aggressor,Ameristand 201 and Amerigraze 401 were secondary.This method helped to highlight the key links in resource screening and the relative value of the studied materials to breeding work,and avoid randomness frequently met in the past work. |
| Key words: grey relational grade analysis alfalfa germplasm resources complex evaluation |
