| 摘要: |
| 本文通过对F2主要性状遗传进度、相关遗传进度、选择指数的估算分析,得出在有些组合中可对单株粒重进行直接选择,一些组合可用株高、抽穗期、百粒重、每穗粒数对单株粒重进行间接选择,其它产量组成因素以直接选择为佳。提出可用Y=-3.4923X1-11.7590X2＋65.3411X3＋0.8909X5(株高＋抽穗期＋百粒重＋每穗粒数)指数式进行组合评定和单株选择。 |
| 关键词: 小麦育种,数量遗传,遗传进度,育种方法 |
| DOI： |
| 分类号: |
| 基金项目: |
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| AN ANALYSIS OF GENETIC ADVANCES IN F2 PRINCIPAL CHARACTERS IN WINTER WHEAT |
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Yang Gaihe:
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| Abstract: |
| This paper analyses the genetic advances, relative genetic advances, selective indexes in F2 principal characters. The results indicate that the single plant cutput car be selected fro;n some hybridized combinations directly,some of which can be done by the plant height, heading period,100-grain weight and counting single grains per ear Direct selection of other factors for output formation is best. Therefore, evaluation of hybridized combinations and single plant selection can be done by y=-3. 4923x1-11.7500x2＋65.3411x3＋0.8909x5(plant height＋heading period＋100-grain weight＋counting grain per ear). |
| Key words: Wheat breeding, quantitative inheritance, genetic advance, breeding method |
