| 摘要: |
| 1981和1982年,对600余个小麦单交组合进行了 F_1杂种优势的分析。结果表明:1.单株生产力,单株穗数、每穗粒数和千粒重普遍存在着十分明显的各类优势。其中以单株生产力的优势最强;2.在构成单株生产力的三因素中,单株穗数的杂种优势、超亲和超标优势最高,具千粒重优势的组合所占比例最大,主穗粒数的各类优势相对较低;3.单株生产力及其构成三因素的各类优势在不同组合间有很大差异,尤以单株穗数的优势变化幅度最大,这些性状的表现又多与其双亲平均值存在着极显著的正相关。 |
| 关键词: 小麦杂种优势 产量性状 优势分析 超亲优势 超标优势 强优势组合 千粒重 组合数 三因素 单株生产力 |
| DOI： |
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| 基金项目: |
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| HETEROSIS OF THE CHARACTERISTICS RELATED TO YIELD IN WINTER WHEAT |
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| Abstract: |
| The heterosis of several yielding characteristics of single crosses of more than 600 of winter wheat were studied in 1981 and 1982.The following results were obtained: 1)Obvious heterosis for grain yield per plant,number of spikes per plant, number of kernels per spike and 1000-kernel weight were observed generally and the most significant one was that for grain yield per plant. 2)The heterosis for the grain yield per plant was the result of complent- ary and coordinating developing of separate heterosis fo... |
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