| 摘要: |
| 利用６个Ｔ型不育系及其保持系和５个恢复系配制３０个Ｔ质杂种和３０个相应的Ａ质杂种，另外选用４个Ｋ型不育系与２个Ｋ型恢复系配置８个Ｋ质杂种和８个相应的Ａ质杂种，研究杂种Ｆ１和杂种Ｆ２品质性状的杂种优势。研究结果表明：Ｔ质、Ｋ质及Ａ质杂种Ｆ１和Ｆ２的籽粒胚乳蛋白质含量、干、湿面筋含量均表现较强的杂种优势，杂种优势变异范围大，多数组合呈正向优势且具有较高的超亲优势，与前人的结论不一致，说明利用杂种优势提 |
| 关键词: 杂种小麦 胚乳品质性状 杂种优势 小麦 |
| DOI： |
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| Heterosis of Grain Quality Characters of Hybrid Wheat |
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| Abstract: |
| 30 hybrids with T. timopheevi cytoplasm and 30 hybrids with T. aestivum cyto-plasm were obtained from crossing 6 T-type male sterile lines and their B-lines with 5 T-type restoring lines. Meanwhile 8 hybrids with Aekotschyri cytoplasm and 8 hybrids with T. aestivum cytoplasm were obtained similarly with 4 K-type male sterile lines and 2 K-type restoring lines. The heterosis of grain quality characters of their F1 and F2 generation were studied. The results showed that the heterosis of grain protein content,dry and wet gluten content in F1 and F2 generation hybrids with T. timopheevi- or Ae. kotschyri- or T.aestivum cytoplasm were significant,and their variation ranges were also bigger. Most of these crosses presented positive heterosis over both parents. These results were different from previous studies, thus suggesting the possibility of increasing grain protein content,dry and wet gluten content of hybrid wheat by means of heterosis. However,the heterosis of Zeleny sedimentation values of F1 and F2 hybrids were mainly negative,suggesting that it is difficult to increase Zeleny sedimentation value and bread baking quality through hybrid wheat. Even though, to some extent certain F1 and F2 hybrids of some crosses still possessed positive heterosis for Zeleny sedimentation value, thus it is also possible to im-prove sedirnentation value by selecting suitable parents and crosses. |
| Key words: hybrid wheat,quaitly characters,heterosis |
