| 摘要: |
| 对K、L、Sh、T型4类小麦雄性不育系杂种F1恢复度分析表明:①4类细胞质均存在不同程度的不良效应;②不育系易恢复性能为K>L≥Sh>T型;③K型不育系恢复度高的一个重要原因在于小穗中部小花结实性好;④4类不育系的恢复度均与穗粒数有重要相关关系;⑤4种细胞质类型对筛选高恢复度杂种F1具有各自不同的要求;⑥研究K、L、Sh型恢复度时,利用国际法表示恢复度较为合理。 |
| 关键词: 小麦，雄性不育，育性恢复，通径分析 |
| DOI： |
| 分类号:S512.103.51 |
| 基金项目:国家“八五”攻关项目 |
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| Fertility Restoration on Male Sterile Lines of Four Types of Wheat |
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| Abstract: |
| The analysis on the restoration degree of the F1 hybrid wheat by CMS
K,L,Sh or T were carried out in this study. The results are as follows: (1) Different
bad effects in hybrid wheat with K,L,Sh and T cytoplasm are found; (2)Their sequence
of easy restoration is: K>L≥Sh>T; (3) One important reason for the high degree
restoration of CMS K results from the high setting rate in the middle of spikelets; (4)
The restoration degree of the four-type sterile lines has a close correlation with grains
per spike. (5) Breeding objective of higher restorative degree in F1 varies depending on
individual cytoplasmic type. (6) The international method is more reasonable than the
domestic when the restoring degree of hybrid wheat with K,L or Sh cytoplasm is studied. |
| Key words: wheat,cytoplasmic male sterility,fertility restoration,path analysis |
