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。
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 fourtype 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.
出处
《西北农业大学学报》
CSCD
北大核心
1998年第1期1-4,共4页
Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)
基金
国家"八五"攻关项目
关键词
小麦
雄性不育
育性恢复
性能
双列杂交
wheat,cytoplasmic male sterility,fertility restoration,path analysis
