自从两系法杂交水稻应用到实际生产中以米,全国已育成一批粳、籼型光温敏核不育系,取得了可喜的成就。但由于水稻两用核不育系的选育还存在许多问题,如光温敏核不育系在育性敏感期内遇到强烈的低温,育性容易波动,使杂交种纯度降低等,所以,探讨和鉴定光温敏核不育水稻育性情况,在两系杂交水稻生产上有重要的意义和应用价值。在本文中,通过鉴定300多份光温敏不育系的不育性,选育出育性较稳定11个籼型温敏不育系和8个粳型光敏不育系。在杭州自然条件下利用AMMI(additive main effects and effects and multiplicantive
interaction)模型鉴定了不同核不育水稻对日长的敏感性;并观察研究了新选育的11个籼型温敏核不育系受台风影响,育性波动情况,以期为光温敏核不育水稻的实际生产提供理论依据。获得如下主要结论:
1.提出了利用自然日长鉴定光敏不育系的方法。通过将8个水稻光敏不育系育性敏感期日长分成6个梯度,温度分成11个梯度,并与正常花粉率育性资料匹配,应用AMMI(Additive Main effects and Multipl...
【英文摘要】
With the development of the two-line hybrid, there are many fine PTGMS (photo-thermo-sensitive genic male sterile) have been found. Some new developed combinations based on PTGMS have showed a great potential in developing hybrids.However, the fertility of PTGMS lines had been strongly influenced by the environmental conditions during rice growing seasons. PTGMS lines will change from sterile to fertile condition when it meets extremely low temperature during its fertility sensitive stage, and it leads to d...
| 
点击下列相关研究机构和相关文献作者，可以直接查到这些机构和作者被《中国知识资源总库》收录的其它文献，使您全面了解该机构和该作者的研究动态和历史。
