玉米雄穗分枝数分化发育基因研究进展

doi:10.11923/j.issn.2095-4050.cjas18060019

摘要/Abstract

摘要： 为了挖掘玉米雄穗分枝数分化发育过程关键基因优异等位变异、开展玉米雄穗设计育种。本文综述了玉米雄穗分枝数QTL定位研究进展，阐释了控制玉米雄穗分枝数分化发育关键基因功能及其调控网络。指出了已定位的能稳定遗传的玉米雄穗分枝数主效QTL较少，而且通过突变体克隆的玉米雄穗分枝数分化发育基因表现出极端表型，不能直接应用于玉米育种实践的问题。提出了通过构建玉米雄穗分枝数QTL近等基因系和根据雄穗分枝数分化发育关键基因特征在自然群体寻找优异等位变异的建议，有助于图位克隆玉米雄穗分枝数主效基因、挖掘玉米雄穗分枝数优异基因资源，从而进行玉米产量和株型相关性状的分子育种。

关键词: 太原, 太原, 短时强降水, 时空分布, 影响因素, 降水预报, 防灾减灾

Abstract: To discover allelic variation of the key genes involved in tassel branch number (TBN) development process and design maize tassel breeding, we summarized mapped-QTLs of TBN, and explained function and regulatory networks of key genes involved in TBN development process. The stable-inheritance major QTLs of TBN were less, and TBN genes derived from mutants showed extreme phenotype, therefore it limited the direct application in maize breeding. We offered proposals including near-isogenic line construction of TBN-QTL and searching excellent allele variations from natural population based on key characteristic of TBN genes, which would contribute to map- based cloning of TBN genes, exploring of excellent allele variations, and molecular breeding of maize yield and plant-type related traits.

中图分类号:

S513

代资举,王新涛,杨青,张富才,李保全. 玉米雄穗分枝数分化发育基因研究进展[J]. 农学学报, 2018, 8(10): 7-12.

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