水稻粒型基因克隆研究进展及育种应用展望

doi:10.16819/j.1001-7216.2020.9135

摘要/Abstract

摘要：

水稻的育种目标包括高产和优质等。粒型是指籽粒的三维结构,是决定水稻产量的重要因素之一,也是影响稻米品质的重要性状。目前已经克隆了超过60个与水稻粒型相关的基因,但应用于育种的粒型基因尚无完整统计。本文综述了已克隆的水稻粒型基因特别是数量性状基因座的研究进展,归纳总结了可应用于水稻高产及优质分子育种的重要粒型基因的功能标记,介绍了粒型基因的育种应用现状,并对前景作了展望,以期为水稻育种家提供可直接利用的分子育种信息。

关键词: 水稻, 粒型, 基因, 育种

Abstract:

The breeding objectives of rice include high yield and good quality. Grain size is the three-dimensional structure ofseeds, which is one of the key traits determining grain yield and quality in rice. To date, more than 60 genes associated with grain size have been cloned, but the application of grain size genes in rice breeding has not been summarized. This review covers the current advances which can deepen our understanding, such as the key genes for grain size, genetic mechanism behindthis trait, breeding application of cloned genes, functional markers for molecular breeding and prospects for future study, which will provide information of molecular breeding for rice breeders.

Key words: rice (Oryza sativa L.), grain size, gene, breeding

中图分类号:

S511.032

康艺维, 陈玉宇, 张迎信. 水稻粒型基因克隆研究进展及育种应用展望[J]. 中国水稻科学, 2020, 34(6): 479-490.

Yiwei KANG, Yuyu CHEN, Yingxin ZHANG. Research Progress and Breeding Prospects of Grain Size Associated Genes in Rice[J]. Chinese Journal OF Rice Science, 2020, 34(6): 479-490.

图/表 3

图1 已克隆水稻粒型相关基因在12条染色体上的分布红色为已克隆的粒型QTL。

Fig.1. Distribution of cloned genes for grain size on rice chromosomes. Cloned QTLs are highlighted in red.

表1 已克隆水稻粒型QTL及育种应用

Table 1 Identified QTL for grain size and their application in breeding.

表1 续

Table 1 Continued

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