Deciphering the genetic architecture of anther culturability in rice using segregation distortion approach

文献类型： 外文期刊

第一作者： Dai, Yuting

作者： Dai, Yuting;Hu, Qiyan;Ye, Junhua;Tu, Rongjian;Xie, Kaizhen;Qiu, Yue;Cheng, Can;Zhou, Jihua;Niu, Fuan;Sun, Bin;Zhang, Anpeng;Cao, Liming;Chu, Huangwei;Dai, Yuting;Zeng, Yanhua

作者机构：

期刊名称：CROP SCIENCE （ 影响因子：2.3； 五年影响因子：2.5 ）

ISSN： 0011-183X

年卷期： 2024 年 64 卷 2 期

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收录情况： SCI

摘要： Anther culture is a promising technique used in rice (Oryza sativa L.) breeding, although the genetic mechanisms associated with anther culturability remain elusive. In the process of in vitro anther culture, favorable alleles for anther culture are preferentially transmitted to doubled haploid (DH) populations, resulting in biased segregation of DH populations. Therefore, the segregation distortion (SD) method is an ideal approach for mapping the genetic loci controlling anther culturability. Performing a SD analysis using a genetic map consisting of 666 single nucleotide polymorphism markers, we identified five potential loci (logarithm of odds [LOD] > 3.5) that may be associated with anther culturability, including SDL2 and SDL3, which are overrepresented in japonica alleles, and SDL7, SDL9, and SDL11, which are overrepresented in indica alleles. In addition, nine pairs of epistatic interactions (EPIs) that contribute significantly (p < 0.05) to SD in the DH population were identified. Among them, the interaction between SDL2 and SDL3 is particularly noteworthy. These findings suggest that anther culturability in rice is governed by complex genetic mechanisms involving multiple nuclear genes and EPIs. This study provides insights into the genetic control underlying anther culturability in rice and lays the foundation for future research aimed at identifying causal genes associated with anther culturability.

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