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园艺学报 ›› 2025, Vol. 52 ›› Issue (5): 1351-1363.doi: 10.16420/j.issn.0513-353x.2025-0116

• 遗传育种·种质资源·分子生物学 • 上一篇    下一篇

萝卜NWB-CMS育性恢复基因的遗传分析及初步定位

王庆彪1, 王艳萍1, 吴翔宇1, 陈宁杰1, 池婷1, 化定珠1, 葛艾伶1, 郭宇1, 魏蕾2,*(), 张丽1,*()   

  1. 1 北京市农林科学院蔬菜研究所,蔬菜生物育种全国重点实验室,华北地区园艺作物生物学与种质创制重点实验室,蔬菜种质改良北京市重点实验室,北京 100097
    2 北京市农林科学院数据科学与农业经济研究所,北京 100097
  • 收稿日期:2025-02-12 修回日期:2025-05-12 出版日期:2025-05-25 发布日期:2025-05-21
  • 通讯作者:
    *E-mail:
  • 基金资助:
    国家自然科学基金项目(32172576); 北京市农林科学院科技创新能力建设专项(KJCX20230126); 北京市农林科学院科技创新能力建设专项(KJCX20210420); 北京市农林科学院蔬菜研究所改革与发展项目(KYCX202302)

Genetic Analysis and Preliminary Mapping of the Fertility Restoration Gene for NWB-CMS in Radish(Raphanus sativus

WANG Qingbiao1, WANG Yanping1, WU Xiangyu1, CHEN Ningjie1, CHI Ting1, HUA Dingzhu1, GE Ailing1, GUO Yu1, WEI Lei2,*(), ZHANG Li1,*()   

  1. 1 Beijing Vegetable Research Center,Beijing Academy of Agriculture and Forestry Sciences,State Key Laboratory of Vegetable Biobreeding,Key Laboratory of Biology and Genetics Improvement of Horticultural Crops(North China),Beijing Key Laboratory of Vegetable Germplasms Improvement,Beijing 100097,China
    2 Institute of Data Science and Agricultural Economics,Beijing Academy of Agricultural and Forestry Sciences,Beijing 100097,China
  • Received:2025-02-12 Revised:2025-05-12 Published:2025-05-25 Online:2025-05-21

摘要:

萝卜(Raphanus sativus L.)NWB细胞质雄性不育NWB-CMS是一种不同于Ogura-CMS的不育源,目前已经广泛应用于萝卜杂交育种。以10份东亚大长萝卜(R. sativus var. hortensis L.)和6份欧洲小萝卜(R. sativus var. sativus L.)为父本,对NWB-CMS进行遗传测试,解析NWB-CMS育性恢复的遗传规律,并在此基础上对育性恢复基因进行初步定位。结果表明,欧洲小萝卜普遍能够恢复NWB-CMS的育性,且不同品种包含的育性恢复基因数量不同,至少存在3个育性恢复基因。其中恢复系“KP”的育性恢复受两对显性上位性主基因加微效基因控制。利用混合群体分离分析,将育性恢复基因定位在Chr1:32.5 ~ 33.7 Mb(Rfn1.1)、Chr 9:12.2 ~ 13.3 Mb(Rfn9.1)和Chr4:16.7 ~ 18.6 Mb(Rfn4.1)、31.9 ~ 33.1 Mb(Rfn4.2)、34.3 ~ 37.9 Mb(Rfn4.3)范围内。对Rfn4位点进一步定位和分析发现,3个定位区间之间可能存在染色体大片段重复和倒位等结构变异。针对该位点开发的Rf-118等分子标记可用于雄性不育系的辅助选育和辅助追踪Rfn4位点,便于筛选和定位其他育性恢复基因位点。

关键词: 萝卜, NWB细胞质雄性不育, 育性恢复, 基因定位

Abstract:

NWB cytoplasmic male sterility(NWB-CMS)in radish(Raphanus sativus L.)represents a novel sterility source distinct from Ogura-CMS and has been widely utilized in hybrid breeding. This study investigated the genetic model underlying fertility restoration of NWB-CMS through extensive genetic testing using ten East Asia big long radish(R. sativus var. hortensis L.)and six European small radish(R.sativus var. sativus L.)and preliminary mapping of restorer fertility genes. Results revealed that fertility-restoring materials predominantly originated from the European small radish subspecies,with varying numbers of restorer genes across different nuclear backgrounds. At least three independent restorer loci were identified for NWB-CMS. In the F2 segregating population derived from the cross between sterile line“YB-A” and restorer line“KP”,fertility restoration followed a genetic model controlled by one major gene and multiple minor-effect genes. Bulk segregant analysis localized the restorer genes to chromosomal regions Chr1:32.5-33.7 Mb(Rfn1.1),Chr9:12.2-13.3 Mb(Rfn9.1),and Chr4:16.7-18.6 Mb(Rfn4.1),31.9-33.1 Mb(Rfn4.2),and 34.3-37.9 Mb(Rfn4.3). Further analysis of the Rfn4 locus suggested potential large-segment duplications and chromosomal inversions among the three targeted genomic intervals. Molecular markers(Rf-118 etc.)specific to the Rfn4 locus were developed to marker-assisted selection of male-sterile lines and to facilitate precise tracking of the Rfn4 locus,which aid in the screening and localization of additional fertility-restoring loci.

Key words: radish, NWB cytoplasmic male sterility, restorer of fertility, gene mapping