文献类型： 外文期刊

作者： Yan Hao ¹ ; Zhang Jing-yong ² ; Zhang Chun-bao ² ; Peng Bao ² ; Zhang Wei-long ² ; Wang Peng-nian ² ; Ding Xiao-yang ² ;

作者机构： 1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Soybean Mol Design Breeding, Changchun 130102, Jilin, Peoples R China

2.Jilin Acad Agr Sci, Natl Engn Res Ctr Soybean, Soybean Res Inst, Changchun 130033, Jilin, Peoples R China

3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

关键词： soybean; outcrossing rate; stem height; branch number; initial bloom

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2019 年 18 卷 9 期

页码：

收录情况： SCI

摘要： Outcrossing rate is an important determinant of cytoplasmic male sterile (CMS) breeding and hybrid seed production for heterosis in soybean. Parental lines with a high outcrossing rate were screened for backcross breeding to obtain the high outcrossing rate maintenance B-lines and sterile A-lines. Application in production practices will help to increase hybrid soybean production. In this study, JLCMS82B and JLCMS89B were selected as parents for the construction of outcrossing rate segregation populations, and the progeny-array approach (PAA) and glyphosate resistant gene markers were used to determine outcrossing rates. We found that: (1) The outcrossing rate between JLCMS82B and JLCMS89B was significantly different; (2) the outcrossing rate of the F-2 segregating populations was a quantitative trait, though whether an additive or epistatic effect exists required analysis with a triple test intersection analysis; (3) agronomic traits correlated with outcrossing rate; outcrossing rate was the highest with plant height of about 84 cm, lower number of plant branches, earlier flowering time, larger angle between the branches and the main stem, and with more divergent plant morphology. Correlation analysis between agronomic traits and outcrossing rate can effectively guide the screening of parents with a high outcrossing rate.