1.莆田市农业科学研究所;2.福建农林大学农学院教育部作物遗传与综合利用重点实验室
国家自然科学基金面上项目(32372061);福建省科技计划项目-农业引导性(2021N0039);福建省科技计划项目—星火项目(2023S0013);福建省自然科学基金面上项目(2024J01132124);莆田市科技计划项目—技术开发与应用(2023NJJ002)
1.Putian Institute of Agricultural Sciences,Putian,;2.Fujian;3.Key Laboratory of Ministry of Education for Genetics,Breeding and Multiple Utilization of Crops,College of Agriculture,Fujian Agriculture and Forestry University,Fuzhou,;4.Putian Institute of Agricultural Sciences;5.Key Laboratory of Ministry of Education for Genetics,Breeding and Multiple Utilization of Crops,College of Agriculture,Fujian Agriculture and Forestry University;6.Key Laboratory of Ministry of Education for Genetics,Breeding and Multiple Utilization of Crops,College of Agriculture,Fujian Agriculture and Forestry University,Fuzhou
National natural science foundation of China (32372061);Fujian Provincial Science and Technology Program Project - Agricultural Guidance (2021N0039);Fujian Provincial Science and Technology Program Project - Spark Initiative ( 2023S0013);Natural science foundation of Fujian province (2024J01132124);Putian Municipal Science and Technology Program Project - Technology Development and Application (2023NJJ002)
本研究选用2003~2022年通过福建省审定的22份鲜食大豆品种,基于26个表型性状和43对SSR分子标记进行遗传多样性分析及分子指纹图谱构建。结果表明,22份鲜食大豆7个质量性状存在16种变异类型,平均多样性指数H"为0.494,19个数量性状变异系数变幅为3.44~50.6%,平均H"为1.9340,表明整体具有丰富的表型遗传多样性;43对SSR分子标记共检测到204个位点,平均多态性比率为88.72%,多态信息含量(PIC)变幅为0~0.3729,平均为0.2089,其中Satt514引物的PIC值最高(0.3729),等位基因数(Na)和有效等位基因数(Ne)平均值分别为1.8103和1.4374,平均Nei’s基因多样性指数H"为0.2623,平均Shannon"s多态性信息指数I为0.4016;22个品种间的遗传相似系数为0.4923~1.0000,平均为0.7073,其中沪选23-9和毛豆389遗传相似数最大,兴化豆618和闽豆10号间遗传相似系数最小;聚类分析表明,22份鲜食大豆基于表型性状和分子标记均被划分为3类,闽豆1号基于两种方法均被单独划分为1类,表明闽豆1号不管在表型性状还是遗传背景上都与其他品种差异较大,适合用作杂交亲本。综合考虑在染色体上分布均匀、带型清晰、多态性丰富等原则,筛选8对引物Satt197、Satt268、Satt373、Satt005、Satt431、Satt334、Satt191和Satt380,首次建构22份福建省鲜食大豆审定品种分子指纹图谱,利用这该引物组合可以区分除毛豆3号、沪选23-9和毛豆389以外的19份鲜食大豆品种。研究结果为福建省鲜食大豆种质资源的高效利用和新品种选育提供了科学依据,有利于对已审定品种的区分与保护。
In this study, genetic diversity analysis and the construction of a molecular fingerprinting map were performed for 22 vegetable soybean varieties approved in Fujian Province from 2003 to 2022, basing on 26 phenotypic traits and 43 pairs of SSR molecular markers. The results revealed there exhibited 16 types of variations in the seven qualitative traits among the 22 vegetable soybean varieties, with an average diversity index (H") of 0.494. The variation coefficients of the sixteen quantitative traits ranged from 3.44% to 50.6%, with an average H" of 1.9340, indicating rich phenotypic genetic diversity. A total of 204 loci were detected with 43 pairs of SSR molecular markers, exhibiting an average polymorphism rate of 88.72%. The Polymorphism Information Content (PIC) varied from 0 to 0.3729, with an average of 0.2089. The Satt514 maker demonstrated the highest PIC value of 0.3729. The average number of alleles (Na) and effective number of alleles (Ne) were 1.8103 and 1.4374, respectively. The average Nei"s gene diversity index (H") was 0.2623, and the average Shannon"s polymorphism information index (I) was 0.4016. The genetic similarity coefficient among the 22 varieties ranged from 0.4923 to 1.0000, with an average of 0.7073. The highest genetic similarity coefficient was observed between Huxuan 23-9 and Maodou 389 at 1, whereas the lowest coefficient was found between Xinghuadou 618 and Mindou No.10 at 0.4923. Cluster analysis showed that the 22 vegetable soybean cultivars were classified into three groups based on phenotypic characters and molecular markers. Mindou No.1 was classified into a separate group using both methods, indicating that it would have significant differences from other cultivars in both phenotypic traits and genetic background, making it suitable as a parental linefor hybridization. Considering the principles of uniform chromosomal distribution, distinct band patterns, and rich polymorphism, eight SSR makers (Satt197, Satt268, Satt373, Satt005, Satt431, Satt334, Satt191, and Satt380) were selected to construct the molecular fingerprint map of the 22 vegetable soybean varieties approved in Fujian Province. With these primer combination, 19 out of the 22 varieties could be distinguished, except for Maodou No.3, Huxuan 23-9, and Maodou 389. The findings would provide a scientific foundation for the efficient utilization of vegetable soybean germplasm resources and breeding in Fujian Province. This would also contribute to the differentiation and preservation of approved varieties.