Genetic Diversity in Oilseed and Vegetable Mustard (Brassica juncea L.) Accessions Revealed by Nuclear and Mitochondrial Molecular Markers

被引:5
作者
Zhang, Dongsuo [1 ]
Yu, Haibo [1 ]
Gao, Lianliang [1 ]
Wang, Jing [1 ]
Dong, Hui [1 ]
Guo, Yuan [1 ]
Hu, Shengwu [1 ]
机构
[1] Northwest A&F Univ, Coll Agron, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Peoples R China
来源
AGRONOMY-BASEL | 2023年 / 13卷 / 03期
基金
中国国家自然科学基金;
关键词
Brassica juncea L; genetic variation; simple sequence repeat; sequence related amplified polymorphism; intron-exon splice junction markers; InDel; SNP; a modified multiplex PCR; CYTOPLASMIC MALE-STERILITY; POPULATION-STRUCTURE; POLYPHYLETIC ORIGIN; CHINESE; RAPA; GENOME; IDENTIFICATION; EXPRESSION; SEQUENCE; SSR;
D O I
10.3390/agronomy13030919
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Genetic diversity analysis is a fundamental work for effective management and utilization of plant germplasm. Brassica juncea is an economically important crop, including both oilseed and vegetable types. In the present study, a total of 99 accessions of Brassicaceae family, including 84 mustard (50 oilseed and 34 vegetable types) in China and 15 other Brassicaceae accessions were evaluated for their genetic diversity using nuclear and mitochondrial molecular markers. All accessions were evaluated using 18 simple sequence repeats, 20 sequence related amplified polymorphisms, and 7 intron-exon splice junction primers, and in total, 232 polymorphic fragments were obtained. The unweighted pair-group method with arithmetic mean cluster analysis indicated that all accessions could be divided into three major clusters, with cluster I including all 50 oilseed mustard, cluster II including 34 vegetable mustard, and cluster III containing 15 other Brassicaceae accessions. The results of principal component analysis and population structure analysis were in accordance with the cluster result. Molecular variance analysis revealed that the genetic variation was 34.07% among populations and 65.93% within Brassica species, which indicates existence of considerable genetic variation among oilseed and vegetable B. juncea species. Based on an InDel and a SNP locus reported in B. juncea mitochondrial genome, all the 84 B. juncea mitochondrial genomes were divided into three mitotypes (MTs1-3), 22 accessions of MT1, 20 accessions of MT2, and 42 accessions of MT3. In addition, the results of the modified multiplex PCR, Indel and SNP could identify pol-, cam-, nap- (or MT4), Bol-, Bni-, Esa-, and In-cytoplasmic types in 15 other Brassicaceae accessions. Together, oilseed and vegetable B. juncea can be used for broadening the genetic background for each other.
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页数:15
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