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- 저자 : Changlong Wen (검색결과 1 건)
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Peirong Li,Tongbing Su,Shuancang Yu,Huiping Wang,Weihong Wan,Yangjun Yu,Deshuang Zhang,Xiuyun Zhao,Changlong Wen,Fenglan Zhang 한국원예학회 2019 Horticulture, Environment, and Biotechnology Vol.60 No.3
Rapid, economical, and reliable genotyping is an important requirement for germplasm analysis and cultivar identifi cationin crop species. Chinese cabbage ( Brassica rapa L. subsp. pekinensis (Lour.) Hanelt) originated in China and is now aneconomically important vegetable crop worldwide, especially in East Asia. In this study, we evaluated 1167 single nucleotidepolymorphisms (SNPs) among 166 representative Chinese cabbage inbred lines using a KASP genotyping assay. Onthe basis of polymorphisms and principal component analysis, we selected 60 core SNPs distributed on all Brassica rapachromosomes with allele frequencies suffi ciently balanced so as to provide adequate information for genetic identifi cation. The core set of SNPs was used for construction of a neighbor-joining dendrogram, in which the 166 inbred lines wereclustered into spring, summer, and autumn ecotype groups. Clustering of the ecotype groups was better resolved than thatachieved with 1167 and 360 polymorphic SNP datasets. Stability and resolution of the core SNP markers were tested using178 commercial hybrid Chinese cabbage cultivars to confi rm their utility in genetic identifi cation. The set of 60 informativeand stable SNP markers showed high discriminatory power and relatively uniform genomic distribution (4–9 markers perchromosome). The SNPs represent a cost-effi cient and accurate marker set for germplasm analysis and cultivar identifi cationand are suitable for molecular marker-assisted breeding in Chinese cabbage.
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