Abstract:

To identify the genetic diversity of common bean germplasm in Zhejiang Province, 44 common bean accessions collected from Zhejiang Province in multi-years were evaluated on 13 basic agronomic traits in the field, and it is found that large genetic variation presented on the traits including the growth habits, fresh pod commerciality in this collection. In addition, 185 SNPs from the known BARCBean6K_3 BeadChip were randomly selected and converted into KASP markers, finally the high quality genotypes of the 44 accessions were obtained from 88 KASP-SNPs. Based on the genotype data of this population, PCA and phylogenetic tree analysis both showed that Zhejiang common bean germplasms could be divided into two subpopulations, and the subpopulations differentiation was strongly associated with thousand seed weight, and most of Zhejiang common bean germplasm belong to Mesoamerican gene pool. The study results will further enrich the genetic basis of Chinese common bean germplasms and provide a scientific basis for efficient use of local resources and breeding new cultivars.

Key words: common bean, local germplasms, agronomic trait, genetic diversity, genotype