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Acta Horticulturae Sinica ›› 2024, Vol. 51 ›› Issue (11): 2495-2509.doi: 10.16420/j.issn.0513-353x.2023-0988

• Genetic & Breeding·Germplasm Resources·Molecular Biology • Previous Articles     Next Articles

SSR Marker Association Analysis and Fingerprint Construction of Main Traits of Plum Fruit

YUE Linqing1, WU Yichao1, HE Xingxing1, XIANG Mingyan1, WANG Jin2, WU Zheng2, ZHU Shiguo3, DING Mengqi1, ZHANG Jian1, FANG Xiaomei1,**(), YI Zelin1,**()   

  1. 1 School of Agriculture and Biotechnology,Southwest University,Chongqing 400715,China
    2 Fruit Research Institute of Chongqing Academy of Agricultural Sciences,Chongqing 401329,China
    3 Chongqing Seed Station,Chongqing 400060,China
  • Received:2024-03-26 Revised:2024-08-20 Online:2024-12-12 Published:2024-11-25
  • Contact: FANG Xiaomei, YI Zelin

Abstract:

A study on eleven fruit features generated from 102 plum resources was carried out in 2022 and 2023. The coefficient of variation for fruit weight was the highest,while edible ratio and fruit shape indices had lower coefficients. A total of 405 allelic variants were amplified in the test material using 78 pairs of polymorphic primers,with polymorphism information content(PIC)ranging from 0.06 to 0.80 and a mean value of 0.53. An association analysis revealed that 55 SSR markers had highly significant associations with 11 major traits,explaining 4.01%-14.76% of the phenotypic variance. Among the test materials,29 exhibited two or more highly significant associations with traits in two years under GLM and MLM models. From 78 primers,27 pairs of primers were selected to distinguish 102 materials,and the fingerprints of 102 plum resources were constructed.

Key words: plum, SSR, association analysis, fingerprint mapping