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Acta Horticulturae Sinica ›› 2024, Vol. 51 ›› Issue (11): 2510-2522.doi: 10.16420/j.issn.0513-353x.2024-0066

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

Development and Application of Prunus salicina InDel Markers Based on Genome Re-sequencing

CHEN Fangce1, HU Pingzheng2, XIE Weiwei1, WANG Zhengpeng1, ZHONG Chuangnan1, LI Haiyan3, HE Yehua1, PENG Ze1, WAN Baoxiong3,*(), LIU Chaoyang1,*()   

  1. 1 Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China,Ministry of Agriculture and Rural Affairs,Colleage of Horticulture,South China Agricultural University,Guangzhou 510642,China
    2 Chongqing Guopai Horticulture Co.,Ltd.,Chongqing 402560,China
    3 Guangxi Academy of Special Crops,Guilin,Guangxi 541004,China
  • Received:2024-04-02 Revised:2024-09-03 Online:2024-12-12 Published:2024-11-25
  • Contact: WAN Baoxiong, LIU Chaoyang

Abstract:

Based on the genome re-sequencing results of several Chinese plum(Prunus salicina)germplasm resources,a series of candidate indel loci were mined,and 53 InDel markers which were distributed on different chromosomes and exhibited stable polymorphism,were screened out. The genetic diversity of 79 plum germplasm resources was evaluated by using 53 InDel markers. The average frequency of major alleles was 0.6593,the genetic diversity index(Hs)was 0.4304,and the polymorphism information content(PIC)was 0.3489. Among them,45 markers had high polymorphism information content(PIC > 0.25). Based on UPGMA cluster analysis,79 accessions were divided into 2 groups and 10 subgroups with genetic similarity coefficients of 0.623 and 0.666,respectively. The classification results were related to the geographical distribution of germplasm resources. The plum germplasms were distinguished by 13 InDel markers,and the germplasm specific molecular identity cards were constructed. By selecting InDel markers with polymorphism among parents,the F1 hybrid authenticity of positive and negative cross combinations of two plum cultivars in South China was identified.

Key words: plum, InDel marker, genetic diversity, molecular identity card, F1 identification