Genetic Mapping for Seed Area and Seed Perimeter in Cultivated Peanut(Arachis hypogaea L.)
Seed area and perimeter are important traits affecting the size and appearance of peanut seed.In this study,a recombinant inbred line(RIL)population derived from Luhua11 X06B16 was used to conduct QTL mapping analysis of seed area(SA)and seed perimeter(SP)in four different environments.Based on phenotypic data and a high-density genetic map,a total of 15 QTLs associated with SA and SP were identified on chromosomes A04 and B06,including 8 QTLs associated with SA and 7 QTLs associated with SP.The major stable QTL qSAB06.1d and qSPB06a were identified on linkage group B06 associated with SA and SP explaining 9.52％to 33.78％phenotypic variations,locating on the region of 138.53-140.76 Mb on chromo-some B06 with Luhua11 allele contributing to the traits.Gene annotation of the major QTL region was per-formed and identified three transport proteins,an ABA receptor PYL,and a calcium-dependent phosphatase,which may be candidate genes for peanut SA and SP.This study lays a theoretical foundation for the fine mapping and genetic improvement of peanut yield and appearance traits.
万方数据
维普
