期刊
AGRONOMY-BASEL
卷 11, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/agronomy11030414
关键词
Axiom 35K Wheat Breeders array; genetic diversity; population structure; wheat genotyping
This study investigated the genetic diversity and population genetic structure of eight tetraploid Triticum turgidum L. subspecies using high-density SNP molecular markers. The findings provided a clear picture of the population structure within a collection of tetraploid wheats and highlighted the genetic potential of landraces and wild relatives for specific traits of interest. This research contributes significantly to future phenotyping and crossing activities, particularly for developing durum wheat composite cross populations adapted to Mediterranean conditions.
High-density single-nucleotide polymorphism (SNP) molecular markers are widely used to assess the genetic variability of plant varieties and cultivars, which is nowadays recognized as an important source of well-adapted alleles for environmental stresses. In our study, the genetic diversity and population genetic structure of a collection of 265 accessions of eight tetraploid Triticum turgidum L. subspecies were investigated using 35,143 SNPs screened with a 35K Axiom (R) array. The neighbor-joining algorithm, discriminant analysis of principal components (DAPC), and the Bayesian model-based clustering algorithm implemented in STRUCTURE software revealed clusters in accordance with the taxonomic classification, reflecting the evolutionary history of the Triticum turgidum L. subspecies and the phylogenetic relationships among them. Based on these results, a clear picture of the population structure within a collection of tetraploid wheats is given herein. Moreover, the genetic potential of landraces and wild relatives for the research of specific traits of interest is highlighted. This research provides a great contribution to future phenotyping and crossing activities. In particular, the recombination efficiency and gene selection programs aimed at developing durum wheat composite cross populations that are adapted to Mediterranean conditions could be improved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据