Department of Crop and Soil Sciences, NC State University, Raleigh, NC 27607, USA.
Department of Entomology and Plant Pathology, NC State University, Raleigh, NC 27607, USA.
G3 (Bethesda). 2022 Aug 25;12(9). doi: 10.1093/g3journal/jkac168.
Peas (Pisum sativum) are the second most cultivated pulse crop in the world. They can serve as human food, fodder, and cover crop. The most serious foliar disease of pea cultivars worldwide is Ascochyta blight, which can be caused by several pathogens. Of these, Peyronella pinodes is the most aggressive and prevalent worldwide. Several traits, including resistance to Peyronella pinodes, stem diameter, internode length between nodes 2-3 and 5-6, and area of 7th leaf, were measured in 269 entries of the pea single plant plus collection. The heritability (H2) of the morphological traits was relatively high, while disease resistance had low heritability. Using 53,196 single-nucleotide polymorphism markers to perform a genome-wide association study to identify genomic loci associated with variation in all the traits measured, we identified 27 trait-locus associations, 5 of which were associated with more than 1 trait.
豌豆是世界上种植量第二大的豆类作物，可作为人类食用、饲料和覆盖作物。豌豆品种最严重的叶片病害是豌豆壳二孢叶斑病，它可以由几种病原体引起，其中最具侵略性和广泛分布的是佩氏盘二孢菌。在豌豆单株加系的 269 个品系中，测量了包括对佩氏盘二孢菌的抗性、茎直径、第 2-3 和第 5-6 节之间的节间长度以及第 7 叶的面积等几个特性。形态特征的遗传力（H2）相对较高，而抗病性的遗传力较低。利用 53196 个单核苷酸多态性标记进行全基因组关联研究，以鉴定与所有测量性状变异相关的基因组位点，我们共鉴定到 27 个与性状相关的关联位点，其中 5 个与超过 1 个性状相关。
