Genome-wide association study uncovers pea candidate genes and metabolic pathways involved in rust resistance.

Pea (Pisum sativum L.) is an important temperate legume crop providing plant-based proteins for food and feed worldwide. Pea yield can be limited by several biotic stresses, among which rust represents a major limiting factor in many temperate and subtropical regions.

Genomic prediction for rust resistance in pea.

Genomic selection (GS) has become an indispensable tool in modern plant breeding, particularly for complex traits. This study aimed to assess the efficacy of GS in predicting rust () resistance in pea (), using a panel of 320 pea accessions and a set of 26,045 Silico-Diversity Arrays Technology (Silico-DArT) markers. We compared the prediction abilities of different GS models and explored the impact of incorporating marker × environment (M×E) interaction as a covariate in the GBLUP (genomic best linear unbiased prediction) model.

Genome-Wide Association Studies on Resistance to Pea Weevil: Identification of Novel Sources of Resistance and Associated Markers.

Little resistance to the pea weevil insect pest () is available in pea () cultivars, highlighting the need to search for sources of resistance in germplasm and to decipher the genetic basis of resistance. To address this need, we screened the response to pea weevil in a germplasm collection (324 accession, previously genotyped) under field conditions over four environments. Significant variation for weevil seed infestation (SI) was identified, with resistance being frequent in , followed by ssp.

RGB image-based method for phenotyping rust disease progress in pea leaves using R.

Background: Rust is a damaging disease affecting vital crops, including pea, and identifying highly resistant genotypes remains a challenge. Accurate measurement of infection levels in large germplasm collections is crucial for finding new resistance sources. Current evaluation methods rely on visual estimation of disease severity and infection type under field or controlled conditions.

Genetic Diversity and Population Structure of a Wide spp. Core Collection.

Peas () are the fourth most cultivated pulses worldwide and a critical source of protein in animal feed and human food. Developing pea core collections improves our understanding of pea evolution and may ease the exploitation of their genetic diversity in breeding programs. We carefully selected a highly diverse pea core collection of 325 accessions and established their genetic diversity and population structure.

Identification and Characterization of Novel Sources of Resistance to Rust Caused by in spp.

Pea rust is a major disease worldwide caused by in temperate climates. Only moderate levels of partial resistance against have been identified so far in pea, urging for enlarging the levels of resistance available for breeding. Herein, we describe the responses to of 320 spp.