Two clusters of QTL mapped on the linkage groups III and one cluster on LGVI reveal the genetic links between phenology, morphology, yield-related traits and frost tolerance in winter pea. One hundred sixty-one quantitative trait loci (QTL) explaining 9-71Â % of the phenotypic variation were detected across the six environments for all traits measured.
We developed a genetic map comprising 679 markers distributed over seven linkage groups and covering 947.1 cM. Using a newly identified source of frost resistance, we developed a population of recombinant inbred lines and evaluated it in six environments in Dijon and Clermont-Ferrand between 20. In this context, we investigated the genetic determinism of winter frost tolerance and assessed its genetic relationship with yield and developmental traits. Breeding winter cultivars requires the combination of freezing tolerance as well as high seed productivity and quality. The development of the winter pea crop represents a major challenge to expand plant protein production in temperate areas. Klein, Anthony Houtin, Hervé Rond, Céline Marget, Pascal Jacquin, Françoise Boucherot, Karen Huart, Myriam Rivière, Nathalie Boutet, Gilles Lejeune-Hénaut, Isabelle Burstin, JudithĪvoidance mechanisms and intrinsic resistance are complementary strategies to improve winter frost tolerance and yield potential in field pea. QTL analysis of frost damage in pea suggests different mechanisms involved in frost tolerance.
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