Deciphering Hybrid Larch Reaction Norms Using Random Regression.

ABSTRACT: The link between phenotypic plasticity and heterosis is a broad fundamental question, with stakes in breeding. We report a case-study evaluating temporal series of wood ring traits of hybrid larch (Larix decidua × L. kaempferi and reciprocal) in relation to soil water availability. Growth rings record the tree plastic responses to past environmental conditions, and we used random regressions to estimate the reaction norms of ring width and wood density with respect to water availability. We investigated the role of phenotypic plasticity on the construction of hybrid larch heterosis and on the expression of its quantitative genetic parameters. The data came from an intra-/interspecific diallel mating design between both parental species. Progenies were grown in two environment

SUBMITTER: Marchal A 

PROVIDER: S-EPMC6325918 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature