From Light Harvesting to Grain Filling: Chlorophyll Fluorescence, Pigment Composition, and Oxidative Status as Discrete Yield Determinants in Rye.

ABSTRACT: Improving rye (Secale cereale) yield under increasing climatic stress remains a major challenge for sustainable cereal production. We examined whether early-vegetative physiological, biochemical, and molecular traits can predict final grain yield in hybrid-breeding components. Across three consecutive seasons, 14 genotypes were evaluated under controlled cold-greenhouse conditions for chlorophyll fluorescence, pigment content, hydrogen peroxide (H₂O₂), salicylic acid (SA) levels, and the expression of selected antioxidant and defence-related genes, and these traits were related to yield components. Across years, photosynthetic efficiency (F_v/F_m, Rfd), chlorophyll content, and foliar H₂O₂ emerged as the m

SUBMITTER: Duszyn M 

PROVIDER: S-EPMC12737187 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature