Unravelling the photosynthetic dynamics and fluorescence parameters under ameliorative effects of 24-epibrassinolide in wheat (Triticum aestivum L.) grown under heat stress regime.

ABSTRACT: An experiment was performed at the Banaras Hindu University, India to study the effect of terminal heat stress on photosynthetic dynamics and fluorescence parameters of wheat genotypes and ameliorative effects of epibrassinolide by taking two genotypes with four concentrations as foliar spray at two growth stages of wheat. The highest values were observed in plots foliar sprayed with 1.0 µM 24-epibrassinolide (T1) under normal conditions (D1) where the genotype Sonalika (V1) performed significantly well w.r.t. the parameters viz. steady-state fluorescence (Fs) 116.22, quantum efficiency of PSII 0.59, maximum fluorescence (Fm) 776.5, normalized stress detection ratio (Fv/Fo) 4.47, maximum potential quantum efficiency of PSII (Fv/Fm) 0.82.Whereas under heat stress condition (late sown D2), t

SUBMITTER: Jat M 

PROVIDER: S-EPMC11680823 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature