Effect of temperature regimes on yield and yield components of groundnut genotypes (Arachis hypogaea L.)

R. DIVYA BHARATHI; V. P. CHIMMAD

doi:10.61475/JFS.2025.v38i4.30

R. DIVYA BHARATHI Department of Crop Physiology, College of Agriculture, Dharwad University of Agricultural Sciences, Dharwad - 580 005, India
V. P. CHIMMAD Department of Crop Physiology, College of Agriculture, Dharwad University of Agricultural Sciences, Dharwad - 580 005, India

DOI: https://doi.org/10.61475/JFS.2025.v38i4.30

Keywords: Groundnut, Pod number, Pod weight, Seed weight, Temperature regimes, Total dry matter

Abstract

Field experiment was under taken during late rabi /summer, 2019-20 with two temperature regimes (dates ofsowing, 49th and 03rdSMW)and 23 groundnut genotypes (including 11 RIL populations) under factorial randomized blockdesign at University of Agricultural Sciences, Dharwad. The results revealed that total biomass accumulation (42.22 g),number of pods per plant (19.18), pod weight per plant (16.82 g) and seed weight per plant (16.82 g) were remarkablyhigher under 49th SMW, while under 3rd SMW reduction in 32.6, 35.2, 37.75 and 36.8% was observed, respectively. Thegenotypes RIL-118 and RIL-99 recorded maximum value of above yield traits, whereas the genotype R-2001-2 and KADIRI-9 maintained the value of yield parameters under both temperature regimes.The total dry matter was positivelycorrelated with pod number (0.538**), seed weight (0.592**) and pod weight (0.611**) under normal date of sowing, whileno correlation was observed under delayed sown conditions.