Identification of drought tolerant genotypes based on physiological, biomass and yield response in groundnut (Arachis hypogaea L.) | Zendy

Sujata Mahantesh | Zendy; Harish Babu | Zendy; Kirankumar Ghanti | Zendy; P. C. Raddy | Zendy

Open Access

Identification of drought tolerant genotypes based on physiological, biomass and yield response in groundnut (Arachis hypogaea L.)

Author(s) -

Sujata Mahantesh,

Harish Babu,

Kirankumar Ghanti,

P. C. Raddy

Publication year - 2018

Publication title -

indian journal of agricultural research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.241

H-Index - 8

eISSN - 0976-058X

pISSN - 0367-8245

DOI - 10.18805/ijare.a-4984

Subject(s) - arachis hypogaea , point of delivery , germination , moisture stress , drought tolerance , shoot , moisture , crop , agronomy , water content , irrigation , biology , biomass (ecology) , abiotic stress , horticulture , yield (engineering) , abiotic component , crop yield , chemistry , paleontology , biochemistry , materials science , geotechnical engineering , organic chemistry , gene , metallurgy , engineering

Drought are serious threats on crop productivity losses than any other abiotic stress factor in rainfed agriculture. Influence of the drought using osmotic stress is the one of the best method for the evaluation of tolerance during the germination phase. Seeds of Twenty genotypes of groundnut imposed to osmotic stress (-10bars) of polyethylene glycol (PEG6000) in the laboratory condition. Based on low percent reduction recovery growth (%RRG) in shoot and root length most sensitive and tolerant 16 genotypes were selected. Further, moisture stress was imposed at 20-day-old seedlings at WW (100%FC), MS1 (70%FC), MS2 (30%FC)) under controlled conditions (greenhouse) different filed capacity. The harmful effects of moisture stress were more distinct in drought sensitive genotypes. High mean value of drought susceptibility indexes (DSI) for GPBD-4(G1), JL-24(G2) and KCG-6(G3) G1, G2 andG3 were identified as susceptible and NRCG12273 (G13), ICGV1562 (G15) and TMV-2(G16), G16, G15 and G13 recorded superior performance for less DSI under two soil moisture levels. High pod yield under stress environment due to its ability in maintaining pod number as well as total biomass. There was no significant difference between Pod yield and TDM under moisture stresses of DSI for G1, G2 and G3 genotypes.

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