National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Water relation traits and antioxidant metabolism play a very imperative role in barley growth and productivity when crop imposed under restricted irrigation. Present investigation was planned to study the responses to water status and antioxidant mechanism under normal (irrigated) and drought (restricted irrigation) condition. Twenty barley genotypes were cultivated under irrigated (Two irrigations at tillering and anthesis each) and limited irrigation conditions (one irrigation at tillering) in concrete drought plots during the 2014-15 and 2015-16 growing seasons at the Crop physiology field area, Hisar. The experiments were laid out using RBD with three replications. The results from combined analysis of variance in both normal and drought conditions indicated that there were significant differences among genotypes with regard to all studied traits which were due to high variation among the genotypes. Limited irrigation significantly decreased the plant leaf water potential, leaf osmotic potential and relative water content while increased membrane injury in all barley genotypes studies. It was found that the activity of enzymes including superoxide dismutase (SOD), catalase (CAT) and peroxidase (POX) were increased under drought stress conditions, so that tolerant genotypes had more changes in enzyme activity. Genotypes BH 14-05 and BH-10-30 in present study were found better antioxidant activity and maintained plant water status among all the genotypes under both normal and restricted irrigation condition and vice-versa. These genotypes because of better plant water status and antioxidant activity were found maximum in grain yield.
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