Characterization and evaluation of wheat accessions for drought tolerance using morpho-physiological traits
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Date
2020-08
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CCSHAU, Hisar
Abstract
The objectives of present investigation were to determine the genetic variability, estimation of association between grain yield and its component traits and among themselves to find out the correlation with morpho-physiological traits of 40 genotypes of wheat under drought and irrigated condition. Significant variability was observed among genotypes for all the traits under both conditions. Genotypes WH1127, DPW621-50 for grain yield while C306 and WH1164 for biological yield per plant were found promising under both environmental conditions. Grain yield per plant showed highly significant and positive correlation with biological yield per plant, harvest index, effective tillers per plant and 1000-grains weight. The path coefficient analysis revealed that harvest index showed highest direct and positive effect on grain yield per plant followed by biological yield per plant. Genotype IC529189 showed better expression for NDVI, C.T, SPAD under drought condition while under irrigated condition, maximum value for NDVI was shown by genotype IC529909 and for SPAD genotype IC529189. Based on SSI it was found that genotype EC609575, DT25, IC539518, IC529429 were more resistant to drought. Genotypes which resulted in the expression of higher grain yield would be selected.