Study of Genetic Variability for yield and yield contributing characters in Bread Wheat (Triticum aestivum L.)Pantnagar Journal of Research, Volume - 21, Issue - 3 ( September-December 2023)
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Twenty-one genotypes of wheat were evaluated for the genetic variability so the genotypes can be categorized based on their variability for hybridization programme. The analysis was carried out in Rabi season 2021-22 at Agricultural field block of Baba Farid Institute of Technology, Dehradun, in randomized block design (RBD) with 3 replications. The pre-harvest (plant height, spike length, number of tillers, days to 50% maturity and days to maturity) and post harvest (No. of seeds per spike, biological yield, economic yield, harvest index and 1000 seeds weight) parameters recorded on plant morphological traits and grain yield. On analysis of variance for the above studied parameters, it indicated wide variability among the twenty-one genotypes of wheat and shows that through crop improvement methods considerable amount of improvement can be achieved. The GCV and PCV shows highest variability in the following characters harvest index, biological yield per plot, test weight, economic yield per plot number of tillers respectively. These traits in wheat had showed high variance that can be preferred for further improvement. Economic yield per plot the essential yield attributes has positive significant correlation with harvest index and possessed positive non-significant correlation with number of seed per spike, biological yield per plot, test weight while it has negative significant correlation with days to 50% maturity. It has negative non-significant correlation with plant height, number of tillers. This represent that the twenty-one genotypes taken have substantial variation for different traits evaluated and significant association with yield that can be considered in breeding programme for increasing yield.
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