Variability and association analysis for yield and quality traits in wheat
2007
Saxena, Payal | Rawat, R.S. | Verma, J.S. | Meena, B.K.
Analysis of variance revealed highly significant genetic differences among the genotypes for all the characters under study. The GCV, PCV were estimated as high in comparison to ECV, which indicated that variability was influenced by the environment. High heritability (75%) was estimated for biological yield per plant, grain yield per plant, harvest index, plant height, number of grains per ear, tillers per plant, 1000-kernel weight, days to maturity and protein content and it was moderate (50 to 75) for total number of spikelets per ear, wet gluten and days to heading and low heritable character observed as spike length and zeleny. Genetic advance was also highest for the character biological yield per plant. Low genetic advance was shown by zeleny, days to maturity, wet gluten, days to heading, total number of spikelets per ear, spike length and protein content. Biological yield per plant, tillers per plant, harvest index, days to heading had strong positive and significant correlation with grain yield per plant. Protein content, wet gluten and zeleny showed positive correlation among themselves and these three traits had significant negative correlation with 1000-kernel weight and spike length. Wet gluten exhibited a highly significant positive correlation with protein content. Positive direct effects of biological yield per plant, number of grains per ear, tillers per plant, 1000-kernel weight, days to heading and days to maturity on grain yield was observed.
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