Vol. 18 No. 1
Divergence of bread wheat genotypes (Triticum aestivum L.) assessed by Multivariate Biplot analysis based on important markers
Author(s): Ashish, V. Singh, S.K. Sethi, S. Madaan, P. Kumar, Antim and A. Verma
Abstract: Morphological and molecular markers of fifty seven wheat genotypes had been evaluated for divergence analysis. About 60% to 91% contribution for morphological and 24% to 98% for quality traits had been accounted by genotypes to the total sum of squares. Total of 0.8 to 54 % of genotypic variability and 0.96 to 63 phenotypic variability was recorded for morphological whereas corresponding to quality traits ranged from 0.15 to 25.4 and 0.16 to 25.4 respectively. High heritability and genetic advance as per cent of mean were found in harvest index, biological yield, grain yield/plot, number of grains/ear, wet gluten content, grain hardness, dry gluten content, beta carotene, Mn content. Highly significant positive correlation of grain yield was expressed with ear length, number of grains per ear, number of spikelets per ear, harvest index, biological yield, and number of effective tillers. More over positive and significant correlation of thousand grains weight exhibited with spike length. The first principal component (PC) accounted for 16.4% of the total variation. Major traits for the variations in biplot analysis were wet gluten, dry gluten, Zn content, days to flowering, days to maturity, harvest index, Cu content and protein content. Grain yield, biological yield, plant height, days to flowering, days to maturity, leaf length, number of spikelets per spike, thousand grains weight contributed to second principal component.
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