Formerly International Journal of Basic and Applied Agricultural Research

Studies on genetic diversity and character association analysis in wheat (Triticum aestivum L. em. Thell)

Pantnagar Journal of Research, Volume - 21, Issue - 3 ( September-December 2023)

Published: 2024-01-29

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The experiment was conducted in the Augmented Block Design, comprised of 90 entries, along with 3 check varieties Sonalika, HD 2967 and HI 8713. Results revealed that variance was the highest for grain yield per plot and the lowest for spike length. The coefficient of variability was the highest for grain yield and the lowest for days to 75% heading. The highest heritability was recorded for tillers per meter and the lowest for 1000- grain weight. Grain yield exhibited highest genetic advance in percent of mean and lowest for days to 75% heading. However, with respect to correlation with one or other traits, grain yield was positive and significantly correlated with days to 75% heading, plant height, tillers per meter, grain per spike, spike length and grain yield per plot. Path coefficient revealed that 1000- grain weight exerted positive effect on all characters except days to 75% heading. The genotypes were classified into 7 different clusters by Non- Hierarchical Euclidean Cluster Analysis. Cluster -I had 13 genotypes whereas cluster -II had 20 genotypes, cluster- III had 8 genotypes, cluster -IV had 12 genotypes, cluster -V had 9 genotypes, cluster-VI has 15 genotypes and cluster-VII had 16 genotypes. Inter cluster distance was found maximum between cluster –III and cluster –IV and minimum was found in cluster–I and II.

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