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VARIABILITY AND DIVERSITY STUDIES IN DURUM WHEAT (Triticum Durum)

Journal article published in 2013 by M. A. Alam, Aa A. Khan, Mk K. Alam ORCID, Zi I. Sarker, Mm M. Rahman
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The present investigation was carried out to study genetic variability and diversity in 13 advanced durum wheat genotypes along with the two local checks namely WRF-7 and Prodip. Statistical analysis revealed significant differences for all the characters studied, indicating presence of considerable amount of variations among genotypes for each character. The high genotypic and phenotypic coefficient of variation were obtained for grains/spike and spikes/m 2 . Moderate to high heritability with moderate genetic advances in percent of means were estimated against plant height, spikes/m 2 and 1000-grain weight and these characters could be efficiently exploited through selection. Fifteen genotypes were grouped into five clusters based on D 2 -statistics. Genotypes in cluster III showed maximum intra-cluster distance (0.3193) and the clusters IV and V exhibited the highest genetic distance (24.774). Therefore, parental selection from these two clusters would be effective for improvement. Maturity days was the greatest contributor to genetic divergence. Genotypes in cluster IV showed maximum diversity and can be used as parents in hybridization programs to develop high-yielding varieties. The genotypes in cluster IV may be included in crossing programme for the improvement of yield potential in durum wheat.