Genetic diversity for morpho-genetic traits in barley germplasm
2008
Ahmad, Z. (National Agricultural Research Centre, Islamabad (Pakistan). Crop Sciences Inst.) | Ajmal, S.U. (PMAS Arid Agriculture Univ., Rawalpindi (Pakistan). Dept. of Plant Breeding and Genetics) | Munir, M. (PMAS Arid Agriculture Univ., Rawalpindi (Pakistan). Dept. of Plant Breeding and Genetics) | Zubair, M. (National Agricultural Research Centre, Islamabad (Pakistan). Crop Sciences Inst.) | Masood, M.S. (National Agricultural Research Centre, Islamabad (Pakistan). Plant Genetic Resources Program)
Barley (Hordeum vulgare L.) germplasm comprising of 133 accessions collected from Pakistan was evaluated for 14 quantitative traits. Significant amount of genetic variation was observed for most of the plant characteristics. All the accessions were grouped into 7 clusters on the basis of morphological similarities. Representative accessions from a cluster of particular group could be chosen for hybridization program. First five principal components having greater than 1 eigenvalue contributed more than 83.40% genetic variation. The PC1 accounted for 33.60% of the total variation. The characters contributing more positively to PC1 were grain yield, 1000 grain weight, heading days, maturity days, plant height, harvest index and biomass. Analysis on the basis of regions revealed that accessions from Northern Areas performed better for early heading, longer grain filling period, broader leaf area, short plant height and number of grains per spike.
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