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Basandrai, Ashwani K.
- Genetic Diversity Analysis for Various Agromorphological, Yield and Yield Related Traits in Wheat (Triticum aestivum L.)
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Authors
Affiliations
1 Department of Genetics and Plant Breeding CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, IN
2 CSKHPKV, Rice and Wheat Research Centre, Malan, District Kangra-176 047, IN
3 Former Dean, College of Agriculture, CSK HPKV, Palampur-176 062, IN
1 Department of Genetics and Plant Breeding CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, IN
2 CSKHPKV, Rice and Wheat Research Centre, Malan, District Kangra-176 047, IN
3 Former Dean, College of Agriculture, CSK HPKV, Palampur-176 062, IN
Source
Himachal Journal of Agricultural Research, Vol 46, No 2 (2020), Pagination: 136-144Abstract
Thirty diverse wheat genotypes were used to assess the genetic diversity for various agromorphological, grain yield and yield related traits. The analysis of variance showed highly significant differences among the test genotypes for grain yield and its contributing components viz., days to 50% flowering, days to 75% maturity, number of tillers per plant, plant height (cm), biological yield (g), harvest index (%), grain yield per plant (g) and 1000 grain weight (g). High heritability along with high genetic advance and high phenotypic coefficient of variation (PCV) were recorded for biological yield per plant (g) and 1000 grain weight (g). It indicated substantial contribution of additive gene action in the expression and thus selection would be effective for genetic improvement of these traits. On the basis of multivariate analysis, 30 genotypes were grouped into '13' clusters based on genetic divergence (D2) value. The compositions of clusters revealed that the Cluster II and Cluster IV had the highest number of genotypes (9) followed by Cluster I (2). The highest intra-cluster distance was observed in cluster IV (2.05) followed by cluster II (1.98) and cluster I (1.12) and in the remaining clusters, there was only one genotype each, thereby the intra-cluster distance was zero. Cluster I (HS 507 and HPW 368) showed maximum values for biological yield per plant. Cluster III (E 9) showed minimum values for days to 75% maturity and cluster XIII showed minimum value for days to 50% flowering. Cluster VI (Roelfs F 2007) showed maximum values for tillers per plant. Cluster XI (HPW 373) showed maximum values for harvest index and cluster XII having variety Baj#1 showed maximum value for grain yield per plant and 1000-grain weight. The highest inter-cluster distance of 5.18 was observed between cluster VIII (TC1-7) and X (TC 1-24) followed by cluster VI (Roelfs F 2007) and X (TC 1-24) with a distance of 4.92 indicating that genotypes in these clusters have wide genetic diversity and thus can be used in hybridization programme for improving grain yield.Keywords
Wheat Genotypes, Genetic Diversity, Genetic Parameters, Yield Traits.Full Text
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