Mohd. Saleem Wani , Afaq Majid Wani

Abstract

Twenty genotypes of Madhuca inidica Gmel. scattered over district Allahabad, and adjoining areas in Uttar Pradesh in their natural range were studied for the pattern of genetic variation. Higher values for phenotypic coefficient of variation as compared to genotypic coefficient of variation in germination and nursery growth parameters, indicate that they are greatly influenced by the environment. The heritability and expected genetic gain were also observed to be high for these characters, except for number of leaves per seeding, leaf area, shoot/ischolar_main ratio and total biomass of seedling. The correlations between germination per cent, germination energy index per cent,mean daily germination, seedling height, seedling collar diameter and internodal length at phenotypic level were positive and significant. The families F₁₅, F₁₈, F₁₉ and F₂₀ showed good performance and are recommended for further genetic improvement programme in this species.

Keywords

, Genetic Variability, Germination, Heritability

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Mohd. Saleem Wani ¹, A. M. Wani ², A. H. Mughal ¹

Affiliations
1 School of Forestry and Environment, Sam Higgonbottom Institute of Agriculture, Technology and Sciences. (Formerly - Allahabad Agricultural Institute), Allahabad, U.P., IN
2 Faculty of Forestry, SKUAST-K, Srinagar, Shilimar, J&K, IN

Abstract

This experiment was aimed to study the genetic diversity among twenty half-sib progenies of Madhuca indica belonging to different places of Allahabad (U.P), India. Seeds of 20 candidate plus trees were sown in greenhouse and open field environments with a view to assess the impact of two different environments on the expression of genetic diversity using Non-hierarchical Euclidean cluster analysis. Superior tree progenies were grouped into five clusters under green house as well as field environments. Families of plus trees S₂ and S₁₄ formed same groups in different clusters. Inter-cluster distance was found to be highest between cluster III and V, both under green house and field environment. Higher values of inter and intra cluster distance in field environment as compared to green house environment may be attributed to greater environmental differences, revealing their genetic closeness from high to medium. Leaf area followed by seedling height contributed maximum to the total divergence and played a prominent role in creating the genetic diversity.

Keywords

Cluster, D² Statistics, Genetic Divergence, Madhuca Indica.

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