Genetic variability and diversity studies in snapdragon (Antirrhinum majus) under tarai conditions of Uttarakhand

RAKESH KUMAR; SANTOSH KUMAR; AWANI KUMAR SINGH

doi:10.56093/ijas.v82i6.19024

Authors

RAKESH KUMAR Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakhand 263 145, India
SANTOSH KUMAR Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakhand 263 145, India
AWANI KUMAR SINGH Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakhand 263 145, India

https://doi.org/10.56093/ijas.v82i6.19024

Keywords:

Cluster pattern, Genetic advance, Heritability, Snapdragon, Variability

Abstract

Field experiment was conducted for two consecutive years to evaluate snapdragon genotypes for genetic variability, heritability and genetic advance. Analysis of results revealed highest range of variation for number of leaves/plant. General mean was highest for number of leaves/plant and lowest for petiole length. Phenotypic and genotypic coefficient of variation was recorded maximum for number of secondary branches/plant and minimum for days taken to flowering. Genetic advance was observed maximum for number of leaves/plant and minimum for petiole length. High heritability with high genetic advance as per cent of mean was noticed for floret diameter. On the basis of D2 values, thirtyfive genotypes were grouped into five clusters. Maximum inter- cluster distance was observed between cluster III and IV, followed by II and III.

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