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Beena Thomas, CLekha Rani, and Roshin Mariam George
Issue: 2020, 34 ,57-60

Orchid genotypes comprising of six genera i.e., Aranda, Aranthera, Kagawara, Mokara, Renanthera, and Vanda were evaluated using completely randomized design with five replications. The selected materials were evaluated by recording observations on their vegetative and floral characters. Parameters of variability, heritability, and expected genetic advance were calculated. The mean and standard errors were worked out as per standard methods and then coefficients of variation were computed. Genotypic and phenotypic coefficients of variation were high for thickness of leaf, leaf area, and number of aerial roots indicating high variability for these characters and scope for improvement through selection. High heritability (>70%) combined with genetic advance greater than 70 per cent was observed for number of aerial roots, leaf width, leaf thickness, leaf area, number of spikes per shoot, and number of flowers per inflorescence indicating additive gene action for these characters and providing thereby a greater scope for further improvement of these traits in advance generations.

https://doi.org/10.64873/JOSI.v34.i1-2.57-60