Author(s):

Soujanya P, Balaji S Kulkarni and Harshavardhan M

Abstract: Twenty-five varieties of Hybrid Tea rose were evaluated to determine genetic variability, heritability, genetic advance and genetic advance as per cent mean for significant variations were recorded for the various characters studied. Phenotypic co-efficient of variation was higher than genotypic co-efficient of variation for all the characters. Narrow differences between GCV and PCV were observed for all the characters excepting plant spread in East- West and North- South, number of cut flowers per plant, number of cut flowers per m2, stalk length and vase life, indicating minimal environmental influence on expression of these characters. High (>20%) genotypic and phenotypic co-efficient of variation were recorded for plant height, flower yield per plant, number of petals/flower, stalk length and vase life indicating the presence of maximum variability among the varieties studied. Heritability estimates ranged from 62.02% (plant spread in East- West) to 98.80% (flower bud diameter). High heritability, coupled with high genetic advance as per cent mean was recorded for flower bud diameter, flower yield per plant, individual leaf area, number of petals per flower, stem girth, days from bud initiation to full bloom stage, plant height, vase life, stalk length, number of cut flowers per m2 and number of cut flowers per plant. Therefore, these traits can be improved through selection and breeding.

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