H. M. Ranganatha¹ , Shreekanth S. Patil³ , Manjula S. M³ , Arvindkumar B. N²

1. Department of Genetics and Plant Breeding, UAS, GKVK, Bangalore – 560 065, India
2. Department of Agronomy, Agricultural College, UAS, Dharwad, 580 005, India
3. Agicultural Research Station, Hebballi Farm, UAS, Dharwad, 580 007, India
Author    Correspondence author
Molecular Plant Breeding, 2013, Vol. 4, No. 10   doi: 10.5376/mpb.2013.04.0010
Received: 01 Feb., 2013    Accepted: 07 Feb., 2013    Published: 18 Feb., 2013

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Ranganatha et al., 2013, Genetic variability studies in segregating generation of upland cotton (Gossypium hirsutum L.), Molecular Plant Breeding, Vol.4, No.10 84-88 (doi: 10.5376/mpb.2013.04.0010)

The research work comprising of genetic variability, heritability and genetic advance study for seed cotton yield and its components in segregating F₂ generation of cotton (Gossypium hirsutum L.) was carried out during 2011 at the Main Agricultural Research Station, University of Agricultural Sciences, Dharwad, India. Genetic potential of segregating F2 generation for different parameters revealed plant height (39 cm to 145 cm), bolls plant per plant (8 to 41), boll weight (2.07 g to 5.29 g) and seed cotton yield per plant (25.19 g to 136.8 g). Genetic variances were found almost greater than the environmental variances for all the traits. High broad sense heritability and genetic gain were recorded for plant height (0.84 cm, 24.71 cm), bolls plant per plant (0.81, 8.04), boll weight (0.78 g, 1.02 g) and seed cotton yield per plant (0.87 g, 34.06 g), respectively. These results suggest that rigorous plant selection is required to identify desirable plants from F₂ generation.

Upland Cotton (Gossypium hirsutum L.); Segregating Generation; Genetic Variability