Vol. 10, Issue 9 (2021)

Author(s):
V Thirumala Rao, A Sudarshanam, B Ramprasad and D Aswini

Abstract:
The research was carried out for genetic variability, heritability and genetic advance of eighteen germplasm lines. Analysis of variance revealed significant difference among genotypes for all the eleven characters studied. The magnitude of PCV and GCV was moderate to high for seed cotton yield, number of sympodia per plant and boll weight. High heritability was recorded for tenacity, upper half mean length, seed cotton yield, boll weight, micronaire, palnt height and number of sympodia per plant. High heritability combined with high genetic advance was recorded for seed cotton yield, Plant height, boll weight, micronaire and number of sympodia per plant indicating that these characters are controlled by additive gene effect and phenotypic selection of these characters would be effective for further breeding purpose. Seed cotton yield has positive correlations boll weight, number of bolls per plant, number of sympodia per plant and palnt height along with quality parameters Uniformity index, upper half mean length, tenacity and these are major characters to be given selection pressure for improving yield.