Character association of yield and its contributing traits in F4 and F5 populations derived from intrahirsutum cotton (Gossypium hirsutum L.) crosses

K. SAINATH, BHAVANA KANAMADI; J.M. NIDAGUNDI; REVANASIDDAYYA .; CHANNABASAVA .; V. C. RAGHVENDRA

doi:10.61475/JFS.2025.v38i4.06

K. SAINATH, BHAVANA KANAMADI Department of Genetics and Plant Breeding, college of Agriculture, Raichur University of Agricultural Sciences, Raichur - 584 104, India
J.M. NIDAGUNDI Department of Genetics and Plant Breeding, college of Agriculture, Raichur University of Agricultural Sciences, Raichur - 584 104, India
REVANASIDDAYYA . Department of Genetics and Plant Breeding, college of Agriculture, Raichur University of Agricultural Sciences, Raichur - 584 104, India
CHANNABASAVA . Department of Genetics and Plant Breeding, college of Agriculture, Raichur University of Agricultural Sciences, Raichur - 584 104, India
V. C. RAGHVENDRA Department of Genetics and Plant Breeding, college of Agriculture, Raichur University of Agricultural Sciences, Raichur - 584 104, India

DOI: https://doi.org/10.61475/JFS.2025.v38i4.06

Keywords: Cotton, Checks, F4, F5 generations, Genotypes, Phenotypic correlation

Abstract

This study explores the phenotypic correlations among yield and fiber quality traits in 84 genotypes of cotton (Gossypium hirsutum L.) aiming to identify key traits for yield improvement. The study was conducted during the kharif2023 season at MARS, Raichur. The experiment included F4 and F5 cotton populations using an augmented block design. Observations were made on plant height, monopodia, sympodia, boll number, lint yield, boll weight and fiber traits such asfiber strength, elongation and micronaire value. Results revealed that seed cotton yield exhibited significant positivecorrelations with plant height (0.431), number of monopodia (0.340), number of bolls per plant (0.727), boll weight (0.649)and lint yield (0.953). While fiber elongation and micronaire value also correlated positively with seed cotton yield, theseassociations were non-significant. Among fiber quality traits, lint index showed a significant positive association withginning outturn and seed index suggesting their potential for improving both yield and quality traits. This study underscoresthe importance of plant height, monopodia, number of bolls, boll weight and lint yield as selection criteria in breedingprograms targeting higher cotton yields.