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- Title
EVALUATION OF GENETIC POTENTIAL OF INTRAHIRSUTUM F2 POPULATIONS THROUGH LINE × TESTER ANALYSIS.
- Authors
Baloch, M. J.; Bughio, Q. A.; Baloch, A. W.; Jatoi, W. A.; Arain, M. A.; Baloch, A.; Halo, F. M.
- Abstract
ABSTRACT The objectives of research were to estimate the GCA, SCA and heritability for yield and fiber traits in F[sub 2]populations. Four lines were crossed with 4 testers and 16 F[sub 2]populations were obtained for evaluation for determining combining ability and heritability estimates. The trials were laid-out in RCBD with four replications during 2013 and 2014. Combined analysis revealed that genotypes performed differently over the years; however genotype × year interactions were non-significant for majority of the traits. Mean squares for lines and testers were significant, indicating the importance of GCA with additive genes while lines × tester interactions implied the importance of SCA with dominant genes. The lines, Sadori and CIM-573 and testers FH-113 and IR-1524 were good general combiners hence showed their suitability for hybridization and selection programmes. Degree of dominance was higher than unity which suggested the prevalence of dominant genes. The heritability estimates were generally low because of greater portion of dominant variances.
- Subjects
COTTON genetics; COTTON yields; HERITABILITY; PLANT selection; PLANT hybridization
- Publication
JAPS: Journal of Animal & Plant Sciences, 2016, Vol 26, Issue 3, p745
- ISSN
1018-7081
- Publication type
Article