PJB-2020-327
Improvement of seed cotton yield and fiber quality parameters in upland cotton (Gossypium hirsutum L.) genotype through chemical mutagen
Zaheer Ahmed Deho
Abstract
Abstract Eight mutant lines developed through mutation breeding technique using chemical mutagen along with parent line (Sadori) were evaluated at NIA, experimental farm. Quantitative and qualitative traits were analyzed statistically. The chemical mutagen Ethyle Methane Sulphonate (EMS) was used at the rate of 0.03%. The mutant lines (viz. NIA-M5, NIA-M10, NIA-M16, NIA-M20, NIA-M23, NIA-M29, NIA-M33 and NIA-M35) with parent Sadori were used in this study. The results revealed that three mutants (NIA-M20, NIA-M35 and NIA-M5) took (7.2%, 8.1% and 8.1%) higher plant height than parent (111 cm), two mutants (NIA-M5 and NIA-M20) obtained (36.8% and 42.1%) more sympodial branches plant-1 than parent (19.0). Three mutants (NIA-M20, NIA-M5 and NIA-M10) produced (16.8%, 22.4.0% and 25.4%) more number of bolls plant-1 than parental line (67.0). Five mutants (NIA-M5, NIA-M35, NIA-M20, NIA-M23 and NIA-M29) had higher fiber length (mm) (10.2%, 8%, 5.7%, 5% and 4.0%) as compared with parent sadori (28.0 mm).Two mutants (NIA-M20 and NIA-M29) showed higher fiber strength (g/tex) (5.5% and 8.3 %) than parent (34.4%). Two mutants (NIA-M5 and NIA-M20) produced higher seed cotton yield kgha-1 (24.0% and 25.4%) over to parent Sadori (3563 kg ha-1). The selected mutant lines on the basis of higher seed cotton yield kgha-1 and enhanced fiber length (mm) in comparison with parent (Sadori) which will be promoted in preliminary yield trials. High heritability and high genetic advance were noted for early days to maturity, higher plant height (cm), sympodial branches plant-1, higher fiber length (mm), number of bolls plant-1 and seed cotton yield (kgha-1). Key words: Cotton, yield, mutant, fiber length, mutagen
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