Journal of FARM SCIENCES, Vol 25, No 4 (2012)

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Evaluation of F11 recombinant lines of G. herbaceum x G. anomalum and G. herbaceum x G. barbadense crosses for fibre traits in cotton

V.M. Choudki, I.S. Katageri, Rajesh S. Patil, H.M. Vamadevaiah

Abstract


Wild species are having desirable fibre characters and can be efficiently transferred and stabilized in cultivated cotton species. Advance generation (F11) selected recombinant lines of G. herbaceum x G. anomalum and G. herbaceum x G.barbadense crosses were evaluated in randomized block design (RBD) at ARS, Dharwad Farm during 2009-10. These newly developed genotypes showed desirable positive significant performance over checks for most of the yield and fibre quality traits. Estimates of genotypic and phenotypic coefficient of variation was highest for number of monopodia, boll weight and seed cotton yield. The magnitude of phenotypic coefficient of variation was higher than that of genotypic coefficient of variation. There was narrow variation in the PCV and GCV values. Boll weight, seed index, ginning outturn, lint index and halo length were positively associated with seed cotton yield. Seed cotton yield exhibited significant negative correlation with monopodia per plant and uniformity ratio. Genotypes showing fibre length more than 26mm and fibre strength of more than 18 g/tex with good boll bearing habit (>12 bolls/plant) and boll weight (>2.5g) were observed. It indicates the possibility of improving G. herbaceum genotypes using G. anomalum and G. barbadense as a donor parents.

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