TITLE

ASSESSMENT OF INHERITANCE PATTERN OF SOME MULTIGENIC CHARACTERS IN COTTON (GOSSYPIUM HIRSUTUM L.)

AUTHOR(S)
Ali, Muhammad Amjad; Bhatti, Muhammad Faraz; Abbas, Amjad; Khan, Iftikhar A.
PUB. DATE
March 2010
SOURCE
Journal of Agricultural Research (03681157);Mar2010, Vol. 48 Issue 1, p25
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In a study conducted in the Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan during 2005-07 a complete diallel cross comprising five cotton cultivars (MNH-147, LRS-5166, S-12, FH-682 and DPL-2775) was made to investigate the inheritance mode of various quantitative traits. The results revealed varietal differences (P < 0.01) for all parameters. Adequacy tests showed that data for boll weight, seed cotton yield, lint percentage, fibre fineness and fibre strength were fit for additive dominance model while those of monopodia per plant, sympodia per plant, number of bolls and staple length were unfit for further analysis. Additive component of variation (D) was significant (P < 0.01) and prominent over H1 and H2 components for boll weight, seed cotton yield, lint percentage and fibre fineness, while dominant genes (H1 and H2) were main controlling factors for fibre strength and it was confidently sustained by the value of H1/D0.5. Values of h² and H2/4H1 demonstrated asymmetrical and unequal distribution fo dominant genes in parents for all characters. Boll weight, seed cotton yield, lint percentage and fibre fineness exhibited high narrow sense heritability (h²n.s) due to the existence of additive gene action. However, fibre strength acquired low heritability due to dominance effects. The genetic analysis recommended that boll weight, seed cotton yield, lint percentage and fibre fineness could be upgraded through any selection procedure, while exploitation of heterosis breeding would be progressive for fibre strength.
ACCESSION #
57232581

 

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