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Asian Journal of Plant Sciences
Year: 2005  |  Volume: 4  |  Issue: 4  |  Page No.: 374 - 378

Comparison of Obsolete and Modern Varieties in View to Stagnancy in Yield of Cotton (G. hirsutum L.)

Muhammad Iqbal, M. Zafar Iqbal, Rao Sohail Ahmad Khan and Khezir Hayat    

Abstract: A trial was conducted at Cotton Research Station, Multan for three years (2001 to 2003) to compare developmental characteristics, quality traits, yield and its components among thirty two obsolete and modern varieties of Upland cotton (Gossypium hirsutum L). To verify the experimental results, historical data (1986 to 2003) of seed cotton yield, GOT and Staple length of top three high yielding lines was collected from National Coordinated Varietal Trials (NCVT) conducted in Multan region. Significant differences among varieties for node of first fruiting branch, monopodial branches per plant, days taken to first flower and ginning out turn percentage were exhibited. NCVT data showed that among varieties recommended for general cultivation since 1986, variety S-12 showed highest seed cotton yield and ginning outturn (40.5%). The cultivar CIM499 has highest staple length (29.8 mm). From the study, it was concluded that cotton breeders have improved earliness (node of first fruiting branch, monopodial branches per plant, days taken to first flower), lint percentage but improvement in seed cotton yield, yield components and staple length is still needed.

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