Conditioning of Fasciation by Gibberellin and Genotype in Cotton (Gossypium hirsutum L.) |
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Authors: | U. K. Nadjimov I. M. Scott G. N. Fatkhullaeva M. S. Mirakhmedov B. U. Nasirullaev D. A. Musaev |
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Affiliation: | (1) Department of Genetics and Biotechnology, Tashkent State University, 700095 Tashkent, Republic of Uzbekistan, UZ;(2) Institute of Biological Sciences, University of Wales, Aberystwyth, SY23 3DA, United Kingdom, GB |
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Abstract: | The round-leafed mutant cotton line L-501 developed fasciation of the upper stem when field grown in Central Asia. Fasciation co-segregated with the mutant gene for round leaves In. l Fasciation developed at the flowering stage, but removal of floral buds did not prevent fasciation. Fasciation in L-501 could be inhibited by the gibberellin (GA) biosynthesis inhibitor chlorocholine chloride or by fusicoccin. GA3 application in the field induced fasciation in the mutant's parental line L-463, which has five-lobed leaves and does not normally develop fasciation. Fasciation did not develop in either line, even after GA3 treatment, in UK glasshouse conditions. Received June 17, 1998; accepted January 25, 1999 |
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Keywords: | . Fasciation— Gibberellin— Gossypium— Leaf-shape— Mutant |
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