Yield and disease resistance of plantain (Musa spp., AAB group) somaclones in Nigeria |
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| Authors: | AB Nwauzoma A Tenkouano JH Crouch M Pillay D Vuylsteke LA Daniel Kalio |
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| Institution: | (1) Department of Biological Sciences, Rivers State University of Science & Technology, PMB, 5080 Port Harcourt, Nigeria;(2) International Institute of Tropical Agriculture, c/o L.W. Lambourn & Co., Carolyn House, 26 Dingwall Road, Croydon, CR9 3EE, England |
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| Abstract: | This study examined the potential of somaclonal variation for the improvement of plantain. Approximately 500 somaclones each
of ‘Agbagba’ (False Horn plantain) and ‘Bise Egome’ (French plantain) were field evaluated for their agronomic performance
and response to the black Sigatoka disease. The micropropagated populations were independently generated from a number of
suckers from each accession. Significant differences between micropropagated accessions and crop cycles were observed. Differences
between plants derived from suckers of the same accession were also expressed, indicating the chimerical nature of variation
in the traits studied. None of the plants of the micropropagated populations from ‘Bise Egome’ exhibited significantly better
disease tolerance and agronomic performance than the source accession. However,one somaclonal variant of ‘Agbagba’ (‘AO 2B2-2’)
expressed lower susceptibility to the black Sigatoka disease. Compared to ‘Agbagba’, ‘AO 2B2-2’ had a higher bunch weight,
more fruits per bunch with higher average weight, greater average length, and greater average girth. These data clearly show
that, in contrast to previous reports, it is possible to recover superior somaclonal mutants in Musa.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | micropropagation Mycosphaerella fijiensis resistance somaclonal variation yield |
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