Cross Compatibility of Cultivars of Gossypium Hirsutum L. and Feral Gossypium Barbadense L. in the Southern Highlands of Tanzania

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dc.contributor.authorShilla, O.
dc.contributor.authorHauser, T. P.
dc.contributor.authorTibazarwa, Flora I.
dc.date.accessioned2016-09-21T16:53:14Z
dc.date.available2016-09-21T16:53:14Z
dc.date.issued2012-12
dc.description.abstractCotton is the second most important cash crop contributing about 15% to the annual foreign earning in Tanzania and is purely from Gossypium hirsutum L. cultivars. Gossypium barbadense L., a textile source in other parts of the world occurs as a feral perennial of ornamental and medicinal value in home gardens. G. barbadense L. is a natural host of the red bollworm, a destructive pest to cotton. The Southern Highlands (SH) of Tanzania have been quarantined from cotton production to control spread of the red bollworm to other growing areas. Transgenic cotton expressing the delta-endotoxin genes from Bacillus thuringiensis (Bt) offers an alternative control to the pest and reduced dependence on insecticide. Gene flow between wild or valued feral relatives and transgenic crops is a biosafety concern should transgene escape result in resistance development and contamination of germplasm. Potential gene flow between feral G. barbadense (including accessions Gb1 and Gb2) from the SH and G. hirsutum cultivars was assessed using controlled hybridization. The crosses produced fertile F1 but intraspecific seeds from G. barbadense did not germinate. G. barbadense is more likely to receive than donate genes implying development of pest resistance if introgressed filial generations express the Bt product.en_US
dc.identifier.citationShilla, O. and Tibazarwa, F.I., 2012. Cross compatibility of cultivars of Gossypium hirsutum L. and feral Gossypium barbadense L. in the Southern Highlands of Tanzania. African Journal of Agricultural Research, 7(47), pp.6289-6296.en_US
dc.identifier.doi10.5897/AJAR11.1688
dc.identifier.issn1991-637X
dc.identifier.urihttp://hdl.handle.net/20.500.11810/4084
dc.language.isoenen_US
dc.subjectHybridizationen_US
dc.subjectGene flowen_US
dc.subjectMorphological markersen_US
dc.subjectFeral cottonen_US
dc.subjectBollwormsen_US
dc.subjectBacillus thuringiensis (Bt) cottonen_US
dc.titleCross Compatibility of Cultivars of Gossypium Hirsutum L. and Feral Gossypium Barbadense L. in the Southern Highlands of Tanzaniaen_US
dc.typeJournal Article, Peer Revieweden_US
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