Molecular and genetic characterization of Nicotiana glutinosa L. chromosome segments in tobacco mosaic virus-resistant tobacco accessions.

Crop Science,  November, 2005  by Levin, J.S.; Lewis, R.S.; Milla, S.R.

Tags: alien, chromosome, gene, Molecular Inc., tobacco

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Tobacco mosaic virus (TMV)-resistant flue-cured tobacco (Nicotiana tabacum L.) cultivars have been developed using the N gene derived from N. glutinosa L. Their adoption has been low, however, because of unfavorable linkage drag effects. Strategies to overcome this problem might include pursuit of alternative introgression events and/or use of molecular markers for selection against deleterious alien chromatin.

Previous workers demonstrated the presence of a TMV-resistance mechanism on more than one chromosome of the tobacco genome. The objectives of this research were to determine the ...

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