Reversion of Texas male-sterile cytoplasm maize [Zea mays] in culture to give fertile, T-toxin resistant plants

Plants carrying Texas male-sterile (Tms) cytoplasm are normally sensitive to Drechslera maydis T-toxin. Tissue cultures were initiated from immature embryos of maize carrying Tms-cytoplasm, and plants were regenerated after selection for resistance to T-toxin. Fertile, T-toxin resistant plants were...

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Bibliographic Details
Published in:Theoretical and applied genetics 1980-07, Vol.58 (4), p.55-58
Main Authors: Brettell, R I, Thomas, E, Ingram, D S
Format: Article
Language:English
Subjects:
Zea mays
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Summary:Plants carrying Texas male-sterile (Tms) cytoplasm are normally sensitive to Drechslera maydis T-toxin. Tissue cultures were initiated from immature embryos of maize carrying Tms-cytoplasm, and plants were regenerated after selection for resistance to T-toxin. Fertile, T-toxin resistant plants were obtained from the unselected control cultures as well as from the selected material. In addition, one regenerant from an unselected culture was fertile and T-toxin sensitive. The progeny of the regenerants showed the phenotype of the female parent with respect to pollen-fertility, and T-toxin resistance. The data are consistent with the heritable changes observed being the result of the expression of an altered mitochondrial genome.
ISSN:0040-5752
1432-2242
DOI:10.1007/BF00277764