Summary
A new cms source, ANN-5, was found in wild Helianthus annuus. This source showed high stability under different conditions in 1991 and 1992. All progenies from crosses of this source with several stable B-lines and restorer lines, which are homozygous for the gene which restores Leclercq's source of male sterility, were completely male sterile. Flower contained pistils and atrophied stamens. The cytological analysis showed that pollen mother cell degeneration took place in a premeiotic stage.
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Marinković, R., Miller, J.F. A new cytoplasmic male sterility source from wild Helianthus annuus . Euphytica 82, 39–42 (1995). https://doi.org/10.1007/BF00028708
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DOI: https://doi.org/10.1007/BF00028708