Summary
A low frequency of pollen fertility restorers for cytoplasmic male sterility was found within a large number of sunflower inbred lines of varied genetic and geographic backgrounds. The only source of cultivated sunflowers carrying a single dominant gene for pollen fertility restoration was the inbred line MZ-1398, selected through eight generations of selfing from the local sunflower population Mezehedeshy. The restorer line MZ-1398 has good agronomic characteristics and a high combining ability.
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Vranceanu, V.A., Stoenescu, F.M. Pollen fertility restorer gene from cultivated sunflower (Helianthus annuus L.). Euphytica 20, 536–541 (1971). https://doi.org/10.1007/BF00034209
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DOI: https://doi.org/10.1007/BF00034209