Author
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Miller, Jerry |
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Submitted to: Crop Science
Publication Type: Peer Reviewed Journal Publication Acceptance Date: 5/31/1997 Publication Date: N/A Citation: N/A Interpretive Summary: A cytoplasmic male sterile genetic stock, cmsHA 89(PEF1), a restorer of the PEF1 cytoplasmic male sterile source, RPEF1, and two nuclear male sterile sunflower genetic stocks, NMS 373 and 377, were developed cooperatively by USDA-ARS and the North Dakota Agricultural Experiment Station. These stocks provide increased genetic diversity in the sunflower cytoplasmic male sterile-restorer system and the genetic male sterility system, and are available for use in sunflower breeding and hybrid development programs. The cms PEF1 is a cytoplasmic male sterility source obtained from INRA in France through the FAO Subnetwork on Sunflower project. This cytoplasm is distinctly different from the PET1 cytoplasm presently utilized in hybrids grown in the U.S. and will decrease the genetic vulnerability of hybrids. RPEF1 is the restorer for the PEF1 cytoplasm and crosses between cmsHA 89(PEF1) and RPEF1 produce completely fertile F1 plants. NMS 373 and NMS 377 will produce approximately 50% green sterile plants and 50% red fertile plants. Male sterility can be maintained by crossing green sterile plants with an anthycyanin-pigmented fertile plant. These lines can be utilized in testcrossing systems, hybridization with new lines, or in crossing with proprietary lines to convert the lines to the nuclear male sterility system. Technical Abstract: A sunflower (Helianthus annuus L.) cytoplasmic male sterile genetic stock, cmsHA 89(PEF1), a restorer of the PEF1 cytoplasmic male sterile source, RPEF1, and two nuclear male sterile genetic stocks, NMS 373 and 377, were developed cooperatively by USDA-ARS and the North Dakota Agricultural Experiment Station. These stocks provide increased genetic diversity in the sunflower cytoplasmic male sterile-restorer system and the genetic male sterility system, and are available for use in sunflower breeding and hybrid development programs. The cms PEF1 is a cytoplasmic male sterility source obtained from INRA in France through the FAO Subnetwork on Sunflower project. This cytoplasm is distinctly different from the PET1 cytoplasm presently utilized in hybrids grown in the U.S. and will decrease the genetic vulnerability of hybrids. RPEF1 is the restorer for the PEF1 cytoplasm and crosses between cmsHA 89(PEF1) and RPEF1 produce completely fertile F1 plants. NMS 373 and NMS 377 will produce approximately 50% green sterile plants and 50% red fertile plants. Male sterility can be maintained by crossing green sterile plants with an anthycyanin-pigmented fertile plant. These lines can be utilized in testcrossing systems, hybridization with new lines, or in crossing with proprietary lines to convert the lines to the nuclear male sterility system. |
