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Genetics of the ovule fiberless and foliar glabrous traits in Gossypium arboreum germplasm line PI 529740

Accession PI 529740 from the Gossypium arboreum germplasm collection and characterized by fiberless seeds and glabrous leaves and stems was crossed with two G. arboreum accessions, PI 417890 or PI 529729, to develop F2 populations for genetic analysis. Segregation data indicated that these traits were all conferred by a single recessive gene. More than 800 F2 plants were evaluated across the two populations and no recombinants were observed; thus, it is unknown whether a single gene or tightly linked genes conferred the fiberless and glabrous phenotypes. The fiberless and glabrous traits also segregated independently of corolla color, petal spot, and stem color.

Author(s): John E. Erpelding*and Rickie B. Turley

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