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    Pima Cotton Genetics

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    Author
    Percy, R. G.
    Turcotte, E. L.
    Issue Date
    1991
    Keywords
    Agriculture -- Arizona
    Cotton -- Arizona
    Cotton -- Pima cotton breeding
    Cotton -- Genetics
    
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    Publisher
    College of Agriculture, University of Arizona (Tucson, AZ)
    Journal
    Cotton: A College of Agriculture Report
    Abstract
    An isozyme study of the diversity and structure of Goss_vpium nii revealed levels of genetic variation within the species which were high for an island endemic. Infraspecific diversity of G. darwinii was observed among populations of the various Galapagos Islands. Evidence of introgression of other Gossypium species into darwinii was noted. An investigation into the effects of altered Pima (G. barbadense) fiber genotypes on interspecific hybrid fiber characteristics indicated that parent genotype could significantly affect hybrid fiber length, strength, uniformity, and micronaire. However, hybrid heterosis for fiber length and micronaire greatly exceeded the influence of parent genotype. Hybrid fiber characteristics were unique, fitting within neither the extra -long staple nor long staple classifications. A conversion program to convert photoperiodic short-day accessions of a Gossvpium barbadense germplasm collection to day neutrality continues.
    Series/Report no.
    370087
    Series P-87
    Collections
    Cotton Report 1991

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