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Crop Science Abstract -

Duplicate Linkage of Glandless and Nectariless Genes in Upland Cotton, Gossypium hirsutum L.1


This article in CS

  1. Vol. 8 No. 5, p. 577-580

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  1. David G. Holder2,
  2. Johnie N. Jenkins and
  3. Fowden G Maxwell3



We developed a phenotypic classification system to identify several nectary genotypes in cotton, Gossypium hirsutum L. Duplicate linkage groups were established between the glandless genes, gl2 and gl3, and the nectariless genes, ne1 and ne2. The linkage value for gl2-ne1 in linkage group V in the A genome was 32.23 ± 1.40% crossover units and the linkage value for glones in linkage group IX in the D genome was 38.27 ± 1.40% crossover units. The establishment of these linkages marks these two chromosomes so that three-point linkage tests may be conducted to establish the gene order of the duplicate genes for glandless, nectariless, and withering bract.

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