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Duplicate Linkage of Glandless and Nectariless Genes in Upland Cotton, Gossypium hirsutum L. 1
Author(s) -
Holder David G.,
Jenkins Johnie N.,
Maxwell Fowden G
Publication year - 1968
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1968.0011183x000800050021x
Subject(s) - biology , linkage (software) , gossypium hirsutum , gossypium , genetic linkage , bract , gene , genome , genetics , botany , inflorescence
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, gl 2 and gl 3 , and the nectariless genes, ne 1 and ne 2 . The linkage value for gl 2 ‐ne 1 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.