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Results of linkage analyses of cotton performed at College Station, Texas are presented, and linkage information reported by other workers is summarized. The mutants withering bract, accessory involucre, abnormal palisades, Ragged Leaf, round leaf, Red Dwarf, male-sterile-1, male-sterile-2, Male-sterile-4, and Ligon Lintless were tested for linkage with several marker loci and in various combinations among themselves.
Ragged Leaf and round leaf were found to be linked (R.C. = 32 %), and thus form a new linkage group, number X. Data are presented to document the simple dominant inheritance of Ligon Lintless; the symbol Li is assigned to the mutant allele.
Key Words: Linkage Group X Ligon Lintless inheritance
2 Research Geneticist, Plant Science Research Division, Agricultural Research Service, U. S. Department of Agriculture, College Station, Texas 77843.
Received for publication June 18, 1971.
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