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An Example of Increased Recombination in Gossypium 1
Author(s) -
Lee Joshua A.
Publication year - 1972
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/cropsci1972.0011183x001200010040x
Subject(s) - biology , recombination , gossypium hirsutum , gossypium , ploidy , genetics , chromosome , gene , botany
A chromosome bearing a marked segment was transferred from the diploid species Gossypium raimondii Ulb. to the teraploid species, Gossypium hirsutum L. Upon mating with the homeologous G. hirsutum chromosome, the segment gave 2.4% recombination for the two markers used. When the genes were later recombined from the repulsion phase, the recombination value increased to an average of 20.2%. This increase was attributed to accelerated recombination in homologously paired segments that appeared in the intercalary region following initial breakage.