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Inheritance of Pollen Fertility Restoration in Cytoplasmic Male‐Sterile Upland Cotton 1
Author(s) -
Weaver David B.,
Weaver J. B.
Publication year - 1977
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/cropsci1977.0011183x001700040003x
Subject(s) - biology , pollen , fertility , hybrid , cytoplasmic male sterility , lint , hybrid seed , backcrossing , botany , agronomy , inheritance (genetic algorithm) , sterility , gene , genetics , population , demography , sociology
Information regarding the inheritance of fertility restoration in cytoplasmic male‐sterile cotton will be a valuable tool in commercial production of F 1 hybrid cotton seed. F 1 , F 2 , and testcross populations were planted in 1975 at two locations to determine the inheritance of the fertility‐restoring factor in cytoplasmic male‐sterile Upland cotton ( Gossypium hirsutum L.). Fertility restoration in cytoplasmic male‐sterile cotton is controlled by a single gene probably expressing partial dominance. Either some of the F 2 plants were misclassifled or some minor modifying factor(s) was slightly deleterious to the growth and development of fertile plants in segregating populations. G. barbadense L. apparently has a factor that enhances pollen production in the F 1 hybrid. A breeding program is underway to transfer this factor(s) into Upland stocks. Fertile plants in segregating F 2 populations showed a significantly higher lint percentage than corresponding sterile plants. Higher micronaire was found for sterile plants than fertile plants.