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A Study of Reciprocal Hybrids Between Upland Cotton ( Gossypium hirsutum L.) and Experimental Lines with Cytoplasms from Seven Other Species 1
Author(s) -
Meyer Vesta G.
Publication year - 1973
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/cropsci1973.0011183x001300040015x
Subject(s) - hybrid , biology , gossypium , reciprocal cross , ploidy , gossypium barbadense , cultivar , gossypium hirsutum , cytoplasm , botany , pest analysis , agronomy , genetics , gene
Genetically or cytoplasmically uniform crops may be vulnerable to disastrous pest infestations. Upland cotton ( Gossypium hirsutum L.) cytoplasm is present in most of the cotton cultivars grown commercially in the U.S. However, experimental breeding material has been developed from Upland cotton hybrids with cytoplasms from seven other species of Gossypium . The most uniform and productive progenies within each of these seven cytoplasms were selected for making reciprocal backcrosses to Upland cotton cultivars. Backcrosses with cytoplasm from two tetraploid species (G. barbadense L. and C. tomentosum Nutt.) showed no significant differences from their reciprocal hybrids with Upland cytoplasm, but similar backcrosses with cytoplasm from each of the five diploid species (G. herbaceum L., G. arboreum L., G. anomalum Wawra & Peyr., G. harknessii Brandagee, and G. longicalyx Hutchinson and Lee) differed significantly from their reciprocal hybrids.