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THE CYTOLOGY AND PHYLOGENETICS OF THE DIPLOID SPECIES OF GOSSYPIUM
Author(s) -
Phillips Lyle L.
Publication year - 1966
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1966.tb07343.x
Subject(s) - genome , biology , ploidy , gossypium , genetics , genome evolution , karyotype , hybrid , chromosome , evolutionary biology , botany , gene
Meiotic chromosome behavior of 11 inter‐genomic hybrids of Gossypium (2 n = 26) were investigated. Per cell univalent frequencies at meiotic metaphase I in these hybrids were: A genome × Cgenome— G. herbaceum × sturtianum , 10.53; G . herbaceum × australe , 18.05. A genome × E genome— G. smnalense × arboreum , 21.82. B genome × C genome— G. anomalum × sturtianum , 9.23; G. anomalum × australe , 13.11. B genome × D genome— G. anomalum × klotzschianum , 17.45; G. anomalum × raimondii , 18.83. C genome × D genome— G. robinsonii × davidsonii , 12.77; G. sturtianum ( armourianum × thurberi ), 8.63. C genome × E genome— G. somalense × australe , 23.78; G. somalense × bickii , 25.58. Trivalent and quadrivalent frequencies were relatively high for those hybrids involving a C genome species, indicating that a reciprocal translocation differentiates the C genome from the A, B, D, and E genomes. The results of this study and the data of similar studies cited from the literature on Gossypium cytogenetics are discussed relative to the phylogenetics and evolution of the major (genome) groups of Gossypium and their constituent taxa.