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NEW INTERGENOMIC HYBRIDS AMONG SOME AFRICAN DIPLOID SPECIES OF HIBISCUS SECT. FURCARIA
Author(s) -
Menzel Margaret Y.,
Richmond Kenneth L.,
Contolini Carol S.,
Huang Peikun
Publication year - 1986
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.1537-2197.1986.tb08533.x
Subject(s) - biology , ploidy , hybrid , genome , genetics , chromosome , pollen , hibiscus , botany , gene
Chromosome pairing was examined at Metaphase 1 in F 1 hybrids between Hibiscus surattensis L. (B genome) and three other diploid species, H. hiernianus Exell, H. mastersianus Hiern, and H. mechowii Garcke. The low level of chromosome association in all three types of hybrids indicated that the pollen parent of each hybrid contributed a genome that was meiotically nonhomologous with B. Earlier studies had shown that H. mastersianus and H. hiernianus have similar genomes that are nonhomologous with the genome of H. mechowii. Thus, these four African diploids with overlapping ranges encompass three different genome groups. Provisional genome designations were assigned as follows: H. hiernianus, X hie ; H. mastersianus, X mas ; H. mechowii, Y mec .