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CHROMOSOME NUMBERS AND SATELLITE CHROMOSOME MORPHOLOGY IN ASTER AND LASALLEA
Author(s) -
Semple John C.,
Brouillet Luc
Publication year - 1980
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.1537-2197.1980.tb07734.x
Subject(s) - advanced spaceborne thermal emission and reflection radiometer , biology , interspecific hybrids , chromosome , interspecific competition , satellite , chromosome number , hybrid , centromere , botany , genus , zoology , karyotype , genetics , gene , engineering , aerospace engineering
Chromosome numbers were determined from more than 241 populations of 46 species and five interspecific hybrids of Aster L. (X = 9, 8, 7) and from 48 populations of nine species and one interspecific hybrid of the redefined genus Lasallea Greene (X = 5). Seventeen first reports are listed for Aster and four for Lasallea . The Nucleolar Organizer Region chromosome of the species of Aster examined had a satellite either equal to or longer than the short arm region, while all nine species of Lasallea had a very small satellite. The retention of the species of subg. Oxytripolium (X = 5) in Aster was found questionable on cytological grounds, and it was done so for nomenclatural reasons only.