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Chromosome numbers of Thai Rubiaceae
Author(s) -
Puangsomlee Preeya,
Puff Christian
Publication year - 2001
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/j.1756-1051.2001.tb01354.x
Subject(s) - rubiaceae , biology , taxon , genus , ploidy , botany , chromosome , chromosome number , morinda , zoology , karyotype , traditional medicine , genetics , gene , medicine
Chromosome numbers for 14 taxa of indigenous Thai Rubiaceae are presented. They include first counts for 3 genera: Aphaenandra (A. uniflora), Prismatomeris (P. tetrandra subsp. malayana) and Tarennoidea (T. wallichii) ; all show diploidy on x=11. The remaining counts are first counts for species: Argostemma diversifolium, A. neurocalyx and A. pictum, Coptosapelta flavenscens, Gardenia saxtilis, Ixora sp., Morinda sp., Mussaenda sanderiana, Oxyceros horridus, Rothmannia wittii (first count for an Asiatic species of the genus) (all diploid on x=11), and Canthium sp. (tetraploid on x=11). The poor state of karyological knowledge of indigenous Thai Rubiaceae is discussed, and a table including all relevant known chromosome counts is presented. Chromosome data are only known for 38 genera (ca. 41% of all Rubiaceae genera occurring in Thailand); chromosome numbers are often only available for one or few taxa of each genus [in sum, for only about 50 (or for roughly 10% of all) taxa]. Of only 14 genera (ca. 15%), chromosomes were counted from Thai material (for the others, counts originate from elsewhere, i.e. refer to more widely distributed taxa also extending into Thailand).