%0 Journal Article
%T Chromosome studies of some Vernonia species (Asteraceae)
%A Dematteis
%A Massimiliano
%J Genetics and Molecular Biology
%D 1998
%I Sociedade Brasileira de Gen¨¦tica
%R 10.1590/S1415-47571998000300016
%X chromosomes of 12 vernonia species (asteraceae) from south america were studied. first counts were reported for: v. alpestris gardn. (n = 17), v. chalybaea mart. ex dc. (2n = 32), v. cotoneaster less. (2n = 30), v. fruticulosa mart. ex dc. (n = 16) and v. lithospermifolia hieron. (n = 10, 2n = 20). furthermore, in v. aurea mart. ex dc. (2n = 32), v. mollissima d. don (n = 32) and v. saltensis hieron. (2n = 64) numbers different from those reported in the literature were found. karyotypes were described for some species. v. aurea contains 24m + 8sm chromosomes, v. chalybaea contains 22m + 10sm chromosomes, v. cincta griseb. 36m + 16sm + 8st and v. cotoneaster 18m + 12sm. the basic chromosome numbers x = 10, 14, 15, 16 and 17 were confirmed for south american vernonia species. the results are discussed in relation to previous chromosome studies for the genus.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1415-47571998000300016&lng=en&nrm=iso&tlng=en