Estudios cariológicos en compositae. VII

Meiotic and/or mitotic chromosome numbers were determined and observations on meiotic behavior were made in 104 accessions belonging to 75 species and 32 genera distributed in 10 tribes of the Asteraceae. One genus (Picrosia), 21 species and 2 varietes are investigated cytologically for the first ti...

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Autor principal: Wulff, Arturo Federico
Publicado: 1996
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00116793_v34_n_p213_Wulff
http://hdl.handle.net/20.500.12110/paper_00116793_v34_n_p213_Wulff
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spelling paper:paper_00116793_v34_n_p213_Wulff2023-06-08T14:35:03Z Estudios cariológicos en compositae. VII Wulff, Arturo Federico Meiotic and/or mitotic chromosome numbers were determined and observations on meiotic behavior were made in 104 accessions belonging to 75 species and 32 genera distributed in 10 tribes of the Asteraceae. One genus (Picrosia), 21 species and 2 varietes are investigated cytologically for the first time. These are as follows, tribe Mutisieae: Chaptalia graminifolia (Dus.) Cabrera and Ch. pilloselloides (Vahl.) Baker (2n = ca. 48); tribe Cichorieae: Picrosia longifolia Don (n = 7 II); tribe Astereae: Baccharis effusa Griseb. (n = 9 II), B. flabellata Hook. et Arn. (n = 9 II), B. flabellata var. argentina (Heer.) Ariza (n = 9 II), B. rhexioides H. B. K. (n = 9 II), B. tucumanensis Hook. et Arn. (n = 9 II), Grindelia buphthalmoides DC. (2n = 12); tribe Senecioneae: Senecio flagellisectus Griseb. (n = 20 II), S. grisebachii Baker var. grisebachii Baker (n = 20 II), S. lorentzii Griseb. (n = 20 II); tribe Heliantheae: Calea clematidea Baker (n = 19 II), Cosmos marginatus Klatt (n = 24 II), Spilanthes alpestris Griseb. (n = ca. 14 II), Tridax paraguayensis Kuntze (n = 18 II); tribe Eupatorieae: Eupatorium buniifolium Hook. et Arn. (2n = 20 + 2B), E. lorentzii Hieron. (n = ca. 17 II), E. grosidentatum Hieron. (n = 10 II), Ophryosporus macrodon Griseb. (n = 10 II), Pterocaulon lanatum O. K. (n = 11 II), Stevia aff. effusa Hieron. (n = 11 II) and S. maimarensis (Hieron.) Cabrera (n = 11 II). Different chromosome numbers to those reported previously in the literature were found for Aspilia montevidensis (Spreng.) Kuntze var. setosa (Griseb.) Cabrera (n = 11 II), Liabum polymnoides R.E. Fries (n = 15 II) and Eupatorium saltense Hieron. (n = ca. 26 II) The karyotypes of Hieracium tandilense Sleumer, Baccharis effusa Griseb., B. spicata (Lam.) Baillon, Eupatorium buniifolium Hook. et Arn. and Stevia satureaiefolia (Lam.) Schultz-Bip. are described for the first time. The significance of some of the results in relation to taxonomical and evolutionary problems is discussed. Fil:Wulff, A.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1996 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00116793_v34_n_p213_Wulff http://hdl.handle.net/20.500.12110/paper_00116793_v34_n_p213_Wulff
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Meiotic and/or mitotic chromosome numbers were determined and observations on meiotic behavior were made in 104 accessions belonging to 75 species and 32 genera distributed in 10 tribes of the Asteraceae. One genus (Picrosia), 21 species and 2 varietes are investigated cytologically for the first time. These are as follows, tribe Mutisieae: Chaptalia graminifolia (Dus.) Cabrera and Ch. pilloselloides (Vahl.) Baker (2n = ca. 48); tribe Cichorieae: Picrosia longifolia Don (n = 7 II); tribe Astereae: Baccharis effusa Griseb. (n = 9 II), B. flabellata Hook. et Arn. (n = 9 II), B. flabellata var. argentina (Heer.) Ariza (n = 9 II), B. rhexioides H. B. K. (n = 9 II), B. tucumanensis Hook. et Arn. (n = 9 II), Grindelia buphthalmoides DC. (2n = 12); tribe Senecioneae: Senecio flagellisectus Griseb. (n = 20 II), S. grisebachii Baker var. grisebachii Baker (n = 20 II), S. lorentzii Griseb. (n = 20 II); tribe Heliantheae: Calea clematidea Baker (n = 19 II), Cosmos marginatus Klatt (n = 24 II), Spilanthes alpestris Griseb. (n = ca. 14 II), Tridax paraguayensis Kuntze (n = 18 II); tribe Eupatorieae: Eupatorium buniifolium Hook. et Arn. (2n = 20 + 2B), E. lorentzii Hieron. (n = ca. 17 II), E. grosidentatum Hieron. (n = 10 II), Ophryosporus macrodon Griseb. (n = 10 II), Pterocaulon lanatum O. K. (n = 11 II), Stevia aff. effusa Hieron. (n = 11 II) and S. maimarensis (Hieron.) Cabrera (n = 11 II). Different chromosome numbers to those reported previously in the literature were found for Aspilia montevidensis (Spreng.) Kuntze var. setosa (Griseb.) Cabrera (n = 11 II), Liabum polymnoides R.E. Fries (n = 15 II) and Eupatorium saltense Hieron. (n = ca. 26 II) The karyotypes of Hieracium tandilense Sleumer, Baccharis effusa Griseb., B. spicata (Lam.) Baillon, Eupatorium buniifolium Hook. et Arn. and Stevia satureaiefolia (Lam.) Schultz-Bip. are described for the first time. The significance of some of the results in relation to taxonomical and evolutionary problems is discussed.
author Wulff, Arturo Federico
spellingShingle Wulff, Arturo Federico
Estudios cariológicos en compositae. VII
author_facet Wulff, Arturo Federico
author_sort Wulff, Arturo Federico
title Estudios cariológicos en compositae. VII
title_short Estudios cariológicos en compositae. VII
title_full Estudios cariológicos en compositae. VII
title_fullStr Estudios cariológicos en compositae. VII
title_full_unstemmed Estudios cariológicos en compositae. VII
title_sort estudios cariológicos en compositae. vii
publishDate 1996
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00116793_v34_n_p213_Wulff
http://hdl.handle.net/20.500.12110/paper_00116793_v34_n_p213_Wulff
work_keys_str_mv AT wulffarturofederico estudioscariologicosencompositaevii
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