%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture non répertoriées par l'AERES
%A Renno, Jean-François
%A Schmelzer, G.
%A De Jong, J.H.
%T Variation and geographical distribution of ploidy levels in Pennisetum section Brevivalvula (Poaceae) in Burkina Faso, Benin and southern Niger
%D 1995
%L fdi:010012144
%G ENG
%J Plant Systematics and Evolution
%@ 0378-2697
%K RESSOURCES VEGETALES SPONTANEES ; POLYPLOIDE ; APOMIXIE ; REPARTITION GEOGRAPHIQUE
%K COMPLEXE D'ESPECES
%K BURKINA FASO ; BENIN
%K NIGER SUD
%P 89-100
%R 10.1007/BF00985108
%U https://www.documentation.ird.fr/hor/fdi:010012144
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_6/b_fdi_47-48/010012144.pdf
%V 198
%W Horizon (IRD)
%X #Pennisetum$ sect. #Brevivalvula$ is a species complex characterized by polyploidy and apoximis. Ploidy level was assessed by DAPI-flow cytometry for 304 plants of the section, originating from Burkina Faso, Benin and southern Niger. The results were confirmed for 54 plants based on chromosome counts. The samples show four euploidy levels (with x = 9) distributed among five species : #P. hordeoides$ (2n = 36, 54), #P. pedicellatum$ (2n = 36, 45, 54), #P. polystachion$ (2n = 18, 36, 45, 54), #P. setosum$ (2n = 54), and #P. subangustum$ (2n = 18, 36, 54). The geographical distribution of these ploidy levels seems related to major vegetation zones present in Africa. Diploid populations of #P. polystachion$ and #P. subangustum$ were found in the Banfora area, in Burkina Faso. (Résumé d'auteur)
%$ 076AMEPLA06