publication . Article . Other literature type . 1995

Variation and geographical distribution of ploidy levels in Pennisetum section Brevivalvula (Poaceae) in Burkina Faso, Benin and southern Niger.

J. F. Renno; J. H. de Jong; G. H. Schmelzer;
Open Access English
  • Published: 01 Jan 1995 Journal: Plant Systematics and Evolution, volume 198, pages 89-100 (issn: 0378-2697, Copyright policy)
  • Country: France
Abstract
#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...
Subjects
free text keywords: Laboratorium voor Erfelijkheidsleer, EPS, Laboratory of Genetics, RESSOURCES VEGETALES SPONTANEES, POLYPLOIDE, APOMIXIE, REPARTITION GEOGRAPHIQUE, COMPLEXE D'ESPECES, Plant Science, Ecology, Evolution, Behavior and Systematics, Plant ecology, Botany, Vegetation, Pennisetum, biology.organism_classification, biology, Species complex, Apomixis, Ploidy, Poaceae, Chromosome
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