Chromosome Numbers in South American Species of Bothriochloa (Poaceae:Andropogoneae) and their implicances in the evolutionary history of the genus

SCRIVANTI, LIDIA; CAPONIO, IRENE; ANTON, ANA; NORRMANN, GUILLERMO

PLANT BIOLOGY

WILEY-BLACKWELL PUBLISHING, INC

Año: 2009

1435-8603

Abstract: Mitotic chromosome numbers of 14 taxa of Bothriochloa native to Argentine, Brazil and Uruguay were surveyed. Chromosome numbers of B. eurylemma, B. meridionalis Brazil and Uruguay were surveyed. Chromosome numbers of B. eurylemma, B. meridionalis Brazil and Uruguay were surveyed. Chromosome numbers of B. eurylemma, B. meridionalis Brazil and Uruguay were surveyed. Chromosome numbers of B. eurylemma, B. meridionalis Brazil and Uruguay were surveyed. Chromosome numbers of B. eurylemma, B. meridionalis : Mitotic chromosome numbers of 14 taxa of Bothriochloa native to Argentine, Brazil and Uruguay were surveyed. Chromosome numbers of B. eurylemma, B. meridionalisB. eurylemma, B. meridionalis and B. velutina are reported for the first time with 2n = 6x = 60, being this ploidy level the most common among the studied taxa. In addition, new cytotypes were found for B. alta (2n = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), most common among the studied taxa. In addition, new cytotypes were found for B. alta (2n = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), most common among the studied taxa. In addition, new cytotypes were found for B. alta (2n = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), most common among the studied taxa. In addition, new cytotypes were found for B. alta (2n = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), most common among the studied taxa. In addition, new cytotypes were found for B. alta (2n = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), B. velutina are reported for the first time with 2n = 6x = 60, being this ploidy level the most common among the studied taxa. In addition, new cytotypes were found for B. alta (2n = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), B. alta (2n = 60), B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80),B. barbinodis (2n = 60), B. exaristata (2n = 80), B. laguroides var. torreyana (2n = 80), B. longipaniculata (2n = 60 and 80), B. perforata (2n = 60) and B. springfieldii (2n = 60) These numbers differ from those reported in the literature. The evolutionary significance of the results is discussed. Key words: Poaceae, Bothriochloa, South America, chromosome numbers, ploidy levelsPoaceae, Bothriochloa, South America, chromosome numbers, ploidy levels These numbers differ from those reported in the literature. The evolutionary significance of the results is discussed. Key words: Poaceae, Bothriochloa, South America, chromosome numbers, ploidy levelsPoaceae, Bothriochloa, South America, chromosome numbers, ploidy levels These numbers differ from those reported in the literature. The evolutionary significance of the results is discussed. Key words: Poaceae, Bothriochloa, South America, chromosome numbers, ploidy levelsPoaceae, Bothriochloa, South America, chromosome numbers, ploidy levels These numbers differ from those reported in the literature. The evolutionary significance of the results is discussed. Key words: Poaceae, Bothriochloa, South America, chromosome numbers, ploidy levelsPoaceae, Bothriochloa, South America, chromosome numbers, ploidy levels These numbers differ from those reported in the literature. The evolutionary significance of the results is discussed. Key words: Poaceae, Bothriochloa, South America, chromosome numbers, ploidy levelsPoaceae, Bothriochloa, South America, chromosome numbers, ploidy levels (2n = 60 and 80), B. perforata (2n = 60) and B. springfieldii (2n = 60) These numbers differ from those reported in the literature. The evolutionary significance of the results is discussed. Key words: Poaceae, Bothriochloa, South America, chromosome numbers, ploidy levelsPoaceae, Bothriochloa, South America, chromosome numbers, ploidy levels