南美洲两型草属（禾本科：黍族）物种的染色体数目和该属的进化历史。

Chromosome number in South American species of Bothriochloa (Poaceae: Andropogoneae) and evolutionary history of the genus.

机构信息

Instituto Multidisciplinario de Biología Vegetal, Córdoba, Argentina.

出版信息

Plant Biol (Stuttg). 2010 Nov;12(6):910-6. doi: 10.1111/j.1438-8677.2009.00314.x.

DOI:10.1111/j.1438-8677.2009.00314.x

Abstract

Mitotic chromosome number of 14 taxa of Bothriochloa native to Argentina, Brazil and Uruguay were surveyed. Chromosome numbers of B. eurylemma, B. meridionalis and B. velutina are reported for the first time, with 2n = 6x = 60, and this ploidy level is 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), B. longipaniculata (2n = 60 and 80), B. perforata (2n = 60) and B. springfieldii (2n = 60). These numbers differ from those reported in the literature.

摘要

对原产于阿根廷、巴西和乌拉圭的 14 种双花草属植物的有丝分裂染色体数目进行了调查。首次报道了 B. eurylemma、B. meridionalis 和 B. velutina 的染色体数目，其 2n = 6x = 60，这种倍性水平在研究的分类群中最为常见。此外，还发现了 B. alta（2n = 60）、B. barbinodis（2n = 60）、B. exaristata（2n = 80）、B. laguroides var. torreyana（2n = 80）、B. longipaniculata（2n = 60 和 80）、B. perforata（2n = 60）和 B. springfieldii（2n = 60）的新细胞型。这些数字与文献中的报道不同。