Chromosome number and microsporogenesis in Paspalum maritimum (caespitosa group; gramineae)

Brazilian Archives of Biology and Technology

Eleniza De Victor Adamowski²  Maria Suely Pagliarini²  Luiz Alberto Rocha Batista¹ 

[1] ,State University of Maringá Department of Cell Biology and Genetics Maringá Paraná ,Brazil

关键词: Paspalum maritimum;    Chromosome number;    Meiotic behavior;    Pollen fertility;   

DOI  :  10.1590/S1516-89132000000300009

来源: SciELO

【 摘 要 】

Despite of economic importance of the genus Paspalum, little or no cytologic information is available for many species. This is the first report about chromosome number and meiotic behavior for P. maritimum. The three accessions collected in Amapá State (North Region of Brazil) were tetraploid (2n=4x=40) with the chromosomes associating predominantly as bivalents. The low frequency of multivalents suggested that they were segmental allotetraploids. All accessions showed a low rate of meiotic irregularities, and as a consequence the pollen fertility was high. The results suggested that these accessions presented potential for use in a hybridization program.

【 授权许可】

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