Chromosome number and microsporogenesis in Paspalum maritimum (Caespitosa Group; Gramineae).

AUTOR(ES)
FONTE

Brazilian Archives of Biology and Technology

DATA DE PUBLICAÇÃO

2011

RESUMO

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

ASSUNTO(S)

paspalum maritimum chromosome number meiotic behavior pollen fertility

ACESSO AO ARTIGO

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