Sexual systems of restinga wood species in the NPPR Nossa Senhora do Outeiro de Maracaípe, at Ipojuca - PE - Brazil. / Sistemas sexuais de espécie lenhosa de Restinga da RPPN Nossa Senhora do Outeiro de Maracaipe, em Ipojuca PE.

Marcio Geyton Sousa Nóbrega

Sexual systems of restinga wood species in the NPPR Nossa Senhora do Outeiro de Maracaípe, at Ipojuca - PE - Brazil. / Sistemas sexuais de espécie lenhosa de Restinga da RPPN Nossa Senhora do Outeiro de Maracaipe, em Ipojuca PE.

AUTOR(ES)

Marcio Geyton Sousa Nóbrega

DATA DE PUBLICAÇÃO

2009

RESUMO

The sexual system is an essential factor of genetic variability between vegetal species, which knowledge is essential in conservational and improvement plans. The sexual systems of woody species of resting was determined by pollen and ovule presence and viability in flowers produced in loco, by herbarium exsiccates observation and by literature review. The hermaphrodites species proportion was 79.2% and the dioecious species proportion was 20.8%. Those results are in conformity with the predominant tendency of more high frequency of hermaphrodites in angiospermies species on tropical forests and more high frequency of angiosperms dioecious species on resting vegetation. Although dioecious species can to have ecological and reproductive characteristics which generally maximize the reproduction efficiency, are more subject to negative effect of anthropization, requiring special care on genetic diversity conservation.

ASSUNTO(S)

sexual systems biologia reprodutiva sistemas sexuais silvicultura ipojuca (pe) ciências florestais recursos florestais e engenharia florestal restinga

ACESSO AO ARTIGO

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