Biologia da reprodução de especies de Helicteres: H. Brevispira, H. Ovattae H. Sacarolha
DISSERTAÇÃO
Português
T/UNICAMP F844b
Campinas, SP : [s.n.], 1989.
144f.
Orientador : Neusa Taroda Ranga
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia
Resumo: O presente trabalho analisa diversos aspectos da biologia reprodutiva de três espécies do gênero Helicteres, H. Brevispira, H. Ovata e H. Sacarolha. Para tanto, incluímos neste estudo testes de polinização controlada, observação do crescimento do tubo polínico, estimativa da taxa de aborto e...
Resumo: O presente trabalho analisa diversos aspectos da biologia reprodutiva de três espécies do gênero Helicteres, H. Brevispira, H. Ovata e H. Sacarolha. Para tanto, incluímos neste estudo testes de polinização controlada, observação do crescimento do tubo polínico, estimativa da taxa de aborto e da razão p61en
vul0. Fizemos, também, estudos da biologia da polinização, nos quais observamos as características florais relacionadas à síndrome da polinização de cada espécie ao seu polinizador, e destacamos a importância dessas características na eficiência do mecanismo de polinização. Identificamos algumas...
vul0. Fizemos, também, estudos da biologia da polinização, nos quais observamos as características florais relacionadas à síndrome da polinização de cada espécie ao seu polinizador, e destacamos a importância dessas características na eficiência do mecanismo de polinização. Identificamos algumas espécies de polinizadores de H. Brevispira e R. Sacarolha e discutimos seus padrões de forrageamento e a importância destes no sistema reprodutivo da espécie. Obtivemos a quantidade e a concentração de açúcares do néctar de cada espécie. Acompanhamos, também, o comportamento fenológico destas três espécies. Cada espécie ocorre em um tipo diferente de vegetação, ou seja, H. Ovata é encontrada em beira de mata ou no interior de mata em estágio intermediário de sucessão, R. Sacarolha ocorre em cerrado aberto e R. Brevispira na beira de mata ciliar transição para cerrado. O comportamento fenologico destas espécies, aparentemente, está ligado à sazonal idade de cada vegetação... Observação: O resumo, na íntegra, poderá ser visualizado no texto completo da tese digital
Abstract: The reproductive biology of three species of the Helicteres (H. brevispira, H. ovata e H. sacarolha) was studied in its various aspects. Thus, experiment of controlled pollination was carried out, observation of pollen-tube development in the style and the abortion rate and the...
Abstract: The reproductive biology of three species of the Helicteres (H. brevispira, H. ovata e H. sacarolha) was studied in its various aspects. Thus, experiment of controlled pollination was carried out, observation of pollen-tube development in the style and the abortion rate and the pollen/ovule ratios evalluated. The floral biology of these species was also studied with emphasis on the adaptative floral caracteristics and its relevance to the efficiency of the pollination mechanism of each species. Nectar production was estimated for each taxon. The fenology of these three Helicteres species was observed for, at least, one year. The fenological pattern of these species is probally related to the sazonality of the type of vegetation where they occur. H. Ovata grows at the edge of forest or in forest at an intermediate stage of successlon, H. Sacarolha is found in open "cerrado" while H. Brevispira at the edge of gallery forest transition to "cerrado"... Note: The complete abstract is available with the full electronic digital thesis or dissertations
Abstract: The reproductive biology of three species of the Helicteres (H. brevispira, H. ovata e H. sacarolha) was studied in its various aspects. Thus, experiment of controlled pollination was carried out, observation of pollen-tube development in the style and the abortion rate and the...
Abstract: The reproductive biology of three species of the Helicteres (H. brevispira, H. ovata e H. sacarolha) was studied in its various aspects. Thus, experiment of controlled pollination was carried out, observation of pollen-tube development in the style and the abortion rate and the pollen/ovule ratios evalluated. The floral biology of these species was also studied with emphasis on the adaptative floral caracteristics and its relevance to the efficiency of the pollination mechanism of each species. Nectar production was estimated for each taxon. The fenology of these three Helicteres species was observed for, at least, one year. The fenological pattern of these species is probally related to the sazonality of the type of vegetation where they occur. H. Ovata grows at the edge of forest or in forest at an intermediate stage of successlon, H. Sacarolha is found in open "cerrado" while H. Brevispira at the edge of gallery forest transition to "cerrado"... Note: The complete abstract is available with the full electronic digital thesis or dissertations
Abstract: The reproductive biology of three species of the Helicteres (H. brevispira, H. ovata e H. sacarolha) was studied in its various aspects. Thus, experiment of controlled pollination was carried out, observation of pollen-tube development in the style and the abortion rate and the...
Abstract: The reproductive biology of three species of the Helicteres (H. brevispira, H. ovata e H. sacarolha) was studied in its various aspects. Thus, experiment of controlled pollination was carried out, observation of pollen-tube development in the style and the abortion rate and the pollen/ovule ratios evalluated. The floral biology of these species was also studied with emphasis on the adaptative floral caracteristics and its relevance to the efficiency of the pollination mechanism of each species. Nectar production was estimated for each taxon. The fenology of these three Helicteres species was observed for, at least, one year. The fenological pattern of these species is probally related to the sazonality of the type of vegetation where they occur. H. Ovata grows at the edge of forest or in forest at an intermediate stage of successlon, H. Sacarolha is found in open "cerrado" while H. Brevispira at the edge of gallery forest transition to "cerrado"... Note: The complete abstract is available with the full electronic digital thesis or dissertations
Biologia da reprodução de especies de Helicteres: H. Brevispira, H. Ovattae H. Sacarolha
Biologia da reprodução de especies de Helicteres: H. Brevispira, H. Ovattae H. Sacarolha
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