Pollen Viability and Autogamy Fitness in Bauhinia forficata Link (Fabaceae)

Floresta e Ambiente

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ISSN: 2179-8087
Editor Chefe: João Vicente de Figueiredo Latorraca
Início Publicação: 31/12/1993
Periodicidade: Trimestral

Pollen Viability and Autogamy Fitness in Bauhinia forficata Link (Fabaceae)

Ano: 2010 | Volume: 25 | Número: 3
Autores: Luana Camila Capitani; Ana Paula Moreira Rovedder; José Carlos Corrêa da Silva Júnior; Aline Peccatti
Autor Correspondente: Luana Camila Capitani | [email protected]

Palavras-chave: colorimetric method; pollen; TTC

Resumos Cadastrados

Resumo Inglês:

Bauhinia forficata (Fabaceae) occurs in many phytophysiognomies of southern Brazil, however its ecological relevance is not well understood. The present study was developed in the Central Depression of Rio Grande do Sul and aimed to determine variations in pollen viability along flowering, ability to perform autogamy and dye efficiency for the viability test. Pollen viability was determined by colorimetry as well as the ability to perform autogamy by isolating floral buds, being evaluated in eleven matrices. Average pollen viability was 81.43%, with the highest average value obtained with the dye 2,3,5- Triphenyltetrazolium Chloride (TTC) (84.11%). Safranin was not a good indicator at the tested concentration. No correlation was found between pollen viability and flowering time. The species demonstrated an inability to perform autogamy.