Seed germination of Brazilian Aldama species (Asteraceae)

Autor(es)

Bombo, Mine Bertolosi ^[1] ; de Oliveira, Tuane Santos ^[1] ; Appezzato-da-Gloria, Beatriz ^[1] ; da Luz Coelho Novembre, Ana Dionisia ^[2]

Afiliação do(s) autor(es)

^[1] USP ESALQ, Dept Ciencias Biol, Caixa Postal 9, BR-13418900 Piracicaba, SP - Brazil

^[2] USP ESALQ, Dept Prod Vegetal, BR-13418900 Piracicaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF SEED SCIENCE; v. 37, n. 3, p. 185-191, JUL-SEP 2015.
• Citações Web of Science: 0

Resumo

Brazilian samples from the Aldama genus (Asteraceae) could not propagate vegetatively despite their thickened underground system; thus, this study on sexual propagation is critical given the lack of data on reproductive strategies for such species. The aim for this research was to assess the optimal temperature for Aldama arenaria, A. filifolia, A. linearifolia, A. robusta and A. trichophylla seed germination. Seed germination was evaluated at the constant temperatures 20, 25 and 30 degrees C and the alternating temperatures 15-35, 20-30 and 20-35 degrees C with an 8-h daily photoperiod, using fluorescent-lamp. The ungerminated seeds were evaluated for embryo viability. The A. filifolia seed health was also evaluated. The optimal temperatures for germination are 20 and 25 degrees C for Aldama arenaria, A. filifolia, A. robusta and A. trichophylla seeds and 20 degrees C for A. linearifolia seeds. The alternating temperature 15-35 degrees C is not recommended for germinating seeds from these species. The six fungi taxa studied herein did not affect A. filifolia seed germination. (AU)

• Processo FAPESP: 10/01931-0 - Anatomia e o óleo essencial de três espécies de Viguiera (Asteraceae - Heliantheae)
• Beneficiário: Aline Bertolosi Bombo
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 10/51454-3 - Estudos morfoanatômicos, metabolômicos e moleculares como subsídios à sistemática de espécies de Asteraceae e acesso ao seu potencial farmacológico
• Beneficiário: Beatriz Appezzato da Glória
• Modalidade de apoio: Auxílio à Pesquisa - Temático