Aspects of the sexual reproduction of the Brazilian arnica (Solidago chilensis Meyen var. megapotamica (D.C.) Cabrera - Asteraceae)

• Autor(a) principal: Correia, E.
• Data de Publicação: 1999
• Outros Autores: Ming, Lin Chau [UNESP], Câmara, Francisco Luiz Araújo [UNESP]
• Tipo de documento: Artigo de conferência
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.actahort.org/books/502/502_11.htm; http://hdl.handle.net/11449/65995
• topic: Brazilian arnica; Germination; Goldenrod (Solidago chilensis var. megapotamica); Photoblastism

The species is a very popularly used plant as woundwort. Leaves, top flowers and rhizomes are used. The objective of this work is a contribution to the germination study, photoblastism and more adequate temperature for reproduction of the species. The best temperature for the germination was found to be 20°C and no seeds germinated under continuous darkness, within 14 days; therefore, the seeds are positive photoblastics. The seed germination percentage was low, in relation to the mass of the achene produced, varying from 8,2 to 20,0%. The alternated temperatures of 20° and 30°C did not influence the seed germination and the average of the weight of 100 seeds was 0,026 1 g.