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| Format: | Artículo científico |
| Language: | en |
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Universidade Federal de Santa Maria
2010
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| Online Access: | https://www.redalyc.org/articulo.oa?id=467546357003 |
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Table of Contents:
- Meiotic behavior and pollen viability of Aloysia gratissima and Aloysia triphylla (Verbenaceae) Carmine Aparecida Lenz Hister Solange Bosio Tedesco Antonio Carlos Ferreira da Silva Thais Scotti do Canto-Dorow Estudios Ambientales pollen meiosis meiotic index Medicinal plant chromosome number The use of medicinal plants for the treatment of diseases that attack human beings has been a practice for centuries and it is seen as one of the main therapeutic resource in many communities and ethnical groups, especially in developing countries. In Brazil, the economic potential of the germoplasm of medicinal plants is a wealth to be used and preserved. Native and exotic species are used medicinally in Brazil. Among them, Aloysia gratissima (Gill et Hook) Tronc. (native) and Aloysia triphylla (LHer.) Britton (exotic) both from Verbenaceae Family are highlighted. In this study the meiotic behavior and pollen viability in populations of these species of the genus Aloysia from Rio Grande do Sul State were analyzed. Inflorescences of three populations of A. gratissima and one of A. triphylla were collected in their native local, fixed in absolute ethanol glacial acetic acid (3:1) for 24 hours at room temperature, and after that maintained in ethanol 70% until use. The chromosomal meiotic behavior and pollen viability analysis was performed with anthers by using the squashing technique, and staining in orcein acetic 2%. Our results show that occurred a good meiotic stability and a high viability of the pollen grains in the studied populations of A. gratissima and A. triphylla. And more, that both species present the gametic number n=18, allowing us to suggest the somatic number of 2n=36 chromosomes. 2010 artículo científico 0100-8307 https://www.redalyc.org/articulo.oa?id=467546357003 en http://www.redalyc.org/revista.oa?id=4675 Ciência e Natura application/pdf Universidade Federal de Santa Maria Ciência e Natura (Brasil) Num.1 Vol.32