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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Viability and vigor of seeds of Caesalpinia echinata Lam. (brazilwood - Leguminosae) by tetrazolium test

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Author(s):
Edmir Vicente Lamarca [1] ; Simone Nadur Mota Leduc [2] ; Claudio José Barbedo [3]
Total Authors: 3
Affiliation:
[1] Instituto de Botânica. Programa de Pós-Graduação em Biodiversidade Vegetal e Meio Ambiente - Brasil
[2] Instituto de Botânica. Programa de Pós-Graduação em Biodiversidade Vegetal e Meio Ambiente - Brasil
[3] Instituto de Botânica. Seção de Sementes e Melhoramento Vegetal
Total Affiliations: 3
Document type: Journal article
Source: Rev. bras. Bot.; v. 32, n. 4, p. 793-803, 2009-12-00.
Abstract

As an important method to quickly evaluate seed vigor and deterioration, both of them related to seed physiological quality, the tetrazolium test was analyzed for seeds of Caesalpinia echinata Lam. (brazilwood). Mature seeds were incubated in 0.05% to 1.00% tetrazolium solutions for a period varying from 1 to 24 hours, at 35 °C without light. Then, embryos of different levels of deterioration were analyzed under the best conditions (0.05%-0.075% for 2 hours) of incubation. It was possible to identify eight levels of vigor which will be important to a brazilwood seed lot diagnosis in a short time (4 hours) and to identify different types of embryo damages, the later essential to estimate seed storability. (AU)

FAPESP's process: 05/04139-7 - Carbohydrates of tropical species as modulators of ecophysiological processes and as environmental stress response markers
Grantee:Marcia Regina Braga
Support Opportunities: Research Projects - Thematic Grants