We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
TRATAMENTO TÉRMICO PARA SUPERAÇÃO DA DORMÊNCIA EM SEMENTES DE Stylosanthes SW. (FABACEAE PAPILIONOIDEAE).
- Authors
DE CASTILIO ALENCAR, KARINA MARGARETI; LAURA, VALDEMIR ANTÔNIO; RODRIGUES, ADRIANA PAULA D'AGOSTINI CONTREIRAS; RESENDE, ROSANGELA MARIA SIMEÃO
- Abstract
Stylosanthes SW. is a genus of tropical legume with great potential for use as forage in Brazil. In general this genus presents seed dormancy, which causes irregular germination, a serious problem in the establishment of pastures. Several studies have explored the use of high temperatures achieving good results not only in overcoming seed dormancy in forage, as well as in the eradication of seed pests aiming at decreasing the use of pesticides. Thus, to evaluate the effects of temperature treatments to overcome seed dormancy of Stylosanthes capitata, S. guianensis and S. macrocephala, seeds were exposed to 50, 60 and 70°C during 5, 10 and 15 hours. Seeds were then subjected to germination tests with four replications of 100 seeds each per treatment. The effect of treatment was evaluated by standard germination and speed germination index (IVG). For S. macrocephala and S. capitata the use of high temperatures overcame seed dormancy. For the first species the most efficient treatment was obtained with 60°C during 15 hours, however for S. capitata seeds the temperature of 70°C showed best results.
- Subjects
BRAZIL; STYLOSANTHES; SEED dormancy; FORAGE plant seeds; DORMANCY in plants; LEGUMES; GERMINATION; PESTICIDES; PLANT physiology
- Publication
Revista Brasileira de Sementes, 2009, Vol 31, Issue 2, p164
- ISSN
0101-3122
- Publication type
Article
- DOI
10.1590/S0101-31222009000200019