Atividade da nitrato redutase em leguminosas sob doses de molibdênio
The management of nitrogen-fixing plants is a major biological route of nitrogen input. The use of techniques to maximize the potencial for biological fixation, such as the application of Mo in legumes crops, may influence the metabolism N. This study aimed to evaluate the enzyme nitrate reductase a...
| Autor principal: | Kutz, Talita Slota |
|---|---|
| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
|
| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/14043 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| Resumo: |
The management of nitrogen-fixing plants is a major biological route of nitrogen input. The use of techniques to maximize the potencial for biological fixation, such as the application of Mo in legumes crops, may influence the metabolism N. This study aimed to evaluate the enzyme nitrate reductase activity in legumes under molybdenum doses. The experiment was carried out in UTFPR, Pato Branco campus, were used two species of green manure legumes, sunn hemp (Crotalaria juncea) and jack beans (Canavalia ensiformis) and four molybdenum doses (0, 40, 80 and 120 g ha-1) in the form of sodium molybdate, foliarly applied in green manures, and thereafter, at the same plots where such were managed common bean plants were crop without any additional fertilization. It was also performed a pretest where we evaluated three parts of shoots of green manures. The collection of samples for the analysis of nitrate reductase activity was performed for green manure at 90 DAS and for common bean at 66 DAS. The jack beans showed higher values for NR in the superior and middle parts compared with sunn hemp. There was no statistical difference between the portions within each species. The sunn hemp showed a positive quadratic effect for the NR in relation to Mo doses applied, and jack beans showed a negative quadratic effect. The residual effect of Mo doses applied in green manures in the NR in common bean showed a negative quadratic response for both species. |
|---|