ACÚMULO E REMOBILIZAÇÃO DE NITROGÊNIO EM VARIEDADES DE MILHO
The physiologic activity of two corn varieties regarding nitrogen accumulation and remobilization in the vegetative phase was evaluated by the activity of the nitrate reductase enzyme (NR), and NO3 - contents of the N-amino and soluble sugars in leaves, hems and stems of the plants. The varieties we...
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| Format: | Article |
| Language: | English |
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Universidade Federal Rural do Semi-Árido
2006-01-01
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| Series: | Revista Caatinga |
| Online Access: | http://www.redalyc.org/articulo.oa?id=237117570008 |
| _version_ | 1819291699455721472 |
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| author | Eliane de Almeida Borges Manlio Silvestre Fernades Arcângelo Loss Edmilson Evangelista da Silva Sônia Regina de Souza |
| author_facet | Eliane de Almeida Borges Manlio Silvestre Fernades Arcângelo Loss Edmilson Evangelista da Silva Sônia Regina de Souza |
| author_sort | Eliane de Almeida Borges |
| collection | DOAJ |
| description | The physiologic activity of two corn varieties regarding nitrogen accumulation and remobilization in the vegetative phase was evaluated by the activity of the nitrate reductase enzyme (NR), and NO3 - contents of the N-amino and soluble sugars in leaves, hems and stems of the plants. The varieties were selected according to their agricultural characteristics: BRS 4157 (Sol da Manhã), an improved variety used in familial agriculture and BRS 1010, an exotic variety, a simple hybrid used in extensive agriculture. The plants were cultivated in a greenhouse, in pots containing a Red-Yellow Argissol submitted to two doses of N-NO3 - (130 and 1300 mg of N per pot). Harvests were made at the first two stages of the vegetative development, at 32 and 60 days after germination (DAG). The Sol da Manhã variety, efficient in nitrogen use, adapted itself to the condition of low nitrogen due to its higher capacity in accumulating NO3 - in the leaves in the first development stage, and remobilizing it during the second stage. This resulted in a higher free amino-N concentration in the leaves and hems when compared to the simple hybrid BRS 1010, described as a high potential in productivity under low nitrogen conditions. |
| first_indexed | 2024-12-24T03:42:47Z |
| format | Article |
| id | doaj.art-901799c25a404d7f96ed22b9dca1e697 |
| institution | Directory Open Access Journal |
| issn | 0100-316X 1983-2125 |
| language | English |
| last_indexed | 2024-12-24T03:42:47Z |
| publishDate | 2006-01-01 |
| publisher | Universidade Federal Rural do Semi-Árido |
| record_format | Article |
| series | Revista Caatinga |
| spelling | doaj.art-901799c25a404d7f96ed22b9dca1e6972022-12-21T17:16:50ZengUniversidade Federal Rural do Semi-ÁridoRevista Caatinga0100-316X1983-21252006-01-01193278286ACÚMULO E REMOBILIZAÇÃO DE NITROGÊNIO EM VARIEDADES DE MILHOEliane de Almeida BorgesManlio Silvestre FernadesArcângelo LossEdmilson Evangelista da SilvaSônia Regina de SouzaThe physiologic activity of two corn varieties regarding nitrogen accumulation and remobilization in the vegetative phase was evaluated by the activity of the nitrate reductase enzyme (NR), and NO3 - contents of the N-amino and soluble sugars in leaves, hems and stems of the plants. The varieties were selected according to their agricultural characteristics: BRS 4157 (Sol da Manhã), an improved variety used in familial agriculture and BRS 1010, an exotic variety, a simple hybrid used in extensive agriculture. The plants were cultivated in a greenhouse, in pots containing a Red-Yellow Argissol submitted to two doses of N-NO3 - (130 and 1300 mg of N per pot). Harvests were made at the first two stages of the vegetative development, at 32 and 60 days after germination (DAG). The Sol da Manhã variety, efficient in nitrogen use, adapted itself to the condition of low nitrogen due to its higher capacity in accumulating NO3 - in the leaves in the first development stage, and remobilizing it during the second stage. This resulted in a higher free amino-N concentration in the leaves and hems when compared to the simple hybrid BRS 1010, described as a high potential in productivity under low nitrogen conditions.http://www.redalyc.org/articulo.oa?id=237117570008 |
| spellingShingle | Eliane de Almeida Borges Manlio Silvestre Fernades Arcângelo Loss Edmilson Evangelista da Silva Sônia Regina de Souza ACÚMULO E REMOBILIZAÇÃO DE NITROGÊNIO EM VARIEDADES DE MILHO Revista Caatinga |
| title | ACÚMULO E REMOBILIZAÇÃO DE NITROGÊNIO EM VARIEDADES DE MILHO |
| title_full | ACÚMULO E REMOBILIZAÇÃO DE NITROGÊNIO EM VARIEDADES DE MILHO |
| title_fullStr | ACÚMULO E REMOBILIZAÇÃO DE NITROGÊNIO EM VARIEDADES DE MILHO |
| title_full_unstemmed | ACÚMULO E REMOBILIZAÇÃO DE NITROGÊNIO EM VARIEDADES DE MILHO |
| title_short | ACÚMULO E REMOBILIZAÇÃO DE NITROGÊNIO EM VARIEDADES DE MILHO |
| title_sort | acumulo e remobilizacao de nitrogenio em variedades de milho |
| url | http://www.redalyc.org/articulo.oa?id=237117570008 |
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