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Registro Completo
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
08/10/2021 |
Data da última atualização: |
08/10/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
PEREIRA, P. A. A.; DOBEREINER, J.; NEYRA, C. A. |
Afiliação: |
PEDRO ANTONIO ARRAES PEREIRA, SNLCS; JOHANNA DOBEREINER, SNLCS; CARLOS A. NEYRA, RUTGERS UNIVERSITY. |
Título: |
Nitrogen assimilation and dissimilation in five genotypes of Brachiaria spp. |
Ano de publicação: |
1981 |
Fonte/Imprenta: |
Canadian Journal of Botany, v. 59, n. 8, p. 1475-1479, Aug. 1981. |
DOI: |
https://doi.org/10.1139/b81-201 |
Idioma: |
Inglês |
Conteúdo: |
Five genotypes of Brachiaria spp. were planted in a field experiment with and without nitrate fertilization. Nitrogen metabolism was evaluated by measurements of nitrate reductase (NR) activity in leaves, nitrate accumulation in stems, and nitrogenase activity and dentrification in intact soil-plant cores. There were differences between genotypes in all parameters and a tendency was observed for genotypes with high NR activity and nitrate accumulation to have low nitrogenase activity and vice versa. Brachiaria radicans (Tanner grass) was representative for the first type and B. ruziziensis (CPI 30623) for the second. Denitrification reached 7% of the applied N within 63-h and was lowest in Tanner grass and highest in B. brizantha (FL 902-4). Brachiaria ruziziensis (CPI 30623) plants were able to withstand N stress better than B. radicans as a consequence, possibly, of differences in nitrogenase activity. |
Thesagro: |
Brachiaria; Nitrogenase; Nitrogênio. |
Thesaurus NAL: |
Fertilizers; Nitrate fertilizers. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 01569naa a2200217 a 4500 001 2135200 005 2021-10-08 008 1981 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1139/b81-201$2DOI 100 1 $aPEREIRA, P. A. A. 245 $aNitrogen assimilation and dissimilation in five genotypes of Brachiaria spp.$h[electronic resource] 260 $c1981 520 $aFive genotypes of Brachiaria spp. were planted in a field experiment with and without nitrate fertilization. Nitrogen metabolism was evaluated by measurements of nitrate reductase (NR) activity in leaves, nitrate accumulation in stems, and nitrogenase activity and dentrification in intact soil-plant cores. There were differences between genotypes in all parameters and a tendency was observed for genotypes with high NR activity and nitrate accumulation to have low nitrogenase activity and vice versa. Brachiaria radicans (Tanner grass) was representative for the first type and B. ruziziensis (CPI 30623) for the second. Denitrification reached 7% of the applied N within 63-h and was lowest in Tanner grass and highest in B. brizantha (FL 902-4). Brachiaria ruziziensis (CPI 30623) plants were able to withstand N stress better than B. radicans as a consequence, possibly, of differences in nitrogenase activity. 650 $aFertilizers 650 $aNitrate fertilizers 650 $aBrachiaria 650 $aNitrogenase 650 $aNitrogênio 700 1 $aDOBEREINER, J. 700 1 $aNEYRA, C. A. 773 $tCanadian Journal of Botany$gv. 59, n. 8, p. 1475-1479, Aug. 1981.
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