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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Milho e Sorgo. |
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Data corrente: |
06/01/2014 |
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Data da última atualização: |
18/06/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FAGERIA, N. K.; CARVALHO, M. C. S.; SANTOS, F. C. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF; MARIA DA CONCEICAO SANTANA CARVALHO, CNPAF; FLAVIA CRISTINA DOS SANTOS, CNPMS. |
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Título: |
Root growth of upland rice genotypes as influenced by nitrogen fertilization. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Journal of Plant Nutrition, New York, v. 37, n. 1, p. 95-106, Jan. 2014. |
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DOI: |
10.1080/01904167.2013.849731 |
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Idioma: |
Inglês |
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Conteúdo: |
The plant root system is an important organ which supplies water and nutrients to growing plants. Information is limited on influence of nitrogen fertilization on upland rice root growth. A greenhouse experiment was conducted to evaluate influence of nitrogen (N) fertilization on growth of root system of 20 upland rice genotypes. The N rate used was 0 mg kg?1 (low) and 300 mg kg?1(high) of soil. Nitrogen X genotype interactions for root length and root dry weight were highly significant (P<0.01), indicating that differences among genotypes were not consistent at two N rates. Overall, greater root length, root dry weight and tops-roots ration were obtained at an N fertilization rate of 300 mg kg?1 compared with the 0 mg N kg?1 soil. However, genotypes differ significantly in root length, root dry weight and top-root ratio. Nitrogen fertilization produced fine roots and more root hairs compared with absence of N fertilizer treatment. Based on root dry weight efficiency index (RDWEI) for N use efficiency, 70% genotypes were classified as efficient, 15% were classified as moderately efficient and 15% were classified as inefficient. Root dry weight efficiency index trait can be incorporated in upland rice for improving water and nutrient efficiency in favor of higher yields. |
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Thesagro: |
Adubação; Arroz; Genótipo; Latossolo; Nitrogênio; Oryza sativa; Raiz; Solo. |
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Thesaurus Nal: |
Genotype; Nitrogen fertilizers; Oxisols; Rice; Roots. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02133naa a2200313 a 4500
001 1977741
005 2025-06-18
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1080/01904167.2013.849731$2DOI
100 1 $aFAGERIA, N. K.
245 $aRoot growth of upland rice genotypes as influenced by nitrogen fertilization.$h[electronic resource]
260 $c2014
520 $aThe plant root system is an important organ which supplies water and nutrients to growing plants. Information is limited on influence of nitrogen fertilization on upland rice root growth. A greenhouse experiment was conducted to evaluate influence of nitrogen (N) fertilization on growth of root system of 20 upland rice genotypes. The N rate used was 0 mg kg?1 (low) and 300 mg kg?1(high) of soil. Nitrogen X genotype interactions for root length and root dry weight were highly significant (P<0.01), indicating that differences among genotypes were not consistent at two N rates. Overall, greater root length, root dry weight and tops-roots ration were obtained at an N fertilization rate of 300 mg kg?1 compared with the 0 mg N kg?1 soil. However, genotypes differ significantly in root length, root dry weight and top-root ratio. Nitrogen fertilization produced fine roots and more root hairs compared with absence of N fertilizer treatment. Based on root dry weight efficiency index (RDWEI) for N use efficiency, 70% genotypes were classified as efficient, 15% were classified as moderately efficient and 15% were classified as inefficient. Root dry weight efficiency index trait can be incorporated in upland rice for improving water and nutrient efficiency in favor of higher yields.
650 $aGenotype
650 $aNitrogen fertilizers
650 $aOxisols
650 $aRice
650 $aRoots
650 $aAdubação
650 $aArroz
650 $aGenótipo
650 $aLatossolo
650 $aNitrogênio
650 $aOryza sativa
650 $aRaiz
650 $aSolo
700 1 $aCARVALHO, M. C. S.
700 1 $aSANTOS, F. C.
773 $tJournal of Plant Nutrition, New York$gv. 37, n. 1, p. 95-106, Jan. 2014.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
