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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
07/03/2016 |
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Data da última atualização: |
17/01/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FAGERIA, N. K. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF. |
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Título: |
Lowland rice genotypes evaluation for potassium-use efficiency. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, New York, v. 46, n. 13, p. 1628-1635, 2015. |
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Idioma: |
Inglês |
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Conteúdo: |
Lowland rice significantly contributes to world as well as Brazilian rice production and information on genotypes potassium-use efficiency is limited. A greenhouse experiment was conducted with the objective to evaluate lowland rice genotypes for potassium (K)?use efficiency. Ten genotypes were evaluated at 0 mg K kg−1 (low) and 200 mg K kg−1 (high) of soil. Grain yield and shoot dry weight were significantly affected by K as well as genotype treatments. Genotypes CNAi 8860, CNAi 8859, BRS Fronteira, and BRS Alvorada were the best in relation to K-use efficiency because they produced best grain yield at low as well as at higher K levels. Shoot dry weight, number of panicles per pot, and 1000-grain weight had highly significant (P < 0.01) association with grain yield. Spikelet sterility, however, had significant negative association with grain yield. These plant parameters were mainly influenced by genotypes, indicating importance of selecting appropriate genetic material for improving grain yield. Soil K depletion was significant at harvest, suggesting large amount of K uptake by lowland rice genotypes. |
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Thesagro: |
Arroz; Genótipo; Oryza sativa; Potássio. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
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001 2039879
005 2020-01-17
008 2015 bl uuuu u00u1 u #d
100 1 $aFAGERIA, N. K.
245 $aLowland rice genotypes evaluation for potassium-use efficiency.$h[electronic resource]
260 $c2015
520 $aLowland rice significantly contributes to world as well as Brazilian rice production and information on genotypes potassium-use efficiency is limited. A greenhouse experiment was conducted with the objective to evaluate lowland rice genotypes for potassium (K)?use efficiency. Ten genotypes were evaluated at 0 mg K kg−1 (low) and 200 mg K kg−1 (high) of soil. Grain yield and shoot dry weight were significantly affected by K as well as genotype treatments. Genotypes CNAi 8860, CNAi 8859, BRS Fronteira, and BRS Alvorada were the best in relation to K-use efficiency because they produced best grain yield at low as well as at higher K levels. Shoot dry weight, number of panicles per pot, and 1000-grain weight had highly significant (P < 0.01) association with grain yield. Spikelet sterility, however, had significant negative association with grain yield. These plant parameters were mainly influenced by genotypes, indicating importance of selecting appropriate genetic material for improving grain yield. Soil K depletion was significant at harvest, suggesting large amount of K uptake by lowland rice genotypes.
650 $aArroz
650 $aGenótipo
650 $aOryza sativa
650 $aPotássio
773 $tCommunications in Soil Science and Plant Analysis, New York$gv. 46, n. 13, p. 1628-1635, 2015.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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