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| Machado,Eduardo Caruso; Silveira,Joaquim Albenísio Gomes da; Vitorello,Victor Alexandre; Rodrigues,Jorge Luiz Mazza. |
| Foram avaliados, em dois híbridos simples de milho (Zea mays L.), Pioneer 3072 e IAC 701 x B, submetidos à deficiência hídrica, o comportamento da fotossíntese, da remobilização de N e de açúcares durante o período de crescimento dos grãos. As plantas foram cultivadas sob condições naturais, em doze tanques de alvenaria (4 m de comprimento x 0,5 m de largura x 0,6 m de profundidade) contendo terra. A deficiência hídrica foi induzida entre o 5.º e o 15.º dia após a floração, suspendendo-se a irrigação. Sem deficiência hídrica, ambos os híbridos apresentaram comportamento semelhante quanto aos parâmetros avaliados. Sob deficiência hídrica, a remobilização de açúcares e de N, a partir dos órgãos vegetativos para os grãos, foi mais intensa que nas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Milho; Zea mays L.; Deficiência hídrica; Trocas gasosas; Crescimento; Açúcares; Nitrogênio. |
| Ano: 1992 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051992000200004 |
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| Coelho,Cileide Maria Medeiros; Santos,Júlio Cesar Pires; Tsai,Siu Mui; Vitorello,Victor Alexandre. |
| Phytic acid is the major storage form of phosphorus in seeds of legumes and cereals. Since phytate can form complexes with proteins and minerals, reducing the digestive availability of these nutrients, it is usually regarded as an antinutrient, although recent work indicates that it has important beneficial roles as an antioxidant and anticarcinogen. Therefore, there is an interest in the assessment and manipulation of phytate contents in important food grains such as beans. The objective of this work was to compare eleven dry bean genotypes with regard to grain contents of P, phytate, inorganic P and protein and to examine if differences between genotypes could be explained by differences in grain protein content or in uptake and partitioning of P. Plants... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inorganic phosphorus; Phaseolus; Phytic acid; Protein. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202002000100007 |
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| Coelho,Cileide Maria Medeiros; Bellato,Cláudia Mattos; Garcia,Andréia Karime Marcelino; Vitorello,Victor Alexandre; Azevedo,Ricardo Antunes. |
| The in vitro synthesis of phytate was studied in common bean fruit explants. Different concentrations of sucrose; phosphorus (P); myo-inositol; abscisic acid (ABA); glutamine and methionine, were tested. Fixed concentrations of these compounds were tested at different periods (0, 3, 6 and 9 days). Variation in phytate coincided with different concentrations of sucrose, myo-inositol, P and ABA for the duration tested. These compounds caused an accumulation of phytate and were more effective in the presence of myo-inositol and P. The accumulation of P varied less than phytate for the different treatments tested in vitro. In conclusion, P, sucrose, ABA, and myo-inositol caused an increase in the phytate of bean seed, showing that it could be possible to alter... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abscisic acid; Glutamine; Phosphorus; Phytic acid; Sucrose. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100020 |
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