| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 580.84 KB | Adobe PDF |
Orientador(es)
Resumo(s)
Minimal information exists on whole-plant dynamics of mineral flow. Understanding these phenomena in a model plant such as rice could help in the development of nutritionally enhanced cultivars. A whole-plant mineral accumulation study was performed in rice (cv. Kitaake), using sequential harvests during reproductive development panicle exertion, grain filling, and full maturity stages in order to characterize mineral accumulation in roots, non-flag leaves, flag leaves, stems/sheaths, and panicles. Partition quotient analysis showed that Fe, Zn, Cu and Ni are preferentially accumulated in roots; Mn and Mg are accumulated in leaves; Mo, Ca, and S in roots and leaves; and K in roots, leaves and stems/sheaths. Correlation analysis indicated that changes in the concentrations of mineral pairs Fe-Mn, K-S, Fe-Ni, Cu-Mg, Mn-Ni, S-Mo, Mn-Ca, and Mn-Mg throughout the reproductive development of rice were positively correlated in all four of the above ground organs evaluated, with Fe-Mn and K-S being positively correlated also in roots, which suggest that root-to-shoot transfer is not driven simply by concentrations in roots. These analyses will serve as a starting point for a more detailed examination of mineral transport and accumulation in rice plants
Descrição
Palavras-chave
Elemental analysis Mineral flow Correlation analysis Panicle exertion Grain filling Full maturity
Contexto Educativo
Citação
Sperotto, R. A., Vasconcelos, M. W., Grusak, M. A., & Fett, J. P. (2017). Whole-plant mineral partitioning during the reproductive development of rice (oryza sativa L.). Spanish Journal of Agricultural Research, 15(2), e0802
Editora
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria