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| Lima, Maria da Graça de Souza; Universidade Federal de Pelotas; Lopes, Nei Fernandes; Universidade Federal de Pelotas; Zimmer, Paulo Dejalma; Universidade Federal de Pelotas; Meneghello, Geri Eduardo; Universidade Federal de Pelotas; Mendes, Cristina Rodrigues; Universidade Federal de Pelotas; Amarante, Luciano do; Universidade Federal de Pelotas. |
| The southern State of Rio Grande do Sul (RS) is the main rice producer in Brazil with a 60% participation of the national production and 86% participation of the region. Rice culture irrigation system is done by flooding, which leads to soil salinization, a major environmental constraint to production since it alters the plants’ metabolism exposed to this type of stress. The indica cultivar, widely used in RS, has a higher sensitivity to salinity when compared to that of the japonica cultivar in other physiological aspects. Current research analyzes enzymes expression involved in salt-subjected indica and japonica rice cultivars’ respiration. Oryza sativa L. spp. japonica S.Kato (BRS Bojuru, IAS 12-9 Formosa and Goyakuman) and Oryza sativa L. spp. indica... |
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Palavras-chave: 2.00.00.00-6; 2.03.03.00-9; 2.08.00.00-2 electrophoresis; Isoenzyme; Krebs cycle; O. sativa L.; Salinity Fisiologia Vegetal. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/8535 |
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| Mori,Edson S; Martins,Dagoberto; Velini,Edivaldo D; Marino,Celso L; Gouvêa,Cantídio F; Leite,Suzi M.M; Camacho,Edwin; Guries,Raymond P. |
| The aquatic plant species Egeria densa (Planch.) Casp and E. najas Planchon occur naturally in the Paraná River Basin of southeastern Brazil. Hydroelectric dam construction in the river basin has created several lakes, changing the ecology of the river and altering the population ecology of Egeria. Large, dense populations of Egeria now grow in Jupiá Lake and its tributaries, occasionally blocking hydroelectric turbines. This study is part of a larger project examining environmental changes associated with large dam projects; the research objective of this study was to assess patterns of genetic diversity in Egeria populations growing in Jupiá and Três Irmãos Lakes and their Paraná River tributaries using genetic markers. Forty-two plants of E. najas and... |
| Tipo: Journal article |
Palavras-chave: Egeria; Dam; Isoenzyme; Genetic distance; RAPD; Reservoir. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000200008 |
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