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      Composição química de sementes de trigo (Triticum aestivum L.) submetidas a estresse salino na germinação Translated title: Chemical composition wheat (Triticum aestivum L.) seeds submitted to saline stress

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          Abstract

          O objetivo do experimento foi determinar algumas alterações bioquímicas de sementes de duas cultivares de trigo (BRS 177 e BRS 179) sob influência de diferentes níveis de sal (zero, 15, 30, 45 e 60mM NaCl) no processo de germinação. O ensaio foi realizado para avaliar alterações na atividade da a-amilase e nos teores de amido, açúcares redutores, carboidratos solúveis totais e proteínas causadas pelo estresse salino. A atividade da a-amilase e os teores carboidratos solúveis totais, açúcares redutores e proteínas são reduzidos, porém o conteúdo de amido aumenta com o incremento da salinidade, em ambas cultivares de trigo. Em todas as concentrações de NaCl, os componentes químicos nas sementes da cultivar BRS 179 são maiores do que os da cv. BRS 177, mostrando ser a BRS 179 mais tolerante à salinidade.

          Translated abstract

          The objective of the experiment was to determine some biochemical changes in two wheat cultivars (BRS 177 and BRA 179) under the influence of different salt levels ( zero, 15, 30, 45, and 60mM NaCl). The experiment was carried out to evaluate the effect of saline stress on a-amylase activity and starch, sugar reducers, total soluble carbohydrates and protein contents. The a-amylase activity and the contents of total soluble carbohydrates, sugar reducers and proteins decreased but starch content increased with the increase in salinity for both cultivars. At all NaCl concentrations, the chemical components in the seeds of the BRS 179 cultivar were higher than the ones of the BRS 177 cultivar, showing that the BRS 179 cultivar is more tolerant to salinity.

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          The application of the anthrone reagent to the estimation of starch in cereals

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            A rapid and sensitive method for the quantification of microgram quantities of protein utilizing the principle of dye binding

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              Time Course and Spatial Distribution of Phenylalanine Ammonia-Lyase and Peroxidase Activity in Wounded Potato Tuber Tissue

              R Borchert (1978)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbs
                Revista Brasileira de Sementes
                Rev. bras. sementes
                Associação Brasileira de Tecnologia de Sementes (Londrina )
                0101-3122
                2008
                : 30
                : 1
                : 215-220
                Affiliations
                [1 ] Universidade Federal de Pelotas Brazil
                [2 ] Instituto Federal Sul Rio-Grandense Brazil
                [3 ] Secretaria Municipal de Educação
                Article
                S0101-31222008000100027
                10.1590/S0101-31222008000100027
                0e11e7c2-ca8e-4982-b9f4-49cbf145c110

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0101-3122&lng=en
                Categories
                PLANT SCIENCES

                Plant science & Botany
                Triticum aestivum L.,<FONT FACE=Symbol>a</font>-amylase,starch,sugars,proteins,biochemical changes,salt,<FONT FACE=Symbol>a</font>-amilase,amido,açúcares,proteínas,alterações bioquímicas,sal

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