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      Influência da temperatura de armazenamento na qualidade das sementes de Caesalpinia peltophoroides Benth. (sibipiruna) Translated title: Influence of storage temperature on seed quality of Caesalpinia peltophoroides Benth.

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          Abstract

          Este trabalho teve como objetivo avaliar o efeito da temperatura de armazenamento na porcentagem de germinação e no vigor das sementes de Caesalpinia peltophoroides Benth. (sibipiruna), por meio de testes fisiológicos. O teor de água aumentou nas sementes armazenadas a 5 °C e reduziu naquelas a 20 °C. A porcentagem de germinação das sementes mantidas a 5 e 20 °C apresentou redução aos 220 e 120 dias, respectivamente. O índice de velocidade de germinação decresceu de maneira similar. A condutividade elétrica não foi alterada nas sementes armazenadas a 5 °C e aumentou nas que permaneceram a 20 °C. O envelhecimento acelerado nos períodos de 24, 48 e 72 horas detectou redução significativa na qualidade das sementes em ambos os ambientes de armazenamento. A redução da porcentagem de germinação e do vigor foi maior nas sementes armazenadas a 20 °C.

          Translated abstract

          The aim of this work was to evaluate the effect of storage temperature on the percentage of seed germination and vigor of Caesalpinia peltophoroides (Caesalpiniaceae) seeds through physiological tests. The water content increased in seeds stored at 5ºC and decreased in seeds stored at 20ºC. The percentage of germination of seeds stored at 5 and 20ºC was reduced from 220 and 120 days, respectively. The germination velocity index decreased in a similar way. The electrical conductivity was not altered on seeds stored at 5ºC and increased on those kept at 20ºC. The accelerated aging for periods of 24, 48 and 72 hours markedly reduced seed quality in both storage environments. The reduction on percentage of seed germination and vigor was grater on seeds stored at 20ºC.

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          Regraspara análise de sementes

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            Curso de Estatística experimental

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              Árvores Brasileiras: Manual de Identificação e Cultivo de Plantas Arbóreas Nativas do Brasil

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rarv
                Revista Árvore
                Rev. Árvore
                Sociedade de Investigações Florestais (Viçosa )
                1806-9088
                February 2006
                : 30
                : 1
                : 43-48
                Affiliations
                [1 ] Universidade Federal de Viçosa Brazil
                [2 ] Universidade Federal de Viçosa Brazil
                Article
                S0100-67622006000100006
                10.1590/S0100-67622006000100006
                c8182cb9-f49e-4ce1-a2ca-ebc62922c4bf

                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=0100-6762&lng=en
                Categories
                FORESTRY

                Forestry
                Caesalpinia peltophoroides,temperature,storage,germination,vigor,germinação,armazenamento
                Forestry
                Caesalpinia peltophoroides, temperature, storage, germination, vigor, germinação, armazenamento

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