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      Germinação de sementes de Platypodium elegans Vog. submetidas a diferentes tratamentos prégerminativos e substratos Translated title: Germination of Platypodium elegans Vog. seeds submitted to different pregerminative treatments and substrates

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          Abstract

          Visando o efeito de tratamentos pré-germinativos (testemunha; imersão em ácido clorídrico por 3 min; cortes longitudinais sem e com embebição em água) e substratos (areia e pó de coco) na germinação de sementes de Platypodium elegans Vog avaliou-se, no presente estudo, a porcentagem total, a primeira contagem e a velocidade de germinação das sementes, o comprimento e a massa seca das plântulas. Não houve diferença significativa para a porcentagem de germinação (x = 51%), mas os cortes longitudinais proporcionaram maior velocidade de germinação (x = 0,95) e maior porcentagem na primeira contagem (x = 42%). O pó de coco e os cortes longitudinais promoveram maiores comprimento (x = 13,5 cm) e acumulação de massa seca (x = 50,0 mg) das plântulas.

          Translated abstract

          The aim of this work was to evaluate the influence of germinative pretreatments (control; chloridric acid, for 3 min; longitudinal cuts without and with water soaking) and substrates (sand and coconut fiber) in the germination of Platypodium elegans Vog. seeds. The analyzed characteristics were: percentage of germination, first germination count, germination speed index, length and dry mass gain to seedlings. There was no significant difference for the germination percentage (x = 51%), but the longitudinal cuts promoted higher indices of germination speed (x = 0.95) and first germination count (x = 42%). The coconut fiber and the longitudinal cuts induced greater length (x = 13.5 cm) and dry mass gain (x = 50.0 mg) in the seedlings.

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          Regraspara análise de sementes

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            Regras para análise de sementes

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              Árvores Brasileiras-Manual de Identificação e Cultivo de Plantas Abóreas Nativas do Brasil

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbeaa
                Revista Brasileira de Engenharia Agrícola e Ambiental
                Rev. bras. eng. agríc. ambient.
                Departamento de Engenharia Agrícola - UFCG (Campina Grande )
                1807-1929
                October 2007
                : 11
                : 5
                : 497-501
                Affiliations
                [1 ] Universidade Federal Rural de Pernambuco Brazil
                [2 ] Universidade Federal Rural de Pernambuco Brazil
                [3 ] Universidade Federal Rural de Pernambuco Brazil
                Article
                S1415-43662007000500008
                10.1590/S1415-43662007000500008
                e95d7d6b-a4be-4334-97da-7f9b4db2ebd9

                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=1415-4366&lng=en
                Categories
                AGRICULTURAL ENGINEERING
                ENVIRONMENTAL SCIENCES

                Agricultural engineering,General environmental science
                forest seed,physiological quality,vigor,semente florestal,qualidade fisiológica

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