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PHYSIOLOGICAL POTENTIAL AND CONSERVATION OF MURUCI (Byrsonima crassifolia) SEEDS Rev. Bras. Frutic.
GRZYBOWSKI,CAMILA RIBEIRO DE SOUZA; NASCIMENTO,WALNICE MARIA OLIVEIRA DO; SILVA,ROSEMEIRE CARVALHO DA; VIEIRA,ELISA SERRA NEGRA; PANOBIANCO,MARISTELA.
ABSTRACT The goal of the present study is to assess the physiological potential of Byrsonima crassifoliaseeds and analyze the procedures of the germination and tetrazolium tests, as well as the conservation of such seeds by testing different combinations of packaging and environment. The experiment used pyrenes of the clone Açu, collected from mother plants in the germplasm collection of muruci plants of Embrapa Amazonia Oriental, in Belém, Brazil. Different temperatures were tested in the germination test (25, 30, 35 and 20 - 30 ºC). The best methodology and assessment dates were determined for the test, and the seedlings of the species were characterized. Viability was assessed with the tetrazolium test, with combinations of hydration methods (by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pyrene; Germination; Tetrazolium test; Storage.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000502001
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Morphological characteristics and cell viability of coffee plants calli Ciência Rural
Pádua,Marlúcia Souza; Paiva,Luciano Vilela; Silva,Luciano Coutinho da; Livramento,Kalynka Gabriella do; Alves,Eduardo; Castro,Ana Hortência Fonseca.
The aim of this research was to characterize and compare two types of calli from leaf explants of Coffea arabica (cultivar Catiguá). Cells of different types of callus were successfully characterized regarding viability and internal and external morphological characteristics. It was obtained two morphologically distinct types of callus: (i) yellow friable and (ii) transparent watery. The yellow friable calli showed higher cell viability and embryogenic characteristics. Scanning and transmission electron microscopy showed embryogenic characteristics in cells of the yellow friable calli evidenced by the presence of small and isodiametric cells, while transparent watery calli showed elongated cells and large cytoplasm vacuolization.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffea arabica; Electron microscopy; Tetrazolium test.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000400014
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