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Germination, carbohydrate composition and vigor of cryopreserved Caesalpinia echinata seeds BABT
Zanotti,Rafael Fonsêca; Motta,Ludymila Brandão; Bragatto,Juliano; Labate,Carlos Alberto; Salomão,Antonieta Nassif; Vendrame,Wagner A.; Cuzzuol,Geraldo Rogerio Faustini.
The present study investigated the germination and vigor of Caesalpinia echinata (Brazilwood) seeds stored at negative temperatures. Recently harvested seeds were cryopreserved at -18º or -196ºC and periodically evaluated for germination, seed vigor and carbohydrate composition. The temperatures did not influence the germination percentages or vigor. The germination percentage decreased from 88% in recently harvested seeds to 60% after 730 days of storage. The different temperature and storage times tested did not affect the vigor seed germination as indicated by the measures of plant growth and survival. The different temperatures used did not cause changes in the carbohydrate composition. The tegument cell walls were rich in lignin, arabinose and xylose....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilwood; Carbohydrate; Conservation; Germination; Seed bank; Storage.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000500004
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Physiological characteristics in seeds of the common bean under multicollinearity and conditions of salinity Rev. Ciênc. Agron.
Guilhen,José Henrique Soler; Marçal,Tiago de Souza; Zanotti,Rafael Fonsêca; Lopes,José Carlos; Ferreira,Adésio.
ABSTRACT The objective of this work was evaluate multicollinearity effect and discard the variables which are based on multicollinearity reduction in diversity analysis of common bean genotypes, related to seeds physiological quality, in different salinity levels in germination substrate. The common bean seed germination test for six cultivars and seven landrace genotypes was performed in paper rolls (germitest), imbibed in NaCl solutions on the osmotic potentials of 0.0; -0.3 and - 0.6 MPa, maintained in germinated Mangelsdorff type at temperature of 25 °C, on constant light. The experimental design was completely randomized in factorial arrangement 13 x 3 (genotype x osmotic potential), with four replications with 25 seeds, totaling 100 seeds per...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phaseolus vulgaris; Salt stress; Canonical variable.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000100127
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