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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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Molecular characterization of arabica and Conilon coffee plants genotypes by SSR and ISSR markers BABT
Motta,Ludymila Brandão; Soares,Taís Cristina Bastos; Ferrão,Maria Amélia Gava; Caixeta,Eveline Teixeira; Lorenzoni,Rodrigo Monte; Souza Neto,José Dias de.
The molecular characterization of ten genotypes of the Coffea arabica plants and of seven genotypes of C. canephora having interesting features for coffee breeding programs was carried to select the parents for breeding. A total of 40 SSR and 29 ISSR primers were used. The primers generated a total of 331 (307 polymorphic and 24 monomorphic) bands. Analysis of genetic diversity presented dissimilarity intervals ranging from 0.22 to 0.44 between the Conilon genotypes, from 0.02 to 0.28 between the Arabica genotypes, and from 0.49 to 0.60 between the genotypes of the two species in the joint analysis. Four groups were formed: I = genotypes of C. arabica, II = four progenies of C. canephora, Conilon group, and one non defined C. canephora (Conilon or...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffea Arabica; Coffea canephora; Genetic diversity; Molecular markers.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000500728
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