2- Isopentenyladenine in the induction of direct somatic embryogenesis capacity of Coffea arabica L

This study evaluated the effect of different concentrations of 2-isopentenyladenine (2-iP) on the direct somatic embryogenesis capacity of the Mundo Novo cultivar of Coffea arabica. Leaf explants were cultivated with half the MS salt concentration and the addition of sucrose (20gL-1) and 2-iP (0; 2....

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Published inCiência rural Vol. 48; no. 11
Main Authors Alves, Ivanilda dos Santos, Carmazini, Valéria Cristina Barbosa, Santos, Cosme Damião dos, Almeida, Julieta Andrea Silva de
Format Journal Article
LanguageEnglish
Portuguese
Published Santa Maria Universidade Federal de Santa Maria Centro de Ciencias Rurais 01.01.2018
Universidade Federal de Santa Maria
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Summary:This study evaluated the effect of different concentrations of 2-isopentenyladenine (2-iP) on the direct somatic embryogenesis capacity of the Mundo Novo cultivar of Coffea arabica. Leaf explants were cultivated with half the MS salt concentration and the addition of sucrose (20gL-1) and 2-iP (0; 2.5; 5; 7.5 and 10µM). The 2-iP doses of 7.5 and 10µM produced the greatest responses with respect to the percentage of explants with embryogenic structures and the size of the embryogenic structures. However, the greatest production of somatic embryos occurred on the explants treated with 10µM of 2-iP, followed by 7.5µM, whereas their production was absent or reduced with 0 and 5µM, respectively. RESUMO: Este estudo avaliou o efeito de diferentes concentrações de 2-isopentalinadenina (2-iP) na capacidade de embriogênese somática direta da cultivar Mundo Novo de Coffea arabica. Explantes foliares foram cultivados em meio com metade da concentração de sais de MS e adição de sacarose (20gL-1) e de 2-iP (0; 2,5; 5; 7,5 e 10µM). Os tratamentos com 7,5 e 10µM de 2-iP induziram respostas mais elevadas de porcentagem de explantes com estruturas embriogênicas e de tamanho de estrutura embriogênica. Porém, os explantes tratados 10µM de 2-iP tiveram maior produção de embriões somáticos, seguido de 7,5µM, enquanto nos tratamentos controle e com 5µM, as respostas foram respectivamente de ausência e de baixa formação destes.
ISSN:0103-8478
1678-4596
1678-4596
DOI:10.1590/0103-8478cr20180001