Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 2 de 2
Filter
Add filters








Language
Year range
1.
Braz. arch. biol. technol ; 62: e19180228, 2019. tab
Article in English | LILACS | ID: biblio-1019546

ABSTRACT

Abstract The influence of silver nitrate (AgNO3), benzyladenine (BAP), and indole-3-acetic acid (IAA) on low frequency somatic embryogenesis (LFSE) induction in Caturra and Catuaí arabica coffee was evaluated. For the Caturra cultivar, the production of somatic embryos was significantly increased by adding AgNO3 to the semisolid culture medium. The highest average number of somatic embryos for this cultivar was obtained using 6.6 μM BAP, 2.85 μM IAA, and 40 μM AgNO3. In contrast, for the Catuaí cultivar, the highest average number of somatic embryos was obtained using semisolid medium supplemented with 8.8 μM BAP, and 2.85 μM IAA. Using these protocols, somatic embryos were directly induced using leaf sections of in vitro plants of both coffee cultivars within 8 weeks. The somatic embryos developed into rooted plants with a 100% survival rate upon transfer to the greenhouse.


Subject(s)
Plant Growth Regulators , Seeds/chemistry , Silver Nitrate/administration & dosage , Coffea , Tissue Culture Techniques
2.
Braz. arch. biol. technol ; 49(1): 11-19, Jan. 2006. ilus
Article in English | LILACS | ID: lil-427598

ABSTRACT

Plantas transgênicas de Coffea canephora P resistentes ao herbicida glufosinato de amônio foram regeneradas a partir de explantes foliares co-cultivados com Agrobacterium tumefaciens EHA105 contendo o plasmídio pCambia3301 que contém os genes bar e uidA ambos sob controle do promotor 35S. Embriogênese somática direta foi induzida no meio contendo » da concentração de macro, metade da concentração de micronutrientes do meio MS, constituintes orgânicos do meio B5 e 30 g.L-1 de sacarose suplementado com 5µM N6 – (2-isopentenil)-adenina (2-iP) e 10 µM de glufosinato de amônio para seleção de embriões transgênicos putativos. A presença e a integração do gene bar foram confirmados pelas análises de PCR e Southern blot. As plantas transgênicas selecionadas de café, pulverizadas com 1600 mg.L-1 do herbicida FinaleÔ que contém glufosinato como ingrediente ativo, mantiveram a coloração e continuaram crescendo normalmente na aclimatação ex vitro.

SELECTION OF CITATIONS
SEARCH DETAIL