In Chiapas, Mexico, there are high-yielding coffee plants adapted to the local climatic conditions. The presence of microorganisms in explants makes developing protocols for cloning these genotypes vitro difficult. objective this work was evaluate how field and microorganism management affected asepsis induction callogenesis leaf agronomically important plants. Drought-tolerant were obtained fr...

Effects of increasing cefotaxime, carbenicillin and timentin concentrations on the in vitro morphogenesis of Eucalyptus grandis explants were evaluated. It was observed that carbenicillin and timentin increased the frequency of explant regenerating calluses and decreased necrosis up to 600 mg L-1, and that cefotaxime behaved similarly up to 300 mg L-1. At this level there was an increasing freq...

periwinkle (vinca minor l.) is an evergreen perennial herbaceous plant that belongs to the family apocynaceae. the aerial part of this plant contains certain alkaloids such as vincamine, isovincamine and vincine. the most important of these is vincamine that re-duces blood pressure and promotes memory and the ability for mental concentration. mi-cropropagation could be a good alternative for th...