Results 1 to 10 of about 1,200 (101)

Micropropagación de la planta medicinalPsychotria acuminata

open access: yesAgronomía Costarricense, 2003
Psychotria acuminata es una planta medicinal que produce los alcaloides emetina, cephaelina y psychotrina, usados como expectorantes y eméticos. Hoy día estos alcaloides son extraídos de plantas silvestres pues esta especie no ha sido domesticada ...
Alfonso Lara   +3 more
doaj   +4 more sources

Histología de embriones somáticos y brotes adventicios inducidos en hojas de Psychotria acuminata

open access: yesAgronomía Costarricense, 2003
Embriones somáticos y brotes adventicios fueron inducidos directamente en hojas de Psychotria acuminata cultivadas in vitro en un medio de Murashige y Skoog (1962), suplementado con 3 mg l-1 de 6-BAP, 0,01 mg l-1 de ANA y 2 g l-1 de phytagel.
Alfonso Lara   +2 more
doaj   +2 more sources

Variabilidad y diferenciación genética en cuatro poblaciones de la planta medicinal Psychotria acuminata en Costa Rica

open access: yesAgronomía Costarricense, 2003
Un total de 51 accesiones de Psychotria acuminata, provenientes de 4 poblaciones en Costa Rica, fueron evaluadas con los marcadores moleculares RAPD (Random Amplified Polymorphic DNA) e ISSR (Inter-Simple Sequence Repeat DNA). Con el uso de 16 decámeros
Alfonso Lara   +3 more
doaj   +3 more sources

Insect galls of the Floresta da Cicuta (Volta Redonda, RJ, Brazil)

open access: yesPapéis Avulsos de Zoologia, 2018
Insect galls of the Floresta da Cicuta (Volta Redonda, RJ, Brazil). Galls are changes in the pattern of growth and development of plant tissues or organs in response to the action of an inducing organism, usually an insect.
Ismael Cividini Flor   +2 more
doaj   +1 more source

Introduction à la végétation, à la flore et aux noms vernaculaires de l'île de Pentecôte (Vanuatu) [PDF]

open access: yes, 1983
The authors bring here all the constituents of an ethnobotanical and ethnolinguistic study of the native and introduced plants of Pentecost Island (Vanuatu).Les auteurs apportent ici tous les éléments d'une étude ethnobotanique et ethnolin- guistique des
Cabalion, Pierre, Morat, Philippe
core   +1 more source

Structure and Floristic Composition of Flood Plain Forests in the Peruvian Amazon. II. The Understorey of Restinga Forests [PDF]

open access: yes, 2001
Structure and floristic composition of small trees and shrubs (1.5 m height to 10 cm diameter at breast height was described in two flood plain forests of the lower Ucayali river, Peruvian Amazon. The forests were of the high and low restinga type, on an
Balslev   +29 more
core   +5 more sources

Transcriptome analysis of stem wood of Nothapodytes nimmoniana (Graham) Mabb. identifies genes associated with biosynthesis of camptothecin, an anti-carcinogenic molecule [PDF]

open access: yes, 2016
Camptothecin (CPT), a monoterpene indole alkaloid, is a potent inhibitor of DNA topoisomerase I and has applications in treating ovarian, small lung and refractory ovarian cancers. Stem wood tissue of Nothapodytes nimmoniana (Graham) Mabb.
Kumar, Sanjay   +6 more
core   +1 more source

Nuevos resultados de la revisión taxonómica de los géneros Palicourea y Psychotria (Rubiaceae, Psychotrieae) en Cuba [PDF]

open access: yes, 2016
The authors carried out a taxonomic study and revised and identified about 7,000 herbarium sheets of the genera Palicourea and Psychotria preserved in the collections of the Academy of Sciences of Cuba (HAC) and of the National Botanical Garden of Cuba ...
Borhidi, A. L.   +2 more
core   +1 more source

Taxonomic results of the Bryotrop expedition to Zaire and Rwanda : 3., description of dollecting sites, the vegetation of Kahuzi-Biega-National Park/Zaire, Nyungwe Forest and Virunga volcanoes/Rwanda [PDF]

open access: yes, 1993
During the BRYOTROP-Expedition in 1991, 71 collecting sites could be visited. These are situated in the Kahuzi-Biega-National Park/Zaire, the Nyungwe Forest and the Virunga volcanoes/Rwanda.
Fischer, Eberhard
core  

Incidence of Extra-Floral Nectaries and their Effect on the Growth and Survival of Lowland Tropical Rain Forest Trees [PDF]

open access: yes, 2013
Received the best poster in Organismal Biology award at the NMS Undergraduate Research ForumMutualistic relationships between organisms have long captivated biologists, and extra-floral nectaries (EFNs), or nectar-producing glands, found on many plants ...
Andrew, Muehleisen
core  

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