Results 21 to 30 of about 314 (127)

The Role of Phosphate Fertilization on Physiological Responses of the Young Bertholletia excelsa Plants Grown in a P-Deficient Amazon Ferralsol

Plants, 2022
Phosphorus (P) reacts with soil minerals, which makes it less available to plants. Considering that Amazonian soils have a low pH and nutrient availability, both of these properties contribute to an increase in P limitation.
Viviane Corrêa, José Gonçalves, Karen Costa, Igor Oliveira, José Santos, Sabrina Oliveira, Marciel Ferreira, Roberval Lima, Wagner Araújo, Adriano Nunes-Nesi   +9 more
doaj   +1 more source

Anthropogenic landscape in southeastern Amazonia: contemporary impacts of low-intensity harvesting and dispersal of Brazil nuts by the Kayapó Indigenous people. [PDF]

PLoS ONE, 2014
Brazil nut, the Bertholletia excelsa seed, is one of the most important non-timber forest products in the Amazon Forest and the livelihoods of thousands of traditional Amazonian families depend on its commercialization. B.
Maria Beatriz N Ribeiro, Adriano Jerozolimski, Pascale de Robert, Nilson V Salles, Biribiri Kayapó, Tania P Pimentel, William E Magnusson   +6 more
doaj   +1 more source

Effect of Mechanical, Chemical and Physical Scarification on the Germination of Brazil Nut Seeds (Bertholletia excelsa Bonpl.) in Peru [PDF]

Nature Environment and Pollution Technology
Bertholletia excelsa Bonpl. (Brazil nut) is an economically important species in the Amazon, whose natural seed production takes between 365 and 545 days and shows low germination rates.
Josue Ely Ponce-Avila, Jairo Edson Gutiérrez-Collao, Julio Miguel Ángeles-Suazo, Charles Frank Saldaña-Chafloque, Benancio Pantoja-Medina, Rodrigo Ponce-Escobal and Flor Yenny Tucto-Ortega
doaj   +1 more source

Growth and functional leaf traits of coppice regrowth of Bertholletia excelsa during an El Niño event in the central Amazon [PDF]

Acta Amazonica, 2023
The most severe drought of this century in the Amazon rainforest, which was caused by El Niño, occurred from 2015 to 2016. With a focus on the ecophysiology of the regrowth of the Brazil nut tree, Bertholletia excelsa, it was investigated how the ...
Saine Leonam Kador FORTES, José Francisco de Carvalho GONÇALVES, Karen Cristina Pires da COSTA, Jussara de Souza LOPES, Marciel José FERREIRA, Roberval Monteiro Bezerra de LIMA, Adamir da Rocha NINA JUNIOR   +6 more
doaj   +1 more source

CRESCIMENTO E EFICIÊNCIA DO USO DA ÁGUA DE PLANTAS JOVENS DE CASTANHEIRA-DA-AMAZÔNIA EM ÁREA DEGRADADA E SUBMETIDAS À ADUBAÇÃO

Ciência Florestal, 2012
This work objectives to analyze the absolute growth rate (AGR), leaf gas exchange and leaf water potential (YW) of young Brazil nut (Bertholletia excelsa Humb.
Marciel José Ferreira, José Francisco de Carvalho Gonçalves, João Baptista Silva Ferraz   +2 more
doaj   +3 more sources

Chloroplastid pigment contents and chlorophyll a fluorescence in Amazonian tropical three species Concentração de pigmentos cloroplastídicos e fluorescência da clorofila a em espécies arbóreas tropicais da Amazônia

Revista Árvore, 2007
Plants react to changes in light and hydrological conditions in terms of quantity and composition of chloroplastidic pigments, which affects the photosynthetic properties and consequently the accumulation of plant biomass.
Ronaldo Ribeiro de Morais, José Francisco de Carvalho Gonçalves, Ulysses Moreira dos Santos Júnior, Oliver Dünisch, André Luis Wendt dos Santos   +4 more
doaj   +1 more source

Paranuss (Bertholletia excelsa, Lecythidaceae) – ein Affentopfgewächs

Der Palmengarten, 2014
Der Paranussbaum (Bertholletia excelsa) ist ein großer Baum aus dem amazonischen Regenwald. Er erreicht eine Höhe von 60 m. Seine Frucht ist fest und hart. Diese enthält mehrere essbare Samen, die sogenannten Paranüsse. Größere Nagetiere wie Agutis sind in der Lage, diese Früchte aufzubeißen. Paranussöl wird in der Kosmetikindustrie verwendet. Biologie,
Dörken, Veit Martin, Steinecke, Hilke
openaire   +2 more sources

Germinação de sementes de castanheira-do-pará armazenadas em areia úmida Brazil nut seed germination stored in moist sand

Pesquisa Agropecuária Brasileira, 2009
O objetivo deste trabalho foi avaliar o efeito do armazenamento em areia úmida e do pré-tratamento com ácido giberélico na germinação das sementes de castanheira-do-pará. Foram realizados dois experimentos em delineamento experimental de blocos ao acaso,
Antonio Nobre da Silva, Maria de Fatima Barbosa Coelho, Sebastião Carneiro Guimarães, Maria Cristina de Figueiredo e Albuquerque   +3 more
doaj   +1 more source

Growth and survival over ten years of Brazil-nut trees planted in three anthropogenic habitats in northern Amazonia [PDF]

Acta Amazonica, 2021
We examined the growth and survival of Brazil-nut trees, Bertholletia excelsa (Lecythidaceae) under different environmental conditions and levels of canopy openness within experimental plantations in the Trombetas River valley, in northern Brazil.
Ricardo SCOLES, Rogério GRIBEL
doaj   +1 more source

Callus induction in Bertholletia excelsa immature seeds

Journal of Biotechnology and Biodiversity, 2013
Bertholletia excelsa H.B.K.,known as Brazil nuttree, belongs to the Lecythidaceae botanic family and is endemic to the AmazonianRegion. Its nuts have high economic and nutritional value. The objective of this work was to establish efficient protocols for callus induction from immature seeds of B.excelsa, as a preliminary step to its further ...
dos Santos, Maurício Reginaldo Alves, Ferreira, Maria das Graças Rodrigues, Carvalho, Sandra Mirlêny da Silva, Santos, Maurício Reginaldo Alves dos, Ferreira, Maria das Graças Rodrigues, Carvalho, Sandra Mirlêny da Silva   +5 more
openaire   +3 more sources