Results 81 to 90 of about 15,622 (227)

Comparação de fibras foliares de brotações de curauá (Ananas erectifolius L.B.Sm) propagadas pelo método convencional e pelo estiolamento in vitro

open access: yesOrnamental Horticulture, 2007
O objetivo deste trabalho foi comparar as fibras existentes em brotações de curauá cultivadas in vitro, pelo método convencional e pelo método de ...
Flávia Dionísio Pereira   +6 more
doaj   +1 more source

Anatomia foliar de Vernonia condensata Baker, (Boldo Africano). [PDF]

open access: yes, 2011
Asteraceae é a maior família do grupo das Angiospermas, dentre as inúmeras plantas da família está a Vernonia condensata Baker, popularmente conhecida como boldo africano.
ILKIU-BORGES, F.   +3 more
core  

Associations among MHC genes, latitude, and avian malaria infections in the rufous‐collared sparrow (Zonotrichia capensis)

open access: yesEcology and Evolution, Volume 14, Issue 7, July 2024.
We investigated MHC gene associations with Plasmodium and Haemoproteus infections in South American rufous‐collared sparrows across a latitudinal gradient, finding non‐linear associations between MHC‐II diversity and latitude, with individuals from north Chile exhibiting lower genetic diversity.
Juan Rivero de Aguilar   +17 more
wiley   +1 more source

Lead tolerance of water hyacinth (Eichhornia crassipes Mart. - Pontederiaceae) as defined by anatomical and physiological traits

open access: yesAnais da Academia Brasileira de Ciências, 2014
This study aimed at verifying the lead tolerance of water hyacinth and at looking at consequent anatomical and physiological modifications. Water hyacinth plants were grown on nutrient solutions with five different lead concentrations: 0.00, 0.50, 1.00 ...
FABRICIO J. PEREIRA   +6 more
doaj   +1 more source

Morfofisiologia de folhas de alho cultivado nas condições edafoclimáticas de Curitibanos, SC [PDF]

open access: yes, 2017
TCC (graduação)- Universidade Federal de Santa Catarina. Campus Curitibanos. Agronomia.O alho é uma planta cultivada em varias regiões do Brasil, no entanto, possui poucos estudos que caracterizem dados morfofisiológicos na literatura.
Cruz, Rafael França Pereira da
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Abstracts

open access: yesMolecular Oncology, Volume 19, Issue S1, Page 1-940, June 2025.
Abstracts submitted to the ‘EACR 2025 Congress: Innovative Cancer Science’, from 16–19 June 2025 and accepted by the Congress Organising Committee are published in this Supplement of Molecular Oncology, an affiliated journal of the European Association for Cancer Research (EACR).
wiley   +2 more sources

Silica deposition and rate the nitrogen is silicon in rice
Deposição de sílica e teor de nitrogênio e silício em arroz

open access: yesSemina: Ciências Agrárias, 2013
The nitrogen fertilization is an important practice to reach high productivity, however, nitrogen high level can cause lodging and make the plants more sensitive to disease. Numerous studies has demonstrate that a lot of grasses accumulate silicon at its
Munir Mauad   +3 more
doaj   +1 more source

Mapping nut‐cracking in a new population of wild capuchin monkeys (Sapajus libidinosus) at Ubajara National Park, Brazil

open access: yesAmerican Journal of Primatology, Volume 86, Issue 4, April 2024.
Capuchin monkeys (Sapajus libidinosus) at Ubajara National Park, Brazil, customarily use hammerstones to crack open at least two species of palm nuts, macaúba and babaçu. We systematically surveyed stone tool use sites in this park, recording and measuring stone tools, processed foods, and available lithic resources.
Tiago Falótico   +4 more
wiley   +1 more source

Effects of light intensity on the distribution of anthocyanins in Kalanchoe brasiliensis Camb. and Kalanchoe pinnata (Lamk.) Pers

open access: yesAnais da Academia Brasileira de Ciências, 2012
This paper compares two medicinal species of Kalanchoe, which are often used interchangeably by the population, regarding the distribution of anthocyanins under the influence of four luminosity levels for 6 months.
Bruna P. Cruz   +4 more
doaj   +1 more source

Relação entre a densidade estomática das cultivares de videiras Syrah e Paulsen 1103 sob restrição hídrica. [PDF]

open access: yes, 2011
Os estômatos são estruturas responsáveis pelas trocas gasosas das plantas vasculares. O objetivo desse trabalho foi determinar a densidade estomática da videira cv.
BASSOI, L. H.   +4 more
core  

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