Results 71 to 80 of about 419 (169)

Tree‐ring structure determines the temporal coordination between xylem growth and the gain in hydraulic conductivity in the outermost ring

open access: yesNew Phytologist, Volume 250, Issue 6, Page 3732-3746, June 2026.
Summary The study of seasonal xylem hydraulics has predominantly focused on embolism‐induced losses, whereas growth‐driven increases in hydraulic capacity have received little attention. We assessed the intra‐annual dynamics of xylem formation and gain of conductivity in the current‐year ring of three species with contrasting tree‐ring structure ...
Laura Fernández‐de‐Uña   +4 more
wiley   +1 more source

Inside the head of Crotalus durissus LINNAEUS, 1758 (Serpentes, Viperidae, Crotalinae): Macroscopic description of the brain with ontogenetic insights

open access: yesThe Anatomical Record, Volume 309, Issue 1, Page 201-213, January 2026.
Abstract Neuroanatomy studies in vertebrates have garnered significant attention in recent years, particularly driven by advancements in computerized tomography imaging techniques. Nonetheless, these advancements remain largely constrained to specific vertebrate groups, notably mammals, birds, and fish, leaving studies in reptiles at an incipient stage.
Giordanna Issa Lucas, Angele Martins
wiley   +1 more source

Dyckia semperflorenssp. nov. (Bromeliaceae: Pitcairnioideae) from the cold region of Rio Grande do Sul, southern Brazil

open access: yesNordic Journal of Botany, Volume 2026, Issue 1, January 2026.
Dyckia semperflorens (Bromeliaceae: Pitcairnioideae) is described as a new species from the temperate climate region of Rio Grande do Sul state, southern Brazil. The new species belongs to the Dyckia encholirioides complex and is closely related morphologically to Dyckia monticola, which is endemic to the Quiriri mountain range, a high‐altitude region ...
Henrique Mallmann Büneker   +1 more
wiley   +1 more source

Anatomia foliar de espécies de Xylopia L. (Annonaceae) ocorrentes no Parque Ecológico de Gunma, Santa Bárbara, estado do Pará

open access: yesBoletim do Museu Paraense Emílio Goeldi. Ciências Naturais, 2009
Annonaceae apresenta várias espécies produtoras de óleos essenciais, entre estas as do gênero Xylopia, que apresentam propriedades medicinais, farmacológicas e biológicas.
Eliane Francisca de Almeida   +3 more
doaj   +1 more source

Progress in the study of dioecy in Mexican cycad species and its implications for conservation

open access: yesPlant Species Biology, Volume 40, Issue 6, Page 556-571, November 2025.
Cycads are endangered dioecious plants of great ornamental value that have a long period of sexual maturity. Therefore, it is crucial to have methods for early sex determination that can help to develop effective strategies for their conservation. Abstract Dioecy is a system of sexual reproduction in plants, characterized by the spatial separation of ...
Lourdes Georgina Iglesias Andreu   +2 more
wiley   +1 more source

Anatomia foliar de Eugenia umbelliflora Berg. (Myrtaceae)

open access: yesBiotemas, 2000
O presente trabalho foi desenvolvido com o intuito de analisar a lâmina foliar de Eugenia umbelliflora. A anatomia foliar, tamanho, forma e taxa de herbivoria foram examinados. E.
João de Deus Medeiros
doaj  

Anatomia dos órgáos vegetativos de Camarea (Malpichiaceae) Anatomy of vegetative organs of Camarea (Malpighiaceae)

open access: yesActa Botânica Brasílica, 1993
Este trabalho apresenta os dados referentes à anatomia do sistema subterrâneo, caule e folhas das espécies de Camarea. O gênero compreende sete espécies e um provável híbrido, com distribuição predominante nos trópicos do Brasil. São descritas as características anatômicas e discutidas suas implicações na taxonomia e ecologia do gênero.This paper is a ...
openaire   +2 more sources

Leaf anatomy of emerald grass submitted to quantitative application of herbicides

open access: yesSemina: Ciências Agrárias, 2016
The aim of this work was to evaluate the selectivity of herbicides applied in post-emergence on Zoysia japonica Steud (Poaceae) and determine associations with the leaf anatomy of this grass.
Renata Pereira Marques   +4 more
doaj   +1 more source

The Disease Burden in Fish Farm Management: An Integrative View and a Specific Vision in Europe

open access: yesReviews in Aquaculture, Volume 17, Issue 4, September 2025.
ABSTRACT In aquaculture, the interactions and balance—or imbalance—between the fish, the rearing environment, pathogens, and farm management determine the occurrence and impact of clinical diseases. The global assessment of the factors related to disease impact is commonly referred to as disease burden.
Francesc Padros   +6 more
wiley   +1 more source

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

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