Results 21 to 30 of about 265 (135)

Relação entre características morfológicas da cariopse e fusariose em milho [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2003
Fusarium moniliforme causa sérios prejuízos no rendimento do milho. Suspeita-se que a entrada do fungo na cariopse ocorra pela cicatriz do estilete, e que este fato e o nível de infestação por F.
Raquel Silva Costa   +4 more
doaj   +1 more source

Morfologia do fruto, da semente e morfo-anatomia da plântula de Vitex megapotamica (Spreng.) Moldenke (Lamiaceae) Fruit and seed morphology and morpho-anatomy of seedlings of Vitex megapotamica (Spreng.) Moldenke (Lamiaceae)

open access: yesActa Botânica Brasílica, 2009
Vitex megapotamica (tarumã) é espécie arbórea, decídua, com ocorrência, no Brasil, desde Minas Gerais até o Rio Grande do Sul. Visando à caracterização morfológica do fruto, da semente e morfo-anatômica da plântula, frutos desta espécie foram coletados e
Nelson Luiz Cosmo   +4 more
doaj   +1 more source

Desenvolvimento Vegetativo e morfologia radicular de citrange carrizo afetado por ácido indolbutírico e micorrizas arbusculares Vegetative development and root morphology of carrizo citrange affected by indolebutyric acid and arbuscular mycorrhizal fungi

open access: yesCiência Rural, 2000
Este estudo foi realizado na localidade de Alcanar (Tarragona, Espanha) e objetivou avaliar o efeito de cinco concentrações do ácido indolbutírico (AIB) (0,0; 0,5; 1,0; 1,5; 2,0 g/L) e da inoculação com micorrizas arbusculares (MA) (Glomus intraradices Schenck & Smith) sobre o desenvolvimento vegetativo, conteúdo foliar de P e K e morfologia radicular ...
Paulo Vitor Dutra de Souza   +2 more
openaire   +2 more sources

Fluctuating asymmetry in spider‐hunting wasps as a possible indicator of stress in Brazilian Atlantic Forest landscapes Assimetria flutuante em vespas caçadoras de aranhas como possível indicador de estresse em paisagens da Mata Atlântica brasileira

open access: yesEcological Entomology, EarlyView.
Agricultural cover was positively associated with fluctuating asymmetry in Trypoxylon opacum, suggesting a possible increase in developmental instability in intensively managed landscapes. Wing size was positively related to forest cover and negatively related to agricultural cover, indicating that forested landscapes may promote larger body size ...
Luana Vieira Carlin dos Santos   +3 more
wiley   +1 more source

Secrets within stems: The cryptic Apodanthes caseariae (Apodanthaceae), a rare neotropical holoendoparasite

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 2, Page 385-400, March 2026.
Holoendoparasites are extremely rare plants that live entirely hidden inside their hosts, with only flowers and fruits visible. We studied Apodanthes caseariae, found in central and South America, parasitizing Casearia sylvestris. Little is known about its life cycle.
Jessica A. Ramírez‐Ramírez   +4 more
wiley   +1 more source

Análise dos conteúdos de Botânica nas provas da Olimpíada Brasileira de Biologia no período de 2018-2023

open access: yesRevista da SBEnBIO
Este trabalho teve como objetivo analisar os conteúdos de Botânica da Olimpíada Brasileira de Biologia (OBB) das provas aplicadas no período 2018-2023.
Mário Jeová dos Santos   +1 more
doaj   +1 more source

Soil Properties and Plant Species Identity Independently Influence Arbuscular Mycorrhizal Fungal Composition Across Lowland Tropical Forests

open access: yesBiotropica, Volume 58, Issue 2, March 2026.
We found that plant species identity and soil properties, especially soil phosphorus availability, independently structured arbuscular mycorrhizal fungal (AMF) community composition in tropical forests across central Panama. We also found that soil nutrient availability may mediate the interaction networks between plants and AMF. ABSTRACT Plant species
Mareli Sánchez‐Juliá   +3 more
wiley   +1 more source

A botânica tão perto e tão longe

open access: yesPaubrasilia, 2018
Esta pesquisa teve por objetivo analisar, comparativamente, os planos de ensino ‒ incluindo conteúdos, atividades e materiais didáticos ‒ das disciplinas da área de botânica ministradas em um curso de Ciências Biológicas à distância.
Rayane de Tasso Moreira Ribeiro   +3 more
doaj   +1 more source

Drivers of plant phenolic concentration across global drylands

open access: yesJournal of Ecology, Volume 114, Issue 1, January 2026.
This study advances the understanding of how biotic and abiotic stressors shape plant defence strategies in global drylands. The findings shed novel insights about how plant secondary metabolites and their associated functions shift in response to changes in climate and grazing pressure, two key global change drivers with significant implications for ...
Kaarina N. Shilula   +18 more
wiley   +1 more source

Trait coordination reveals the fast–slow plant economics spectrum along the vertical canopy profile in central Amazonian forests

open access: yesFunctional Ecology, Volume 39, Issue 12, Page 3596-3610, December 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Understanding how environmental drivers affect tree functioning is essential to improve predictions of tropical forests' response to climate change. While functional traits directly influence tree performance, our understanding of how canopy environments shape their ...
Leonardo G. Ziccardi   +13 more
wiley   +1 more source

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