Results 171 to 180 of about 231,651 (322)

Fine‐tuning the buzz: comparing visitation frequency and pollination effectiveness in plant–pollinator networks

open access: yesNew Phytologist, Volume 249, Issue 4, Page 2140-2152, February 2026.
Summary Ecological network approaches have advanced our understanding of how species interactions influence community and evolutionary dynamics. However, a key limitation is that most network analyses rely solely on visitation data, often overlooking functional aspects of interactions.
Lorena B. Valadão‐Mendes   +4 more
wiley   +1 more source

ESTIMACIÓN DE LA CAPACIDAD GERMINATIVA Y EL VIGOR DE LAS SEMILLAS DE diomate (Astronium graveolens Jacq.) SOMETIDAS A DIFERENTES TRATAMIENTOS Y CONDICIONES DE ALMACENAMIENTO ESTIMATE OF THE GERMINATIVE CAPACITY AND THE VIGOR OF DIOMATE SEEDS (Astronium graveolens Jacq.) SUBJECTED TO DIFFERENT TREATMENTS AND STORAGE CONDITIONS

open access: yesRevista Facultad Nacional de Agronomía Medellín, 2004
Se llevaron a cabo dos estudios con semillas de diomate (Astronium graveolens Jacq). El primero se hizo con el fin de determinar el efecto que sobre la germinación tienen el sustrato y la condición lumínica.
Martha Ligia Gómez Restrepo
doaj  

Structured Metadata for Direct Resource Location: A Case Study [PDF]

open access: yes, 2003
This paper proposes that for scientific and technical information resources, a well-structured and high-quality metadata record contains enough information to find that resource on the Internet, and as a consequence, no additional human labour is needed ...
Agrimi, Moira   +5 more
core  

Temperature‐dependent pollinator‐mediated selection on floral thermoregulation

open access: yesNew Phytologist, Volume 249, Issue 4, Page 1716-1726, February 2026.
Summary The thermal environment is one of the most pervasive agents of selection. Most plants cannot choose their microclimate, so understanding how they cope with thermal variability is of critical concern. Several floral traits can modify the floral thermal microenvironment, which may alleviate negative impacts of thermal extremes on gametophytes and
Matthew H. Koski   +5 more
wiley   +1 more source

Aphid parasitism alters induced plant responses allowing a hyperparasitoid to locate its hidden parasitoid host

open access: yesNew Phytologist, Volume 249, Issue 4, Page 2055-2070, February 2026.
Summary Plants typically host insect communities composed of multiple trophic levels that are intricately linked through interactions mediated by the shared food plant. Hyperparasitoids are top‐level carnivores in such systems, preying on parasitoid larvae developing inside herbivores. These hyperparasitoids can dramatically reduce the effectiveness of
Mitchel E. Bourne   +6 more
wiley   +1 more source

Cultivo de tejidos de Piper sp. (Piperaceae): Propagación, organogénesis y conservación de germoplasma in vitro

open access: yesRevista Colombiana de Biotecnología, 2012
Título en ingles: Tissue culture of Piper sp. (Piperaceae): In vitro propagation, organogenesis and germplasm conservation Resumen: En el Nuevo Mundo el género Piper (Piperaceae) comprende al menos 500 especies en las que muchos compuestos biológicamente
Guillermo E. Delgado-Paredes   +4 more
doaj  

Propagación in vivo e in vitro de Prosopis sp. (algarrobo), Tabebuia billbergii (guayacán negro), Loxopterigium huasango (hualtaco) y Alnus acuminata (aliso) [PDF]

open access: yes, 2013
El Laboratorio de Micropropagación Vegetal del Área Agropecuaria y de Recursos Naturales Renovables, de la Universidad Nacional de Loja, inició, en el presente año, el proyecto de investigación: Generación de protocolos para la propagación in vivo
Delgado Paredes, Guillermo E.   +6 more
core  

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