Results 31 to 40 of about 3,118 (119)

Biologia floral em quatro espécies de Ipomoea (Tubiflorae: Convolvulaceae) - DOI: 10.4025/actascianimsci.v27i1.1259

open access: yesActa Scientiarum: Animal Sciences, 2008
O objetivo deste trabalho foi estudar a biologia floral de Ipomoea acuminata, I. batata, I. cairica e I. quamoclit na região de Maringá, Estado do Paraná.
Yoko Terada   +3 more
doaj   +1 more source

Pollinator efficiency, rather than bee decline, explains a shift to hummingbird pollination in tropical montane forests

open access: yesNew Phytologist, EarlyView.
Hummingbird pollination is a hallmark of American plant diversity and has long been thought to evolve in tropical mountains due to declining bee activity. Using sister species of Costus specialized on bees (C. kuntzei) and hummingbirds (C. wilsonii), we show that this shift is not driven by reduced bee visitation with elevation, but by greater ...
Pedro Juárez   +7 more
wiley   +1 more source

Uso da tela excluidora de rainha no alvado e seus efeitos na atividade de coleta e no desenvolvimento de colônias de Apis mellifera

open access: yesActa Scientiarum: Animal Sciences, 2008
Este trabalho teve o objetivo de avaliar os efeitos da tela excluidora de rainhas colocada no alvado sobre a atividade de coleta das operárias de Apis mellifera, peso da carga de pólen transportada e desenvolvimento das colônias.
Darclet Terezinha Malerbo-Souza   +3 more
doaj   +1 more source

Trimerous magnoliid flowers with a unique set of floral and pollen traits from the Late Cretaceous of Southern Bohemia (Czech Republic)

open access: yesNew Phytologist, EarlyView.
Morphospace position and phylogenetic placements of Trimeriantha monopolyada. Summary Floral structure is a key aspect of angiosperm diversity. Recent research revealed that significant floral disparity was already present in the Cretaceous. However, our understanding of early floral diversity remains limited, as it is directly dependent on the fossil ...
Xieting Wu   +7 more
wiley   +1 more source

Cost-effective characterization of surface tension in surfactant-laden solutions via splash height and drop-based methods

open access: yesDiscover Applied Sciences
Surface tension governs key interfacial phenomena such as droplet formation, spreading, and splash dynamics, yet standard measurement techniques are often limited by costly instrumentation and restrictive setups.
Connor Polen
doaj   +1 more source

Construção e avaliação de um protótipo de máquina coletora de anteras

open access: yesRevista Brasileira de Fruticultura, 2013
Um protótipo de máquina coletora de anteras foi projetado e construído, e seu desempenho foi avaliado, comparando - se com o método de coleta manual, em flores rosáceas e campanuladas de pessegueiro (Prunus persica).
Rodrigo Tonet   +3 more
doaj   +1 more source

The potential of seedbank digital information in plant conservation

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 4, Page 1017-1028, July 2026.
Seedbanks are vital for biodiversity conservation, but their potential remains underutilised due to a limited understanding of the intraspecific genetic diversity they hold. By leveraging digitised data associated with seedbank collections, such as sampling locations, number of maternal plants and seed traits, we can attempt the estimation of genetic ...
Roberta Gargiulo   +23 more
wiley   +1 more source

Un diagrama de polen del Pleistoceno final y Holoceno de Mullumica

open access: yesMaguaré, 2003
N.A.
Thomas Van der Hammen   +2 more
doaj   +2 more sources

Viabilidade do pólen e desenvolvimento do tubo polínico em macieira (Malus spp.) Germination of pollen and the development of pollen tubes in apple (Malus spp.)

open access: yesRevista Brasileira de Fruticultura, 2005
No presente trabalho, estudaram-se características associadas à germinação in vitro e ao desenvolvimento in vivo do tubo polínico em seis variedades-copa e de porta-enxertos de macieira como subsídios para o estabelecimento de programas de melhoramento ...
Adriana Cibele de Mesquita Dantas   +3 more
doaj   +1 more source

Flowering out of sync: Climate change alters the reproductive phenology of Terminalia paniculata in the Western Ghats of India

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 4, Page 1322-1333, July 2026.
Understanding how climate change impacts the plant life cycle is critical for maintaining biodiversity and ecosystem services. Our findings suggest that Terminalia paniculata Roth, a common tropical deciduous tree species in the Western Ghats, is now flowering and fruiting at more scattered times than it used to in the past.
Ananthapadmanaban Karthikeyan   +2 more
wiley   +1 more source

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