Results 151 to 160 of about 186,142 (399)

Assessment of cross compatibility of pear (Pyrus communis L.) cultivars on the basis of pollen tube observations and analysis of the S-RNase gene

Acta Agrobotanica, 2013
Diallel crosses of P. communis cultivars: 'Amfora', 'Radana', 'Red Williams', 'Carola', 'Conference', and 'Dicolor', were conducted under orchard and laboratory conditions at temperatures of 20°C and 28°C . Based on pollen tube observations and after the
Wojciech Antkowiak, Andrzej Wojciechowski, Łukasz Wolko, Grzegorz Łysiak   +3 more
doaj   +1 more source

FURTHER NOTES ON THE POLLINATION OF YUCCA AND ON PRONUBA AND PRODOXUS [PDF]

, 1880
C. V. Riley
openalex   +1 more source

Causes of delayed angiosperm diversification: The photosynthetic revolution, increased opportunity costs of anti‐herbivore defenses, selection for qualitative toxins, and acceleration of plant–herbivore coevolution

American Journal of Botany, EarlyView.
Abstract Why did it take so long for angiosperms to diversify after they arose? Here I consider the indirect but potentially crucial impact of the “photosynthetic revolution” on plant–herbivore coevolution. Increased vein density in fossil leaves implies a doubling in photosynthesis 125–100 million years ago.
Thomas J. Givnish
wiley   +1 more source

Research Progress in Urban Pollinator-Friendly Landscape Construction

Fengjing Yuanlin
ObjectiveIn recent years, with the development of human society, many ecological problems have begun to emerge, and the number of pollinators is decreasing.
Guiying LI, Hanwen XIAO, Runan TIAN
doaj   +1 more source

JOINT INTERPRETATION OF HETEROSIS AND GENETIC VARIANCES IN TWO OPEN POLLINATED VARIETIES OF CORN AND THEIR CROSS [PDF]

, 1958
H. F. Robinson, A. Khalil, R. E. Comstock, C. Clark Cockerham   +3 more
openalex   +1 more source

Apple Pollination: Demand Depends on Variety and Supply Depends on Pollinator Identity

PLoS ONE, 2016
Insect pollination underpins apple production but the extent to which different pollinator guilds supply this service, particularly across different apple varieties, is unknown.
M. Garratt, T. Breeze, V. Boreux, M. Fountain, Megan McKerchar, Sean M. Webber, Duncan J. Coston, N. Jenner, R. Dean, D. Westbury, J. Biesmeijer, S. Potts   +11 more
semanticscholar   +1 more source

Promoting Pollination and Pollinators in Farming

Journal of Apicultural Science, 2023
Kevan Peter, Chan Susan Willis
openaire   +2 more sources

Floral specialization for beetle pollination and its implications for pollen dispersal in an African orchid

American Journal of Botany, EarlyView.
Abstract Premise Pollination by beetles is relatively rare in orchids, and this has been attributed to the clumsy behavior of beetles being unsuitable for the precise pollen transfer mechanisms that characterize the orchid family. We investigated floral specialization for beetle pollination in the rare fire‐dependent South African orchid Disa elegans ...
Steven D. Johnson, Nina Hobbhahn, Timotheüs van der Niet, Anton Pauw   +3 more
wiley   +1 more source

Social Buffering of Pesticides in Bumblebees: Agent-Based Modeling of the Effects of Colony Size and Neonicotinoid Exposure on Behavior Within Nests

Frontiers in Ecology and Evolution, 2019
Neonicotinoids are a globally prevalent class of pesticides that can negatively affect bees and the pollination services they provide. While there is evidence suggesting that colony size may play an important role in mitigating neonicotinoid exposure in ...
James D. Crall, Benjamin L. de Bivort, Biswadip Dey, Ashlee N. Ford Versypt, Ashlee N. Ford Versypt   +4 more
doaj   +1 more source

Pollination services enhanced with urbanization despite increasing pollinator parasitism

Proceedings of the Royal Society B: Biological Sciences, 2016
Animal-mediated pollination is required for the reproduction of the majority of angiosperms, and pollinators are therefore essential for ecosystem functioning and the economy.
P. Theodorou, Rita Radzevičiūtė, J. Settele, O. Schweiger, T. Murray, R. Paxton   +5 more
semanticscholar   +1 more source