Results 31 to 40 of about 3,763,333 (307)
Is a Dataframe Just a Table? [PDF]
, 2020 Querying data is core to databases and data science. However, the two communities have seemingly different concepts and use cases. As a result, both designers and users of the query languages disagree on whether the core abstractions - dataframes (data ...
Wu, Yifan
core +1 more source
The macroeconomic cost of catastrophic pollinator declines [PDF]
, 2016 We develop a computable general equilibrium (CGE) approach to assess the macroeconomic impacts of productivity shocks due to catastrophic losses of pollination ecosystem services at global and regional scales.
Bauer, Dana Marie, Sue Wing, Ian
core +1 more source
, 2017 (Importance of bees in pollination of Solanum lycopersicum L. (Solanaceae) in open-field of the Southeast of Minas Gerais State, Brazil). Pollinators are extremely important in agricultural crops because their deficit can affect food production in the ...
Ronaldo Vinícius-Silva +4 more
semanticscholar +1 more source
Blooming phenology and fertility of sour cherry cultivars selected in Hungary
International Journal of Horticultural Science, 2002 Experiments were conducted during the period between 1972 and 2002 at three sites in Hungary. At Érd 97, Helvetia 10, and Újfehértó, 3 cultivars were studied in variety collections.
J. Nyéki, T. Szabó, Z. Szabó
doaj +1 more source
Courgette Production: Pollination Demand, Supply, and Value [PDF]
, 2017 This is the final version of the article. Available from OUP via the DOI in this record.Courgette (Cucurbita pepo L.) production in the United Kingdom is estimated to be worth £6.7 million.
Knapp, JL, Osborne, JL
core +1 more source
Comparative reproduction mechanisms of three species of Ocimum L. (Lamiaceae)
Acta Agrobotanica, 2016 Ocimum species have a combination of reproductive system which varies with the locality and cultivar. We have studied here the reproductive mechanisms of five variants of three Ocimum species in Nigeria, namely: Ocimum canum Sims., O. basilicum L., and O.
Matthew Oziegbe +2 more
doaj +1 more source
Self-pollination by sliding pollen in Caulokaempferia coenobialis (Zingiberaceae) [PDF]
, 2005 Caulokaempferia coenobialis (Zingiberaceae) forms dense populations on steep cliffs in shady, humid monsoon forests in south China. It produces few consecutively opening bright yellow flowers that are 3 cm long and oriented parallel to the ground.
Chen, Zhongyi +3 more
core +1 more source
, 2014 Maize ( Zea mays L.) grain endosperm is triploid (3n), of which 2n come from the male (transferred by pollen) and only 1n from the female plant, thus a major impact of the male form can be expected on grain quality parameters.
H. Sulewska +7 more
semanticscholar +1 more source
Variability of the data indicating the fertility of different plum varieties
International Journal of Horticultural Science, 2003 Self-fertility and fertility at conditions of open pollination in plum varieties is strictly determined by genetic factors. However, rates of fruit set are highly variable according to growing sites as well as to seasons, which may result from a couple ...
Z. Szabó, J. Nyéki
doaj +1 more source
PICT: A low‐cost, modular, open‐source camera trap system to study plant–insect interactions
Methods in Ecology and Evolution, 2021 Commercial camera traps (CTs) commonly used in wildlife studies have several technical limitations that restrict their scope of application. They are not easily customizable, unit prices sharply increase with image quality and importantly, they are not ...
V. Droissart +5 more
semanticscholar +1 more source