Biological invasions are key to understanding ecological processes that determine the formation of novel interactions. Alien species can negatively impact floral visitation native species, but may also facilitate early establishment closely related alien by providing a preadapted pollinator community. We tested whether depended on phylogenetic relatedness and similarity species. In field experi...

The increased concern for environmental and health hazards have called for a reduction in the use of synthetic nematicides for nematode control. Experiments were, therefore, conducted to ascertain the nematicidal potential of castor bean’s crude extract and its five lower concentrations with water as control. In the in vitro studies, crude castor bean aqueous extract and 10, 20, 30 and 40% diff...

The purpose of the study was to determine efficiency different methods obtaining sweet potato planting material (through potted seedlings or unrooted cuttings) in conditions Left-Bank Forest-Steppe Ukraine. Research methods: field, laboratory, calculation and statistical. potting method facilitates formation more developed plants (with an increased number shoots per plant their total length). S...

Soil arbuscular mycorrhizal (AM) fungi form a mutualistic symbiosis with plant roots and produce many benefits on host plants under potted conditions, while field inoculation of AM citrus (a woody plant) has been rarely reported. The present study aimed to analyze the changes in growth, root vitality, fruit quality Citrus reticulata Blanco var. Ponkan mandarin cv. Jinshuigan grafted Poncirus tr...

The effects of enhanced UV-B radiation were investigated in the carnivorous plant Pinguicula vulgaris in a field experiment performed in Abisko, North Sweden (68° 21« N, 18° 49« E, 380 m above sea level). Potted plants were exposed to either ambient or ambient plus supplemental UV-B radiation, simulating a 15% ozone depletion. No effect was observed on either the epicuticular (external) or cell...

Flower-visiting insects exhibit innate preferences for particular colours. A previous study demonstrated that naive Papilio xuthus females prefer yellow and red, whereas males are more attracted to blue. Here, we demonstrate that the innate colour preference can be modified by olfactory stimuli in a sexually dimorphic manner. Naive P. xuthus were presented with four coloured discs: blue, green,...

Paclobutrazol (PBZ) is a retardant often used in potted ornamental plants to control their growth and compactness. The distribution in plant, substrate and leachate of PBZ applied to containerized oleander seedlings were studied after a single liquid drench application to the substrate surface (20 mg a.i. per plant) in a nursery dedicated to pot production in SE Spain. PBZ significantly reduced...

163 Guenther et al., 2006) which models the effects of changing phenological and environmental variables on isoprene and other BVOC given species-specific basal emission rates. The isoprene basal emission rate is defined as a constant emission factor representing the capacity of a given plant species to emit isoprene under standard environmental conditions (30°C, 1000 μmol m–2 s–1 of photosynth...