Variability of terry flowers in buttercup Ranunculus acris from different populations demonstrates the anthropogenic impact on environment. Schoolchildren carried out training works analyzing frequency occurrence trait double a flower North-West Region Russia. The data obtained made it possible to discuss questions about mechanisms action environmental pollution by surfactants and unsaturated h...

ABSTRACT Overwintering of tobacco thrips, Frankliniella fusca, was investigated on common winter annual host plants infected with Tomato spotted wilt virus (TSWV). Populations of tobacco thrips produced on TSWV-infected plants did not differ from those produced on healthy plants, whereas populations varied greatly among host plant species. The mean per plant populations of F. fusca averaged 401...

1 Plant species are known to segregate along small-scale flooding gradients. We tested whether differences in flooding duration can also result in genetic differentiation in the clonal species Ranuneu/us replans, which naturally grows in both a lakeside microhabi tat and a landside microhabitat with shorter periods of flooding. 2 We compared traits related to fitness, and clonal life-history tr...

Abstract Pollen grains dehydrate during their development and following departure from the host stigma. Since size shape of a pollen grain can be dependent on environmental conditions, being able to predict both these factors for hydrated dehydrated state could beneficial in fields climate science, agriculture, palynology. Here, we use deep learning transform images Ranunculus into grains. We a...

A decline in population size can lead to the loss of allelic variation, increased inbreeding, and the accumulation of genetic load through drift. We estimated the fitness consequences of these processes in offspring of controlled within-population crosses from 13 populations of the self-incompatible, clonal plant Ranunculus reptans. We used allozyme allelic richness as a proxy for long-term pop...

Allocation to sexual reproduction is an important life-history trait in clonal plants. Different selection pressures between competitive and competition-free environments are likely to result in the evolution of specialized genotypes and to maintain genetic variation in reproductive allocation. Moreover, selection may also result in the evolution of plastic allocation strategies. The necessary ...