Feulgen bands can be obtained at the sites of constitutive heterochromatin in the chromosomes of Anemone blanda, Fritillaria lanceolata and Scilla siberica, simply by means of a short or extended acid hydrolysis. Extended hydrolysis gives positive bands in A. blanda and F. lanceolata and negative bands in S. siberica. Short hydrolysis gives no bands in A. blanda and S. siberica but gives negati...

Regal Fritillary (Speyeria idalia) primarily inhabits prairie, a native grassland of central North America, and occurs rarely in nonprairie grasslands further east. This butterfly has experienced widespread decline and marked range contraction. We analyze Regal Fritillary incidence and abundance during 1977-2014 in 4th of July Butterfly Counts, an annual census of butterflies in North America. ...

Fritillaria is a perennial herb with medicinal properties. There are 158 species worldwide, 33 of which have reported therapeutic efficacy. Alkaloids the principal constituents in Fritillaria. growing at 2700–4000 m sources extract namely Chuan Beimu (the Pharmacopoeia People’s Republic China, 2020 Edition), low biomass, mainly containing more 5?-cevanine isosteroidal alkaloids cis-configuratio...

The widespread use of pesticides poses significant risks to food and environmental safety. Imidacloprid is one the most effective neuroactive neonicotinoid insecticides against a broad spectrum piercing–sucking pests. A rapid, efficient, high-throughput analysis method for determination imidacloprid was developed in four minor crops with six matrices (bamboo shoot, winter jujube, fresh dry D. o...

The current study aims to estimate the most frequent number of nucleoli in taxonomically interesting Fritillaria species. Silver nitrate staining is applied using a modified protocol 14 taxa and one hybrid from 17 populations Greece. This first report for all studied here. In general, ranges 0-8, with pontica F. theophrasti characterised by greatest observed nucleoli. results reinforce classifi...

Species living in highly fragmented landscapes often occur as metapopulations with frequent population turnover. Turnover rate is known to depend on ecological factors, such as population size and connectivity, but it may also be influenced by the phenotypic and genotypic composition of populations. The Glanville fritillary butterfly (Melitaea cinxia) in Finland uses two host-plant species that...