Background: It is generally assumed that short-term population dynamics are too slow to be influenced by evolution. Question: Can evolution occurring within only weeks (four to five generations) impact concurrent population dynamics? Organism: Green peach aphid (Myzus persicae) growing on an undomesticated host (Hirschfeldia incana). Aphid clones were collected from a single wild population. Si...

The quality of grey alder logs (Alnus incana) was studied by sawing sample logs from two different forests in November 1995–February 1996. For grading of grey alder logs and sawn timber the proposed system of Keinänen and Tahvanainen (1995) plus the reject -grade was used. In general, grey alder logs have knots from the base to the top. All types of knots appear, and the length of the knot-free...

There are four alder species native to Europe: the common alder (Alnus glutinosa), the grey alder (A. incana), the Italian alder (A. cordata) and the green alder (A. viridis). In general, members of the genus Alnus are pioneer species, able to colonise bare, open ground rapidly and with a great ability to tolerate wet sites. The roots have specialised nodules which fix atmospheric nitrogen as a...

Isolated T4 phage DNA (sigma=1.694 g/ml) is applied to seedlings of the crucifer Matthiola incana (DNA density sigma=1.698 g/ml). The phage DNA can partly be reextracted from the plants in a specific DNA fraction, which is predominantly characterized by its unusual high density (high density complex=HDC; sigma=1.724 g/ml). DNA:DNA hybridization studies show that phage specific DNA sequences are...

Three new phenylethanoid glycosides, incanoside C, incanoside D and incanoside E were isolated together with one known glycoside, beta-D-fructofuranosyl-alpha-D-(6-O-[E]-sinapoyl) glucopyranoside from the whole plant of Caryopteris incana (THUNB.) Miq. On the basis of chemical and spectral analyses, the structures of the new compounds were elucidated to be 1-O-(3,4-dihydroxyphenyl)ethyl-O-beta-...

Bark structure of Polylepis incana (Sanguisorbeae, Rosaceae) is described and compared with that in related genera Cliffortia Leucosidea. Tribe Sanguisorbeae shows an extraordinary diversity bark abscission patterns. The outermost portions are peeling off along the non-conducting secondary phloem (Leucosidea, ruscifolia), or periderm (C. strobilifera). protective function performed by phellem (...

This research work details analysis of the coenopopulation structure 13 plants various species in Yakutia and compares them with characteristic spectra types their species. The plant coenopopulations was investigated from 2003 to 2019 Central Yakutia. left-sided centered ontogenetic are found perennial simple ontogenesis shallow rejuvenation which were studied. spectrum is basic these coenopopu...