P olyploidy is a prominent chromosomal/genetical feature in most flowering plant groups (1, 2). Change in the number of chromosome sets (and thus gene dosage) is an important factor in the genesis of new species, in part because plants with higher ploidal levels often have ecological tolerances that differ from those of their progenitors. Plant evolutionists have been very interested in the ori...

By SIR ALFRED YARROW, F.R.S. [Sir Alfred Yarrow's rearrangement of the beds in his Convalescent Home for Children at Broadstairs, as a means of reducing the risk of infection, has attracted a good deal of attention. In the following article Sir Alfred describes the innovation, and the reasons for it. | I T will be seen from the accompanying photograph that the heads of the children are placed a...

BACKGROUND Essential oils, as secondary plant compounds, present a safer alternative to conventional insecticides in insect control programs. So five essential oils including eucalyptus, mint, yarrow, oregano and rosemary oils were evaluated against the brown-banded cockroach Supella longipalpa. METHODS Evaluation was done against the 3rd and 4th instar nymphs using three bioassay methods; co...

PURPOSE Current study is focused on extraction with methanol, purification, labeling with (131)I using iodogen method of the yarrow plant and investigating in vivo biological activity using biodistribution and imaging studies on healthy animal models. The aim of the study is to contribute plant extracts to discover new drugs in the diagnosis and treatment of several diseases. METHODS Nine fem...

The relevance of the research lies in need to involve feed production grass species containing biologically active substances for use as natural animal growth stimulants. purpose study was experimentally establish economic and biological value medicinal fodder species, their technological suitability growing clean crops, obtaining raw materials forming phyto-mixtures from them organic additives...

Sesquiterpene lactones (SLs), mainly those with an activated exocyclic methylene group, are important allergens in Asteraceae (Compositae) plants. As a screening tool, the Compositae mix, consisting of five Asteraceae plant extracts with allergenic potential (feverfew, tansy, arnica, yarrow, and German chamomile) is part of several national patch test baseline series. However, the SL content of...