Centaurea corymbosa (Asteraceae) is endemic to a small area (< or = 3 km2), and < 500 individuals reproduce in any given year. Nevertheless, enzyme polymorphism was found within and among the six local extant populations, the most distant at 2.3 km. Levels of gene flow among populations and seed and pollen dispersal data indicated very low dispersal capacity. Rarity of long distance dispersal e...

A new γ-lactone named maroccanin (1) together with 5 known compounds : scopoletin (2); 8α-[2’hydroxymethyl-2’-butenoyloxy]-dehydromelitensin (3); 11,13-dehydromelitensin (4); 8α-[2’-hydroxymethyl-2’butenoyloxy]-sonchucarpolide (5) and 5Hα,6Hβ,7Hα,-15-hydroxy-8α-(1’,2’-dihydroxyethyl-acryloxy)-elema1(2),3(4),11(13)-trien-6,12-olide (6), were isolated from the chloroform soluble part of the aqueo...

The plant, Centaurea perrottetii DC (Asteraceae) is a herbaceous thistle-like shrub used in traditional medicine for the treatment of malaria, fever, syphilis, ulcer and skin infections. aim study to isolate elucidate structure compound(s) from C. perrottetii. Quercetin-derivative (an amino-flavone) was isolated n-hexane fraction methanol extract whole plant using combination silica gel column ...

The species of Asteraceae have been found to be a rich source of externally accumulated flavonoid aglycones. This type of compounds attracts the attention, besides for their importance as chemotaxonomic markers, also for their ecological role. In the present study, two local endemic species, Centaurea davidovii and C. parilica, and one widespread species from the same group, C. stenolepis, are ...

The research area in this study is Davda Mountain and its surroundings, located between Karaman the volcanic Karadağ Mountain. Throughout visits during vegetation periods 2013 2019 years, 332 taxa were identified belonging to 44 families 202 genera. Fifty (15.4%) are endemic among plants. order of phytogeographic region elements Iran-Turanian 70 (21.1%), Mediterranean 34 (10.2%) Euro-Siberian 4...

To obtain high yields of winter wheat, it is important to control the contamination crops with weeds. It known that yield losses can be 30% or more due presence segetal vegetation in wheat crops. With intensive technology growing chemical method protection against weeds an extremely element. The paper highlights data on species composition and class agrocenosis. effectiveness herbicides their t...

Fungal endophytes are important in plant ecology and common in plants. We attempted to test cointroduction and host-jumping hypotheses on a community basis by comparing endophytes isolated from invasive spotted knapweed (Centaurea stoebe, Asteraceae) in its native and invaded ranges. Of 92 combined, sequence-based haplotypes representing eight classes of Fungi, 78 occurred in only one of the tw...