vetiver grass is known to survive under diverse soil and water conditions. in order to test its potential of salinity and aridity tolerance ability, the effect of salinity and aridity stress on the growth of the vetiveria zizanioides was studied by growing plants in arid soils that receiving salinity stress. the experiment was conducted in a greenhouse, arrangement in a completely randomized de...

The paper presents the results of geographical analysis dendroflora Cheboksary. landscaping system Cheboksary is represented mainly by woody vegetation, which grows in public areas, limited-use plantings, as well along streets and main highways Woody vegetation 73 species, which, according to generally accepted systematics plants, belong 43 genera 20 families. based on archaeological data from ...

Environmental stresses come in many forms, yet the most prevalent stresses have in common their effect on plant water status. The availability of water for its biological roles as solvent and transport medium, as electron donor in the Hill reaction, and as evaporative coolant is often impaired by environmental conditions. Although plant species vary in their sensitivity and response to the decr...

It is difficult to overestimate the importance of cereals in functioning natural ecosystems and their use for human life. They often play role dominants edifiers composition plant cover, primarily herbaceous types vegetation. But they also take part forest phytocenoses different zones. Within Ukraine, Poaceae family includes 71 genera (of which only 4 are culture) 208 species 15 [20]. The cerea...

Selaginella (Selaginellales, Selaginellaceae) is the most speciose genus of lycophytes and, with approximately 750 recognized present-day species, also one largest genera vascular plants. However, evolutionary history this species richness remains largely unresolved. Recent research suggests that was diverse already in mid-Cretaceous and shows S. subg. Stachygynandrum dates back at least to inc...

Eight Pleistocene wood rat middens at elevations of 1200, 880, and 600 meters in the Chihuahuan Desert contain abundant macrofossils of pinyon pine, juniper, shrubby liveoak, and Opuntia, together with smaller quantities of Agave lecheguilla and other xerophytes of existing desert vegetation, which in dicate a xerophilous woodland vegetation in the lowlands, as much as 800 meters below existing...