Achillea biebersteinii is a perennial herbaceous medicinal plant that belongs to Compositae family with useful properties, such as: anti-diaphoretic, antihemorrhagic, antiinflammation, antibiotic, antifungal and antioxidant effects. The objectives were; to determine the composition of essential oil components with the use of GC and GC/MS. Forty–two components were found and 98% of the identifie...

The extensive use of heavy metals and nanoparticles (NPs) has led to their release into the environment that might have negative impacts on both organisms and the environment. In this study, the molecular responses of wheat seedlings to silver nitrate and silver nanoparticles (AgNPs) were assessed by transcript accumulation analysis of genes coding for products potentially involved in heavy met...

To elucidate how physiological and biochemical mechanisms of chilling stress are regulated by abscisic acid (ABA) pretreatment, pepper variety (cv. 'P70') seedlings were pretreated with 0.57 mM ABA for 72 h and then subjected to chilling stress at 10°/6°C (day/night). Chilling stress caused severe necrotic lesions on the leaves and increased malondialdehyde and H(2)O(2) levels. Activities of mo...

In Arabidopsis (Arabidopsis thaliana), trehalose is present at almost undetectable levels, excluding its role as an osmoprotectant. Here, we report that overexpression of AtTPS1 in Arabidopsis using the 35S promoter led to a small increase in trehalose and trehalose-6-P levels. In spite of this, transgenic plants displayed a dehydration tolerance phenotype without any visible morphological alte...

Newly germinated seedlings are vulnerable to biomass removal but usually have at least 6 months grow before they exposed dry-season fires, a major disturbance in savannas. In contrast, plants browsers from the time germinate, making browsing potentially very powerful bottleneck for establishing seedlings. Here we assess resilience of 10 savanna tree species topkill during first growth. seeds fo...

Somatic embryogenesis (SE) cloning techniques for Nordmann fir Christmas tree production have been pursued and refined in Denmark, three SE clonal trials with 201 clones from seeds of 27 trees seedlings bulk harvest Georgia, Caucasus, were established 2014 to 2015. This study was the first evaluate genetic performance these different sites. In addition, (zygotic) normal field compared this stud...

In this study, the efficiencies of seed priming with electromagnetic field (0, 2, 4, and 6 mT; 30 minutes daily for 3 days) were investigated in Salvia nemorosa. The exposure to electromagnetic filed led to significant increases in biomass accumulation (mean=53.6 %). Electromagnetic filed treatments significantly increased K, Ca, Mg, and Fe contents in leaves by mean 39.5 %. The electromagnetic...

Fertilization at planting with GromaxTM teabags did not affect survival of Douglas-fir, Engelmann spruce or lodgepole pine seedlings. Fertilized seedlings were taller and had larger stem diameters in the second year after planting, but this effect had disappeared by year five. In year nine, the proportion of seedlings that had reached free growing was similar in fertilized and unfertilized trea...

Histological studies of roots of Vicia faba and of Zea mays seedlings grown from seeds given a medium dose of soft x-rays, indicate considerable distortion and irregularity about the apical meristem and surrounding tissues after the first week of germination (7, 8). These are not apparent during the early part of germination when the radicles first appear; the meristem is relatively normal in a...