Desiccation tolerance (DT) is the ability of an organism or structure to dry completely and subsequently survive in that air-dry state. Hornworts are excellent plant models study desiccation effects as they have contrasting life histories which likely associated with DT. We tested whether (1) epiphytic species had more efficient DT responses drying postrehydration than non-epiphytic (2) “green”...

Lichens from polar regions are well adapted to low temperature and considered cryoresistant. However, interspecific differences in their cryoresistance exist according the degree of adaptation severity environment. In our study, we applied linear cooling technique order evaluate several lichen species. Thalli segments Umbilicaria antarctica, Nephroma Placopsis contortuplicata Lasallia pustulata...

Salinity is the second major obstacle after drought conditions that hinder high productivity of plants. Many factors contribute to salinity problem, consequently affects plant physiology, growth as well production. Therefore, this research aims determine effects betaine-rich Nano fertilizer on physiological parameters sweet corn (Z. mays var. saccharata) and A. thaliana under salt stress. In st...

Soil salinity is one of the most important environmental factors threatening agriculture on a global level. Plants show differences in resistance to salt stress, both terms species and variety. The aim study was determine effect stress photosynthetic efficiency activity plants two barley varietie—KWS Irina RGT Planet. grown pot experiment were subjected soil treatment with sodium chloride (NaCl...

Tropical areas have a large distribution of saline soils and tidal flats with high salinity level. Salinity stress is key factor limiting the widespread use tropical forage such as Stylosanthes guianensis (Aubl.) Sw. This study was designed to screen tolerance 84 S. accessions; In greenhouse experiment, plants were subjected Hoagland solution or 200 mM NaCl for up 15 days. tolerant accession CI...

Opuntia plants grow naturally in areas where temperatures are extreme and highly variable in the day during the entire year. These plants survive through different adaptations to respond to adverse environmental conditions. Despite this capability, it is unknown how CAM photosynthetic activity and growth in Opuntia plantlets is affected by constant heat or cold. Therefore, the main objective of...

drought is one of the most important factors limiting growth and yield in many parts of the world. in order to evaluate the effects of drought stress on some morphological and physiological traits of two cultivars of bean, two red beans (derakhshan and goli) in four drought treatments including 25%, 50%, 75%, control 100% field capacity were studied in a factorial experiment based on complete r...