in order to study the effect of salt stress at different growth stages on physiological characteristics and enzyme superoxide dismutas (sod) activity in wheat genotypes a green house experiment was conducted at the agricultural research greenhouse, agricultural, medical and industrial research school, nuclear science and technology research institute of karaj. a split factorial design on the ba...

Lichens can survive and cope with unsufficient water supply resulting in low intrathalline relative content. Under such conditions, photosynthesis is negatively affected by different degree of dehydration. In our study, fully hydrated samples Xanthoria elegans, Umbilicaria decussata Usnea aurantiaco-atra were light-acclimated during following desiccation from a to dry state, steady-state chloro...

Water plays a crucial role in maintaining plant functionality and drives many ecophysiological processes. The distribution of water resources is continuous change due to global warming affecting the productivity ecosystems around globe, but there lack non-destructive methods capable monitoring leaf content that would help us understanding consequences redistribution water. We studied utilizatio...

abstract- to investigate the effect of draught stress on water relations, stomatal density, chlorophyll content and yield of rapeseed, an experiment was done with four levels of drought stress including l1 (field capacity, fc), l2 (70% available water content, awc), l3 (50% awc), and l4 (30% awc), within three growth stages- including stem elongation (t1), onset of flowering (t2) and silique fo...

despite the importance of drought stress in early stage of growth and plant establishment, it has usually been neglected as selection criteria in breeding programs. therefore, a population of recombinant inbred line derived from the cross “babax/seri m82” and their two parents were studied. the experiment was conducted in two randomized complete block designs with two replications under osmotic...

Jodhpur is the second largest district in state of Rajasthan. With growth population numbers vehicles along with industries have increased which affecting air quality Jodhpur. Plants a very close relationship nature and they act as sink for reducing pollution. Impact pollution on two plants namely Tabernaemontana Sesbania (vegetable humming bird tree) from heavy industrial area si...

Some cucurbit plants (Cucumis sativus L., Cucurbita pepo Cucumis melo L. and Citrillus lanatus L.) were used for investigating some physiological changes protein patterns under heat stress in plants. Leaf samples exposed tohigh temperatures as follows 35, 40, 45, 50, 55 60°C. Percentage of ion leakage, chlorophyll content, leaf relative water content (RWC) loss turgidity, total soluble (TSP) pr...

This study was carried out to evaluate drought stress tolerance in Thymus kotschyanus accessions using a factorial experiment based on a Completely Randomized Design (CRD) with 5 replications during 2013-2014 in Qom, Iran. The first factor was the accession with 17 levels and the second factor was drought stress with three levels of irrigation including 80% (control), 60% and 40% Field Capacity...

Hydrogen peroxide (H2O2) is an essential signaling molecule that mediates plant responses against several biotic and abiotic stresses. H2O2 pretreatment has emerged as a signaling way, inducing salt stress acclimation in plants. Here, we analyzed the effects of H2O2 leaf pretreatment on the non-enzymatic defense system (ascorbate and glutathione), plant growth, relative water content (RWC), rel...