Phytoplasma infections are able to limit the lettuce growth around world. The alterations of biochemical contents in host physiology following phytoplasma infection remain be elucidated. In this study, changes total protein and chlorophyll content, proline, malondialdehyde (MDA) accumulation, peroxidase (POD) catalase (CAT) enzyme levels were investigated leaves plant after Candidatus asteris i...

in order to study the effects of ascorbic acid as an important antioxidant reducing salinity damage, an experiment was conducted on two althernantera genotypes (“entire leaf” and “undulated leaf”) at research greenhouse of shahid chamran university in 2013. concentrations of 0, 0.5 and 1 mm of ascorbic acid were sprayed weekly on plants grown under 0, 30, 60, 90 mm nacl. the experiment was carr...

the process of adaptation to cold is an important mechanism in wheat cultivars to tolerate cold stress. this work was aimed to calrify the relationship between vernalization requirement with cold tolerance by assessing physiological changes in cold susceptible spring and tolerant winter wheat (triticum aestivum, cvs. kohdasht and cheyyene, respectively) in environmentally controlled conditions,...

in order to investigate the effect of cycocel on different growth aspects of two olive cultivars (mary and mission), a greenhouse experiment was conducted taking into account three factors of: cycocel at three levels (0, 500 and 1000 mg l-1), drought stress of three levels (irrigated at 5, 10 and 15 days intervals) and two olive cultivars (mary and mission) in a factorial experiment based on ra...

In the present study, morphological and physiological responses of cocoa provenances to watering regimes under screen house conditions implications measured variables as drought tolerance strategy in Theobroma was discussed. A 4 by 3 factorial scheme involving four cacao (well at full field capacity, 60 40% capacity: 1.5, 0.9 0.6 L/plant each event) genotypes evaluated are PA 150 Series (the el...

environmental pollution consists of different types of pollutants in air, soil, and water. due to the fact that plants can respond to environmental pollution, they can be used as bio-indicators for environmental monitoring. air pollution in areas with oil and gas refineries nearby is an important problem. this study aims to survey the effects of gas refinery air pollutants on conocarpus erectus...

information of heavy metal toxicity about physiological aspect of lettuce is limited. therefore an experiment was conducted in crd designed with 7 replications on lettuce (lactuca sativa l.). treatments were cadmium in 3 concentration (0, 2 and 4 mg/l) added to hoagland solution. results were shown that increasing in cadmium of nutrient solution caused increasing in sod, pod antioxidant and pro...

The growth and development of the silkworm, Bombyx mori cocoon crop are influenced by yield nutritional value mulberry leaf used as feed. It is true that there disparities in quality between genotypes, which explain variations silkworm rearing. present study genotypes S1635, S164, S13, Chinese White, Chak Majra, C4, G4, C2038, V1 K2 to estimate several biochemical components tender leaves. Lowr...

Salt stress strongly affects on plant growth and development, especially maize plant, which is reported as a salt sensitive species. The salt tolerant identification in the large genetic resources and breeding population is a profitable research topic for solving the salinity problem. Two maize cultivars, viz., sweet (Zea mays L. cv. Saccharata) and waxy (Z. mays L. cv. Ceratina) seedlings were...

The transport of pesticides from application areas to other results in pesticide contamination and this sort has led unexpected environmental problems worldwide. It is important determine the responses phytoplanktonic organisms these chemicals for an understanding effects on aquatic ecosystems. In study, Arthrospira platensis Gomont cyanobacteria were exposed different concentrations cypermethr...