To determine dominant factors on arsenic leaching from the coal fly ash, arsenic leaching test under a constant pH was performed. Twelve fly ash samples were collected from two coal fired power plants (600 MWe) having different boiler types. Arsenic in the raw coal was almost all associated with the fly ash in both power plants; however arsenic leaching fraction was strongly differed in boiler ...

A notable amount of medicinal plants grow in Iran and local communities in different parts of the country have developed a deep knowledge of various uses of plants during their old history. Several ethnobotanical studies have been conducted by the Traditional Medicine and Material Medica Research Center (TMRC) to investigate the use of medicinal plants by local people. Some of these studies hav...

We examined whether extensive dry season dieback and mortality in a South African fynbos community were due to drought or pathogen attack. Plant dieback and mortality have been reported elsewhere in similar plant communities suggesting potential for a widespread climatic or biotic threat to this community.We collected tissue samples from Brunia noduliflora, the dominant plant in the community, ...

We examined whether extensive dry season dieback and mortality in a South African fynbos community were due to drought or pathogen attack. Plant dieback and mortality have been reported elsewhere in similar plant communities suggesting potential for a widespread climatic or biotic threat to this community.We collected tissue samples from Brunia noduliflora, the dominant plant in the community, ...

The maize lesion mimic gene Les22 is defined by dominant mutations and characterized by the production of minute necrotic spots on leaves in a developmentally specified and light-dependent manner. Phenotypically, Les22 lesions resemble those that are triggered during a hypersensitive disease resistance response of plants to pathogens. We have cloned Les22 by using a Mutator-tagging technique. I...

Heavy metal pollution is a worldwide problem. This study was conducted in a turquoise mine in Nyshabour (Iran) to find accumulator plant(s). Concentrations of metals were determined both in the soil and the plants growing in the mine. Concentrations of total K, Ca, Na, Mg, Mn, Zn, Fe and Cu in the mine area were higher than the control soil. The results showed that four dominant vegetations nam...

Genotypes of burley (cultivars B-21 and B-49), flue-cured (line VA-81 and cultivar PD-4), and Connecticut broadleaf (cultivar C9) tobacco (Nicotiana tabacum) resistant (R) or susceptible (S) to the tobacco cyst nematode Globodera tabacum tabacum were crossed. F1 progeny of burley and susceptible broadleaf were selfed and backcrossed to produce additional progeny for evaluation of resistance in ...

Heterodera glycines is the most damaging root pathogen of soybean in the United States. Plant introduction (PI) 90.763 is resistant to both races 3 and 5, whereas PI 424.595 is resistant only to race 5. Genetic relationships in these PI lines for resistance to H. glycines are not known. Crosses between PI 90.763 and PI 424.595 and susceptible cv. Essex were studied in the F, F, and F generation...