نتایج جستجو برای: rusts
تعداد نتایج: 268 فیلتر نتایج به سال:
tak-ab is a new winter bread wheat cultivar developed from evaluation of icarda-turkey-cimmyt international bread wheat germplasm to supplementary irrigation areas. study of new cultivars under supplementary irrigation in maragheh and ardebil research stations (2005-2012) showed that, tak-ab had high grain potential under supplementary irrigation conditions. based on results means of grain yiel...
The Dasypyrum villosum gene bank collection, comprising 32 accessions, was characterized morphologically and genetically for resistance to leaf diseases quality parameters of seeds with specific accent protein polymorphism starch composition. collected material represented nearly the whole distribution area in Mediterranean. For SSR analysis, a set 40 markers wheat selected. A matrix distances ...
durum wheat due to its quality is an important crop in feeding and economics. saji is a newly released durum wheat cultivar with a mean yield of 2824 kgha-1 which was higher than the two durum wheat (zardak) and bread wheat (sardari) check cultivars in different yield traits conducted during 2000-2008 cropping seasons in iran. its grain yield was 23% and 11% higher than those of zardak and sard...
Inheritance studies on the nonhost resistance of plants would normally require interspecific crosses that suffer from sterility and abnormal segregation. Therefore, we developed the barley-Puccinia rust model system to study, using forward genetics, the specificity, number, and diversity of genes involved in nonhost resistance. We developed two mapping populations by crossing the line SusPtrit,...
The usefulness of mixtures (multiline cultivars and cultivar mixtures) for disease management has been well demonstrated for rusts and powdery mildews of small grain crops. Such mixtures are more useful under some epidemiological conditions than under others, and experimental methodology, especially problems of scale, may be crucial in evaluating the potential efficacy of mixtures on disease. T...
Stripe rust caused by the fungus Puccinia striiformis f.sp. tritici (Pst) is a major constraint to wheat production worldwide. The molecular events that underlie Pst pathogenicity are largely unknown. Like all rusts, Pst creates a specialized cellular structure within host cells called the haustorium to obtain nutrients from wheat, and to secrete pathogenicity factors called effector proteins. ...
Outdoor allergenic fungal spores: comparison between an urban and a rural area in northern Portugal.
BACKGROUND The frequency and concentration of many airborne fungal spores associated with respiratory allergy symptoms are influenced by geographical and climatic characteristics. OBJECTIVE The aim of this work was to monitor the distribution of 11 potentially allergenic fungal spore types in 2 regions with different urbanization levels in Northern Portugal: Porto (urban area) and Amares (rur...
Design and operation of Fe0 permeable reactive barriers (PRBs) can be improved by understanding the long-term mineralogical transformations that occur within PRBs. Changes in mineral precipitates, cementation, and corrosion of Fe0 filings within an in situ pilot-scale PRB were examined after the first 30 months of operation and compared with results of a previous study of the PRB conducted 15 m...
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