نتایج جستجو برای: disease resistance
تعداد نتایج: 1807708 فیلتر نتایج به سال:
determination of drug resistance rate, as a new major problem in patients with typhoid fever is inevitable for treatment of the disease. in a cross-sectional study, during march 1994 till february 1995, a total of 39 patients with typhoid fever admitted to dept. of infections diseases, emam khomeini hospital, and were examined for the rate of resistance to routine drugs usually used for treatme...
Rice cultivar Tarom Dilamani becauded a fragrance, flavor, cooking and marketing is a qualitative rice in Iran. This cultivar have high susceptibility against blast disease (Magnaporthe grisea). One of the important trouble producers of the Dilamani's rice cultivar is chemical control against blast disease and cause poisonous pollution of natural environment. The best manner in order to control...
powdery mildew, caused by blumeria graminis hordei, is currently the most serious foliar disease of barley in worldwide and reduced barley yield. the use of resistant cultivars is an efficient, economical and environmentally way to control of powdery mildew in barley. in this research a half diallel design was used for genetic analysis of resistance to powdery mildew (bgh) in barley. six barley...
melon (cucumismelo) production is significantly affected by fusarium wilt worldwide. the pathogen, fusariumoxysporum f. sp. melonis race 1 (fom1) causes serious economic losses in iran. to find resistance sources of melon, 45 local genotypes and breeding lines, collected from different parts of iran, were screened against race 1 of fom. seedlings were inoculated with a suspension of 1×106 conid...
Rice bacterial blight caused by Xanthamonos oryzae pv. oryzae is one of the most destructive bacterial diseases of rice in some areas of rice cultivation in the world, especially in the tropics of Asia. The low efficiency of disease management methods, especially chemical methods, has led to more research on recognizing resistant cultivars and understanding resistance mechanisms through the stu...
Leptosphaeria maculans causes blackleg disease on Brassica oilseedcrops, which globally is one of the great threats for oilseed production. In order to determine virulence types of this fungi, several isolates were collected from canola fields in Mazandaran and Golestan provinces, Totally 12 isolates were selected and tested by three standard (definitional) cultivars including Westar, Quinta an...
Biological control agents are useful components in the enhancement of plant disease resistance and improvement of soil properties. Effect of biological control agents (BCAs) as a disease control method in plants is hampered by their vulnerability to environmental and edaphic conditions. This study entailed the use of chitosan-silica nanocomposites for delivery of BCAs. Effect of BCAs-nanocompos...
Powdery mildew (Blumeria graminis f. Sp. Hordei) is one of the most destructive foliar diseases in barley that cause yield reduction worldwide. DNA molecular markers can be used to study the genetic diversity and better understanding of genetic predisposition to disease resistance to powdery mildew in barley at early growth stage. Selection of resistance and tolerance need to identify molecul...
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