the purpose of this study is calculate the rate of total factor productivity (tfp) growth  of rice varieties for different provinces of  iran and then breakdown it to the changes in a technology, management efficiency and scale efficiency. for this purpose we use the nonparametric method of comprehensive data analysis and malmquist productivity index. the used data include the rice varieties pr...

Glucose-6-phosphate dehydrogenase (G6PD) enzyme catalyses the first step in pentose phosphate pathway (conversion of glucose-6-phosphat to 6-phospho gluconat) which provides cells with pentoses and reduction power in the form of NADPH. In the present study we have analyzed the G6PD gene mutations in 76 patients with a history of favism in Khorasan province in Iran. DNA samples were analyzed for...

tan spot disease of wheat with the causal agent of pyrenophora tritici-repentis is a very serious  disease throughout the world causing severe yield losses. out of 163 isolates of the pathogen, collected from golestan and mazandaran provinces, 58 were selected for a study of population genetic structure. selecting the real representatives from the whole population was carried out according to t...

During the investigation of fungi associated with black (sooty) head mold of wheat and barley in different regions of Golestan, Alborz and Qazvin provinces (Iran) in growing seasons of 2014–15, several isolates with typical characteristics of the genus Harzia Costantin were collected. Based on the morphological characteristics, all isolates were identified as H. acremonioides (Harz) Costantin. 

introduction of high yielding as well as high quality rice cultivars is one of the most important activities at rice research institute of iran (rrii). in 1991, 210 rice lines introduced from international rice research institute (irri) to rice research institute of iran were evaluated in observational and statistical experiments in mazandaran for two years, and seven lines were selected. these...

BACKGROUND In older studies, the seroprevalence of hepatitis A virus infection has been reported to be over 95% in Iranians. Most of these studies were performed on volunteer blood donors. Studies on the general population are sparse. The purpose of this study was to determine the current seroprevalence of hepatitis A virus infection in the general population of Iran. METHODS During 2006, 186...

A survey on mite fauna of bird nests was carried out in Tehran, Golestan and Sistan & Baluchestan provinces in 2008. A total of 18 nests belonging to six bird species, namely Rock Dove Columba livia, House Sparrow Passer domesticus, Eastern Olivaceous Warbler Hippolais (Iduna) pallida, White-eared Bulbul Pycnonotus leucotis, Common Magpie Pica pica and Crested Lark Galerida cristata were collec...

Bacterial blight (Xanthomonas arboricola pv.juglandis) is one of the main diseases of walnut that reduce the yield in the central, western and northern regions of Iran. This disease was first reported form, Qazvin and Mazandaran, then widely reported from northern, central and western provinces. To identify the cause of the disease in different provinces, infected leaves collected from Alborze,...