| rice brown spot and susceptibility of some cultivars in north of iran. | rice brown spot is one of the important diseases in the world including iran. 91 samples of the infected plants such as leaves and panicles were collected from different locations of guilan province, north of iran and the fungi isolated and studied for pathogenicity. three species of bipolaris (b. oryzae, bipolaris sp. and b. cf. victoriae) were isolated more than other species with serious effects on the plants respectively. reactions of 8 cultivars of rice, neda, nemat, sepeed-rood, bejar, kha ... | 2002 | 12701419 |
| diazinon resistance in different selected strains of chilo suppressalis (lepidoptera: crambidae) in northern iran. | asiatic rice borer, chilo suppressalis (walker) (lepidoptera: crambidae), is a cosmopolitan and destructive pest in rice fields of the world. this pest was reported in 1973 in iran, and it has since spread widely in rice, oryza sativa l., fields throughout the country. in this study, we tried to evaluate comparative toxicity of diazinon in five colonies of c. suppressalis, collected from babol (ba), amol (am) of mazandaran province and rasht (ra), sheikhmahale (sh), and gourabzarmikh (go) of gui ... | 2009 | 19610437 |
| fertility status and distribution of mating type alleles of the rice blast fungus, magnaporthe grisea in northern iran. | this study was carried out using 155 monoconidial isolates collected from different areas of two major rice growing provinces in northern iran, including 94 isolates from guilan and 59 isolates from mazandaran. among 94 isolates from guilan, 92 and two isolates recovered from rice and crabgrass (digitaria sp.), respectively. all 61 rested isolates from mazandaran were recovered from rice. all isolates were evaluated for in vitro sexual fertility and mating type status by pairing with mat 1-1 and ... | 2004 | 15756836 |