good perception of relation-sheep among plant morphological traits and resistance to fusarium head blight of wheat is quite effective to make a good success in plant breeding project. in this experiment this relation has been checked out. the morphological traits were included plant height, peduncle length and spike density. we used 28 spring wheat genotypes and 2 durum genotypes. there was sig...

Nineteen safflower genotypes (Carthamus tinctorius L.) that originated from different geographical regions were screening for their response to infection with Macrophomina phaseolina, the charcoal rot pathogen at the research farm of Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran, in 2005. The plants were evaluated for length and width of necrotic lesion at the e...

Clusterbean [Cyamopsis tetragonaloba (L.) Taub is an arid and semi-arid legume crop belonging to the family leguminaceae. It a drought enduring leguminous because of its profound tap rooting system has high capability get well from water stress. Total fifty-nine varieties/genotypes clusterbean were screened under artificial Inoculation field conditions at College Research Farm, Agriculture, Bik...

The predominant root-knot nematode in New Zealand pastures is Meloidogyne trifoliophila, and a recurrent selection program in Trifolium repens has developed resistance to this species. No data are available, however, on the mechanisms of resistance in T. repens or resistant genotypes of T. semipilosum. The development of M. trifoliophila in roots of T. repens and T. semipilosum was examined wee...

background and objectives : hepatitis c virus genotyping appears to be vital for predicting the response to antiviral therapy. the present study aimed to analyze the hcv genotypes in relation to persistence or clearance of the virus in residents of hamadan province, west-iran. material and methods : a total of 1159 recorded questionnaires of hcv infected people were evaluated in this prospectiv...

the fungal disease, ascochyta blight, caused by ascochyta rabiei is a major yield limiting factor of chickpea (cicer arietinum l.) in many countries, including iran. identification of resistance sources against races or pathotypes of the fungus causing this disease is required for breeding resistant chickpea cultivars. reaction of six selected genotypes of iranian chickpea collection was evalua...

This study was conducted to investigate the resistance of 4 wild eggplant species (Solanum aethiopium group Aculeatum, S. incanum, macrocarpon, linnaeanum), 3 cultivated varieties (‘Anamur F1’, ‘Pala’, ‘Yamula’), 1 rootstock (KĂśksal F1) and 34 interspecific hybrids Verticillium dahliae Kleb. Fusarium oxysporum f.sp. melongenae. Disease genotypes determined by pathogenicity test. The disease se...

The nucleotide at position 1858 of hepatitis B virus has importance in chronic hepatitis B (HB) because a cytosine at nt 1858 effectively prevents virus escape through the precore TAG stop codon mutation. The relatedness between nt 1858 and genotypes was analyzed using a new genotyping method based on restriction fragment length polymorphism (RFLP) analysis of an S gene amplicon. Seventy-three ...

abstract this study was conducted to evaluate the resistance of 70 genotypes of barley to powdery mildew. after preparing the samples contaminated with powdery mildew, reproduction of the spores of the fungus was conducted on susceptible cultivar afzal. the experiment was conducted with randomized block design in pot in greenhouse. seedlings were inoculated with the spores fungus in two-leaf st...