the cotton-melon aphid, aphis gossypii glover (hom.: aphidiae), is an injuriously important pest of tomatoes in farms and greenhouses. in the greenhouse environment its damage ranks second to whiteflies (trialeurodes vaporariorum westw.). in this research the resistance of nine different tomato cultivars namely: strian, caligen, super bita, super strian, super af1, has2274, gs-12-f1, sun-6200 f...

Barley has a low glycemic index (GI), but it is unknown whether its GI is affected by variation in carbohydrate composition in different cultivars and by food processing and food form. To examine the effect of these factors on GI, 9 barley cultivars varying in amylose and β-glucan content were studied in 3 experiments in separate groups of 10 healthy participants. In Expt. 1, 3 barley cultivars...

sweet cherry (prunus avium l.) is considered as one of the most important temperate zone fruits worldwide. it is an economical fruit with high demand because of its early ripening fruits that enter the market early in the season. most sweet cherry cultivars are self-incompatible, not able to produce commercial fruit without being pollinated with a compatible pollinizer. in the present study, fl...

in order to study of barely and wheat cultivars tolerance to metribuzin, a factorial experiment was conducted as a completely randomized design, with three replications in greenhouse of agricultural research at ferdowsi university of mashhad. treatments included wheat cultivars (backcross roshan, cross arvand, bahar, sepahan, gascosion, sayonez, bam garmsiry, garmsiri, ghods, pishtaz, chamran a...

influence of 13 soybean cultivars (356, m4, m7, m9, clark, sahar, jk, bp, williams, l17, zane, gorgan3 and dpx) on the life table parameters of the cotton bollworm, helicoverpa armigera (hã¼bner) was studied at 25 â± 1â°c, relative humidity of 65 â± 5% and a photoperiod of 16: 8 (l: d) h. the survival rate (lx) of individuals developed to adults from the initial cohort on the mentioned cultivar...

the strawberry spider mite (ssm), tetranychus turkestani ugarov & nikolski, is an important pest of greenhouse cucumber in tropical and temperate regions of the world. the use of the host plant resistance is a basic method to reduce pesticide application in greenhouses. in this study, the biological responses of ssm to six greenhouse cucumber cultivars (puia, hedieh, milad ghadim, milad jad...

the life table parameters of schizaphis graminum (rondani) (hemiptera: aphididae) on four commercial cultivars of wheat (kohdasht, pastor, tajan and zagros) were determined in laboratory conditions. fertility life table were constructed using age-specific survivorship (lx) and age-specific fecundity (mx) and subsequently analyzed using jackknife method and anova. there were significant differen...