biology of macrosiphoniella sanborni ( hom.: aphididae )on chrysanthemum in field and laboratory conditions

بررسی ویژگی های زیستی شته ی (Macrosiphoniella sanborni ( Hom.: Aphididae روی گل داودی در شرایط طبیعی و آزمایشگاهی

Evaluation of Population Density and the Impact of Aphid (Macrosiphoniella Sanborni) on Morpho-Physiological Traits of Different Chrysanthemum (Chrysanthemum Morifolium) Cultivars

Chrysanthemum aphid (Macrosiphoniella sanborni) is one of the most important pests of chrysanthemum (Chrysanthemum morifolium); while there is little information about the interaction of chrysanthemum and chrysanthemum aphid. In the present study, interaction of different chrysanthemum cultivars and aphid populations was assessed through evaluation of morpho-physiological traits. For this purpo...

بررسی شته های گلهای زینتی در مشهد و مطالعه بیولوژی شته داودی macrosiphoniella sanborni (gillette) (hom: aphididae)

بررسی حاضر شامل شته های جمع آوری شده گلهای زینتی منطقه مشهد می باشد، که طی سالهای 1378-79 انجام گرفت . در این مطالعه از تعدادی گلهای زینتی شامل گلایول، داوودی، ختمی، میخک ، گل کاغذی، شب بو، ناز، به ژاپنی، یاس زرد، ژربرا، سینرا، اطلسی، رز، میمون، خشخاش ، خرزهره، تاج خروس ، آهار، همیشه بهار و طاووسی، نمونه برداریهایی انجام شد. از روی این میزبانها تعداد 11 گونه شته شناسایی شدند که اغلب پلی فاژ بود...

biology of sugarcane whitefly, neomaskellia andropogonis corbett (hom., aleyrodidae) on four sugarcane cultivars under laboratory conditions

the damage of sugarcane whitefly,neomaskellia andropogonic corbett, has recently increased dramatically in sugarcane fields in khuzestan province. in this study, biology of n. andropgonis on four sugarcane commercial cultivars was evaluated under laboratory conditions. in this experiment, the preimaginal development, adult longevity and fecundity were studied in a growth chamber that was set at...

Metapopulation structure of the specialized herbivore Macrosiphoniella tanacetaria (Homoptera, Aphididae).

We investigated population dynamics, genetic diversity and spatial structure in the aphid species Macrosiphoniella tanacetaria, a specialist herbivore feeding on tansy, Tanacetum vulgare. Tansy plants (genets) consist of many shoots (ramets), and genets are grouped in sites. Thus, aphids feeding on tansy can cluster at the level of ramets, genets and sites. We studied aphid population dynamics ...

the effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)

cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...