Aphids are associated with loss in yield and quality of pepper crop due to damage they cause the transmission viruses a non-persistent manner. The aim study was determine potential border crops intercrops management aphids hot production. Field experiments were carried out for two seasons 2018/2019 at Rubona Research station, Huye District, Rwanda. Maize (Zea Mays L.), sorghum (Sorghum bicolor ...

in order to study the seasonal population fluctuations and density of aphid species (vector of potato viruses) in hamedan province during 1999–2003, four important potato-growing areas (hamedan, kaboudarahang, asadabad, and ghahavand) were studied using, yellow water traps. among collected aphids, four species belonging to aphididae and one to drepanosiphidae were identified in potato fields. i...

Temperature changes are common in nature and insects are particularly exposed and sensitive to such variations which can be potential stresses, ultimately affecting life history traits and overall fitness. Braconids have been widely used to study the effects of temperature on host-parasitoid interactions and the present work focused on the solitary endoparasitoid Aphidius ervi Haliday (Hymenopt...

Two commercial cultivars of tomato, Alta and Peto 95, the accession line number LA716 of Lycopersicon pennellii and lines 94GH-006 and 94GH-033 (backcrosses between Peto 95 and LA716), with different leaf acyl sugar contents were screened for resistance to Bemisia argentifolii Bellows & Perring (corresponding to the Spanish B-biotype of Bemisia tabaci (Gennadius)), in greenhouse- and field-no-c...

In natural habitats plants can be exposed to brief and light contact with neighbouring plants. This mechanical stimulus may represent a cue that induces responses to nearby plants. However, little is known about the effect of touching on plant growth and interaction with insect herbivores. To simulate contact between plants, a soft brush was used to apply light and brief mechanical stimuli to t...

We report here that disruption of function of the ω-3 FATTY ACID DESATURASE7 (FAD7) enhances plant defenses against aphids. The suppressor of prosystemin-mediated responses2 (spr2) mutation in tomato (Solanum lycopersicum), which eliminates the function of FAD7, reduces the settling behavior, survival, and fecundity of the potato aphid (Macrosiphum euphorbiae). Likewise, the antisense suppressi...