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Effect of Fabiana imbricata constituents on Rhopalosiphum padi and Heliothis zea
(John Wiley & Sons, Ltd., 2008)
Effect of gramine in the resistance of barley seedlings to the aphid Rhopalosiphum padi
(1986)
Gramine (N,N‐Dimethyl‐3‐aminomethylindole) content in various barley cultivars varied from 0 to 2.6 mmoles/kg fresh weight. Those cultivars which were lacking gramine were the most susceptible to the aphid Rhopalosiphum ...
Hydroxamic acids affecting barley yellow dwarf virus transmission by the aphid Rhopalosiphum padi
(1991)
2,4‐Dihydroxy‐7‐methoxy‐1,4‐benzoxazin‐3‐one (DIMBOA), a hydroxamic acid (Hx) occurring in wheat, was shown to deter feeding by the aphid Rhopalosiphum padi (L.), and to reduce BYDV transmission to the plant. Dual choice ...
Effect of Fabiana imbricata constituents on Rhopalosiphum padi and Heliothis zea
(1995)
The main secondary metabolites of Fabiana imbricata showed toxicity towards the greenbug Rhopalosiphum padi when administered in an artificial diet. A dose‐dependent toxicity was observed for fabiaimbricatan‐15‐oic acid ...
Costs and benefits of hydroxamic acids-related resistance in winter wheat against the bird cherry-oat aphid, Rhopalosiphum padi L.
(Association of Applied Biologists, 1996)
Estimations of infestation by the bird cherry-oat aphid (Rhopalosiphum padi) as well as measurements of grain yield in 26 Hungarian winter wheat cultivars under field conditions were correlated with the concentration of ...
Effects of DIMBOA on detoxification enzymes of the aphid Rhopalosiphum padi (Homoptera: Aphididae)
(Elsevier Ltd, 2003)
The presence of glutathione transferases and esterase activity was investigated in Rhopalosiphum padi and the effects of the cereal hydroxamic acid, 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA) on these detoxification ...
Interspecific recognition through odours by aphids (Sternorrhyncha: Aphididae) feeding on wheat plants
(Czech Academy of Sciences, 1997)
In olfactometric experiments a wingless adult of Sitobion avenae was attracted by odours of a wingless adult of Rhopalosiphum padi feeding on a wheat plant. When the stimulus consisted of either a wingless R. padi without ...
Presence of a hydroxamic acid glucoside in wheat phloem sap, and its consequences for performance of Rhopalosiphum padi (L.) (Homoptera: Aphididae)
(Kluwer Academic Publishers-Plenum Publishers, 1994)
Phloem sap of wheat seedlings differing in whole leaf hydroxamic acid (Hx) concentrations was collected by cutting stylets of feeding aphids. DIMBOA-glucoside was the only Hx-related product found. Concentration of ...
Proteinase inhibitor accumulation in aphid-infested barley leaves
(1998)
Proteinase inhibitors (chymotrypsin and trypsin inhibitors) accumulation in barley leaves was studied when the plants were infested with the aphids Schizaphis graminum and Rhopalosiphum padi. Aphid infestation resulted ...
Occurrence of diboa in wild Hordeum species and its relation to aphid resistance
(1991)
The secondary metabolise 2,4-dihydroxy-1,4-benzoxazin-3-one (DIBOA) was found in seedlings of wild Hordeum species, but not of cultivated barley (Hordeum vulgare). DIBOA levels correlated negatively with performance of the ...