Acta Entomologica Sinica (1997) 40, S196-S202

Julian Chen, Hongjian Ding, Zhijian Li, Hanxiang Ni and Jingrui Sun (1997)
[A comparison study on penetration behaviour of wheat aphids on wheat cultivars with different resistant levels]
Acta Entomologica Sinica 40 (Supp.), S196-S202
Abstract: In this study, the stylet penetration behaviours of Sitobion avenae F. and Rhopalosiphum padi L. on wheat cultivars with different degrees of resistance were recorded with EPG (Electrical Penetration Graph) technique. Results showed the specific wave patterns of aphid penetration on the four tested cultivars (Hongmanghong, Xiaobaidongmei, kok-1679 and L₁) were almost similar, but there were differences in the start time, repeats and duration. The time for the first appearance of E₁ [N] and the rate of total duration of E₂ to total recording time (E₂%) could be taken as the main physiological parameters accociated with the cultivars resistance. Based on the major wave patterns' parameters, the cluster analysis was used to distigush resistant levels of the tested cultivars and the result was fit basically with the life table parameters in lab and the evaluation in field. In the end of this article, the.possible location of the resistant factors, function in resisatant evaluation by EPG and factors affecting EPG recording were discussed briefly.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Ju Lian Chen

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Sitobion avenae	Wheat (Triticum)
	Rhopalosiphum padi	Wheat (Triticum)