Acta Entomologica Sinica (2008) 51, 774-777

Sen-Shan Wang, Yong-Xia Xu, Zhi-Zhong Cao, Shan-Li Shi and Chen-Gui He (2008)
[Effects of alfalfa varieties on the survival rate and fecundity of Therioaphis maculata (Buckton) (Hemiptera : Aphidae)]
Acta Entomologica Sinica 51 (7), 774-777
Abstract: Effects of four alfalfa varieties on survival rate and fecundity of Therioaphis maculata (Buckton) were investigated at 25^°C in the laboratory. The results showed that the survival rates of the aphid in the 3-leaf, 6-leaf and adult stages were the lowest in HA-3 (8.00% ± 1.15%, 21.27% ±7.40%, and 17.07% ± 3.03%, respectively), and the highest in Hu (25.63% ± 3.68% , 42.27% ± 2.76%^, and 55.10 % ± 0.19% respectively). The survival rate was lower in seedling stage than in adult stage The level of alfalfa resistance was in the order of HA-3 > G3 > JH > Hu using the innate capacity of increase (r_m) and the nymph survival rate as the indices of alfalfa antibiosis to the aphid, and this is correspondent well with that in fields.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Therioaphis trifolii	Alfalfa/lucerne (Medicago sativa)