Relation between plant water status and Macrosiphum euphorbiae (Hemiptera: Aphididae) population dynamics on three cultivars of tomato

Title:

Relation between plant water status and Macrosiphum euphorbiae (Hemiptera: Aphididae) population dynamics on three cultivars of tomato

Creator:

Rivelli, Anna R., Tritta, Vincenzo, Toma, Irene, Fanti, Paolo, and Battaglia, Donatella

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:d6b508db-f18a-4f67-9d7d-da9cfde60a9b
uuid:d6b508db-f18a-4f67-9d7d-da9cfde60a9b

Subject:

Zoologie, zoologie, entomologie, Hemiptera, Aphididae, Macrosiphum euphorbiae, aphid population dynamics, Lycopersicon exculentum, water stress, trophic interaction, 2, and 59

Type:

article, články, model:article, and TEXT

Description:

1_Macrosiphum euphorbiae. Three tomato cultivars (Scintilla, Beefmaster and Rio Grande) were used in the experiments. The results for three watering regimes were compared with those of a control, which was well watered every three days: stressed plants received one third of the water supplied to the control over each three-day interval (experiment 1); stressed plants received a gradually decreasing amount of water (100% at the first watering and then 80%, 60%, 50%, 40% and 20%) every three days (experiment 2); stressed plants received the same amount of water as the control but at longer intervals, that is when evident signs of wilting appeared (experiment 3). The results showed that water stress either enhanced, had an adverse effect or had no effect on aphid population growth, depending on the cultivar and watering regime. No difference was recorded in the population dynamics of M. euphorbiae feeding on Beefmaster tomato plants subjected to different levels of water stress. In the case of the cultivar Scintilla, live aphids were less abundant on stressed plants than on well watered ones in experiment 1 and 3 but not in experiment 2., 2_The highest variability in aphid population dynamics on the plants grown under the different water stress protocols was recorded on the cultivar Rio Grande. In experiment 1, the initial peak in aphid numbers was higher on the water stressed plants than on the control and then decreased to lower numbers than on the control. In experiment 2, there were no differences in the numbers of aphids infesting stressed and control plants. In experiment 3, there were fewer aphids on stressed than on control plants after six days, as in experiment 1, but there was no initial peak in aphid numbers., Anna R. Rivelli ... [et al.]., and Obsahuje seznam literatury

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

European Journal of Entomology | 2013 Volume:110 | Number:4

Harvested from:

CDK

Metadata only:

false