NDLI: Gamma irradiation on canola seeds affects herbivore-plant and host-parasitoid interactions

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Gamma irradiation on canola seeds affects herbivore-plant and host-parasitoid interactions

Content Provider	Springer Nature Link
Copyright Year	2016
Abstract	As an agricultural modernization, gamma irradiation is an important method for enhancing crop yield and quality. Nevertheless, its use can alter other plant traits such as nutrition and resistance to different biotic/abiotic stresses that consequently affect plant–insect interactions. A tritrophic system was utilized based on two canola mutant lines produced through gamma irradiation (RGS 8–1 and Talaye 8–3). Plutella xylostella (L.), as a worldwide pest of Brassicaceae and Cotesia vestalis (Holiday) as a key biocontrol agent of P. xylostella were examined for the potential indirect effects of canola seed irradiation on the experimental insects’ performance when acting on the respective mutant lines. This study showed that physical mutation did not affect plant nitrogen and herbivore-damaged total phenolics; however, phenolic compounds showed greater concentration in damaged leaves than undamaged leaves of both mutant and control plants. The relative growth rate and pupal weight of P. xylostella reared on RGS 8–1 were significantly higher than those reared on the control RGS. There was no significant difference by performance parameters of the parasitoid, C. vestalis, including total pre-oviposition period, adult longevity, adult fresh body weight of males and females, pupal weight, forewing area, and total longevity of both sexes on tested canola cultivars in comparison with their mutant lines. Life table parameters of C. vestalis on mutant lines of both cultivars, RGS and Talaye, were not significantly different from their control treatments. Comprehensive studies should be conducted to find out the mechanisms under which gamma rays affect plant–insect interactions.
Starting Page	256
Ending Page	263
Page Count	8
File Format	PDF
ISSN	1519566X
Journal	Neotropical Entomology
Volume Number	46
Issue Number	3
e-ISSN	16788052
Language	English
Publisher	Springer US
Publisher Date	2016-11-12
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Insect fitness Life Sciences Host plant resistance Tritrophic interactions Entomology Physical mutation Total phenolics Agriculture Diamondback moth
Content Type	Text
Resource Type	Article
Subject	Insect Science

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Gamma irradiation on canola seeds affects herbivore-plant and host-parasitoid interactions