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Hatching dynamics of the beet cyst nematode, Heterodera schachtii, following exposure to root leachates from cultivars of sugar beet, white mustard and radish

Wright, A.J.D., Sparkes, D.L., Stevens, M. and Back, M.A. (2019) Hatching dynamics of the beet cyst nematode, Heterodera schachtii, following exposure to root leachates from cultivars of sugar beet, white mustard and radish. Nematology.

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Official URL: https://doi.org/10.1163/15685411-00003256

Abstract

The hatching and emergence of juveniles from cysts of Heterodera schachtii in response to various stimuli are well understood. These responses relate to means of optimising the chances of successful reproduction and survival of populations. However, the effect of different cultivars of host species is not so well understood. To gain a further understanding of any differences between cultivars of host species, we conducted a number of experiments using root leachates obtained from a range of cultivars of sugar beet (Beta vulgaris), radish (Raphanus sativus) and white mustard (Sinapis alba). Heterodera schachtii cysts were exposed to root leachate solutions in in vitro laboratory assays during which emergence of second-stage juveniles (J2) from cysts was monitored weekly. Significant differences in the stimulation of hatch of J2 were found in response to different sugar beet cultivars and these differences may be driven by differing growth habits of such varieties. However, results obtained from experiments using brassica varieties showed contrasting responses. In one experiment, root leachates appeared to inhibit hatch of J2. However, two experiments did show a stimulation of hatch of J2 and also significant differences in hatch responses due to the age of the plant. These findings may help develop future screening procedures for brassica trap crops and help identify those that show the greatest potential for H. schachtii control.

Item Type: Article
Keywords: Beta vulgaris, hatch stimulation, integrated pest management, Raphanus sativus, Sinapis alba
Divisions: Crop and Environment Sciences
Depositing User: Ms Kath Osborn
Date Deposited: 30 May 2019 18:28
Last Modified: 30 May 2019 18:28
URI: http://hau.collections.crest.ac.uk/id/eprint/17407

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