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Evaluation of the activity of dhurrin and sorghum towards Meloidogyne incognita

Evaluation of the activity of dhurrin and sorghum towards Meloidogyne incognita The epidermal cells of leaf and roots of sorghum (Sorghum bicolor),sudangrass (S. sudanensis) and sorghum-sudangrass hybrids (S.bicolor × S. sudanensis) contain the cyanogenicglucoside dhurrin, which can degrade into hydrogen cyanide (HCN), well known for its toxicityto many organisms, including nematodes. In vitro bioassays were carried outwith the aim of evaluating the nematicidal and the nematistatic effects of dhurrinconcentrations on second-stage juveniles (J2) of Meloidogyne incognita, andthe effectiveness of dhurrin in decreasing or preventing hatching of M.incognita. Furthermore, Sorghum hybrid cv. Super Dolce 10, selectedfor its dhurrin content, and Eruca sativa sel. Nemat were used in twoglasshouse experiments to study the host-nematode relationship and the development ofM. incognita life cycle in the roots. In the in vitrobioassays, Sorghum hybrid cv. Super Dolce 10 showed an inhibitory effect onhatching, a slow nematicidal effect on J2 and no nematistatic activity. In the glasshouseexperiments, both Sorghum hybrid cv. Super Dolce 10 and E.sativa sel. Nemat proved to be a poor to non-host of M. incognita,with reproduction factor (R) always <1, compared with Solanumlycopersicum cv. UC82, an excellent host (R = 43). In both bioactive accessions twogenerations were completed in 15 weeks (four cycles in S. lycopersicum), butwith the production of very few egg masses, while root infestation was also always very low,with gall index (G.I.) < 1, compared with S. lycopersicum(G.I. = 4). In this study, the effectiveness of E. sativa sel. Nematin controlling M. incognita confirmed data from previous work. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematology Brill

Evaluation of the activity of dhurrin and sorghum towards Meloidogyne incognita

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References (43)

Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
Subject
Articles
ISSN
1388-5545
eISSN
1568-5411
DOI
10.1163/156854112X627291
Publisher site
See Article on Publisher Site

Abstract

The epidermal cells of leaf and roots of sorghum (Sorghum bicolor),sudangrass (S. sudanensis) and sorghum-sudangrass hybrids (S.bicolor × S. sudanensis) contain the cyanogenicglucoside dhurrin, which can degrade into hydrogen cyanide (HCN), well known for its toxicityto many organisms, including nematodes. In vitro bioassays were carried outwith the aim of evaluating the nematicidal and the nematistatic effects of dhurrinconcentrations on second-stage juveniles (J2) of Meloidogyne incognita, andthe effectiveness of dhurrin in decreasing or preventing hatching of M.incognita. Furthermore, Sorghum hybrid cv. Super Dolce 10, selectedfor its dhurrin content, and Eruca sativa sel. Nemat were used in twoglasshouse experiments to study the host-nematode relationship and the development ofM. incognita life cycle in the roots. In the in vitrobioassays, Sorghum hybrid cv. Super Dolce 10 showed an inhibitory effect onhatching, a slow nematicidal effect on J2 and no nematistatic activity. In the glasshouseexperiments, both Sorghum hybrid cv. Super Dolce 10 and E.sativa sel. Nemat proved to be a poor to non-host of M. incognita,with reproduction factor (R) always <1, compared with Solanumlycopersicum cv. UC82, an excellent host (R = 43). In both bioactive accessions twogenerations were completed in 15 weeks (four cycles in S. lycopersicum), butwith the production of very few egg masses, while root infestation was also always very low,with gall index (G.I.) < 1, compared with S. lycopersicum(G.I. = 4). In this study, the effectiveness of E. sativa sel. Nematin controlling M. incognita confirmed data from previous work.

Journal

Nematology – Brill

Published: Jul 7, 2012

Keywords: Eruca sativa ; erucin; hatching; reproduction factor; Sorghum bicolor ; southern root-knot nematode

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