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Effects of benzyl isothiocyanate on the reproduction of Meloidogyne incognita on Glycine max and Capsicum annuum

Effects of benzyl isothiocyanate on the reproduction of Meloidogyne incognita on Glycine max and... AbstractReproduction of Meloidogyne incognita on either Capsicum annuum or Glycinemax was suppressed when infective second-stage juveniles (J2) were exposedto 0.03 mM benzyl isothiocyanate (BITC) for 2 h prior to inoculation of thehost. Infectivity as rated by a gall index was significantly reduced on bothG. max and C. annuum. In C. annuum, nematode egg masses were recovered from48% of the plants inoculated with BITC-treated J2 compared with 98% for thecontrols, and egg mass scores were reduced. Egg mass production was reducedin C. annuum by 69% and mean total eggs/plant was reduced by 97% in G. max.When plants were inoculated with treated J2, two measures of plant health,root weight and shoot weight, were reduced in C. annuum but not in G. max.However, root and shoot weights were not correlated with egg production foreither host plant, irrespective of treatment. There were strong interactionsbetween egg production, as measured by mean total eggs/plant (G. max) ormean total eggs/egg mass (C. annuum), and hatching of J2 from eggs obtainedfrom all combinations of plant host and J2 treatment. Hatch of J2 from eggsobtained from G. max was significantly lower when plants had been inoculatedwith BITC-treated J2 than when plants had been inoculated with control J2.Such effects were not observed with C. annuum. BITC may have importantresidual consequences on the progeny of M. incognita not directly exposed tothe chemical. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematology Brill

Effects of benzyl isothiocyanate on the reproduction of Meloidogyne incognita on Glycine max and Capsicum annuum

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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
1388-5545
eISSN
1568-5411
DOI
10.1163/138855409X12595802046375
Publisher site
See Article on Publisher Site

Abstract

AbstractReproduction of Meloidogyne incognita on either Capsicum annuum or Glycinemax was suppressed when infective second-stage juveniles (J2) were exposedto 0.03 mM benzyl isothiocyanate (BITC) for 2 h prior to inoculation of thehost. Infectivity as rated by a gall index was significantly reduced on bothG. max and C. annuum. In C. annuum, nematode egg masses were recovered from48% of the plants inoculated with BITC-treated J2 compared with 98% for thecontrols, and egg mass scores were reduced. Egg mass production was reducedin C. annuum by 69% and mean total eggs/plant was reduced by 97% in G. max.When plants were inoculated with treated J2, two measures of plant health,root weight and shoot weight, were reduced in C. annuum but not in G. max.However, root and shoot weights were not correlated with egg production foreither host plant, irrespective of treatment. There were strong interactionsbetween egg production, as measured by mean total eggs/plant (G. max) ormean total eggs/egg mass (C. annuum), and hatching of J2 from eggs obtainedfrom all combinations of plant host and J2 treatment. Hatch of J2 from eggsobtained from G. max was significantly lower when plants had been inoculatedwith BITC-treated J2 than when plants had been inoculated with control J2.Such effects were not observed with C. annuum. BITC may have importantresidual consequences on the progeny of M. incognita not directly exposed tothe chemical.

Journal

Nematology – Brill

Published: Jan 1, 2010

Keywords: SOYBEAN; INFECTIVITY; EGG PRODUCTION; NEMATODE; PLANT HEALTH; HATCHING; PEPPER

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