EJPAU 2006. Piesik D. , Weaver D. , Peck G. , Morrill W. DIEL PATTERNS IN VOLATILES RELEASED BY MECHANICALLY-DAMAGED WHEAT PLANTS

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2006
Volume 9
Issue 4/volume9

Topic:

Agronomy

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Piesik D. , Weaver D. , Peck G. , Morrill W. 2006. DIEL PATTERNS IN VOLATILES RELEASED BY MECHANICALLY-DAMAGED WHEAT PLANTS, EJPAU 9(4/volume9), #07.
Available Online: http://www.ejpau.media.pl/volume9/issue4/volume9/abs-07.html

DIEL PATTERNS IN VOLATILES RELEASED BY MECHANICALLY-DAMAGED WHEAT PLANTS

Dariusz Piesik¹, David K. Weaver², Gavin E. Peck², Wendell L. Morrill²
¹ Department of Applied Entomology, University of Technology and Agriculture, Bydgoszcz, Poland
² Department of Land Resources and Environmental Sciences of Montana State University, USA

ABSTRACT

Plants emit volatile chemicals, which may attract insect herbivores and associated predators or parasitoids. Insect feeding or mechanical injury may influence the release of these chemicals. Five types of plant wounding were imposed after the Zadoks 32 growth stage was reached and volatiles were collected from the main stem. The volatile collection sequence used was two consecutive ten-hour collections to obtain the samples in either daylight or darkness. The first sampling period was immediately after the injury, followed by sampling at 2 and 4 days. The volatiles collected were analyzed by coupled gas chromatography-mass spectrometry (GC-MS). Damage to wheat stems or leaves increased the production of the secondary metabolites, linalool (C₁₀H₁₈O) and linalool oxide (C₁₀H₁₈O₂). The amount released was greater during the day, and was also influenced by the type of the injury. In some cases, enhanced volatile chemical production continued for 4 days following the injury.

Key words: wheat, Triticum aestivum, volatiles, semiochemicals, odors.

Dariusz Piesik
Department of Applied Entomology,
University of Technology and Agriculture, Bydgoszcz, Poland
20 Kordeckiego St., 85-225 Bydgoszcz, Poland
email: dpiesik@interia.pl

David K. Weaver
Department of Land Resources and Environmental Sciences of Montana State University, USA
334 Leon Johnson Hall, Bozeman, MT 59717-3120, USA

Gavin E. Peck
Department of Land Resources and Environmental Sciences of Montana State University, USA
334 Leon Johnson Hall, Bozeman, MT 59717-3120, USA

Wendell L. Morrill
Department of Land Resources and Environmental Sciences of Montana State University, USA
334 Leon Johnson Hall, Bozeman, MT 59717-3120, USA

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.