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Breeding for inducible resistance against insects – applied plant breeding aspects

Åhman, Inger (2009). Breeding for inducible resistance against insects – applied plant breeding aspects. IOBC-WPRS bulletin. 44, 121-130
[Journal article]

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Abstract

Many of the pre-requisites necessary for breeding plants with inducible resistance to pests are no different from breeding for constitutive resistance. In both cases it is necessary to have resistance genes giving high enough yield gains from pest protection, efficient selection methods and means of introducing resistance genes into agronomically acceptable plant material. In addition, resistance traits need to be neutral or positive to non-target organisms. In inducible resistance, there is also the need for proper timing and specificity of induction. Tentatively the ideal inducible resistance is triggered by specific cues which rapidly induce specific resistance traits with long duration relative to the sensitive period of the crop and which give a systemic plant response. It takes knowledge to develop appropriate selection methods for resistance and in the case of inducible resistance we also need knowledge about how the inducing factors are operating. Inducing cues may come from insect activities on the plant (e.g. feeding, oviposition), from neighbouring plants or from manmade chemical formulations of elicitors. Plant selections can be based on plant damage levels, insect numbers, insect responses, plant resistance traits and/or molecular characteristics of the plant genome. Breeding for insect-inducible resistance to insects has been applied in the form of rapidly induced highly specific resistance in insect - crop combinations where there are gene-for-gene relationships, such as with the Hessian fly and the Russian wheat aphid in wheat. To my knowledge there are no examples of traditional breeding where less specific types of resistance; induced by insects, by neighbouring plants or by chemical formulations; have been deliberately bred into commercial cultivars. It is likely that the accumulating knowledge about the mechanisms of induced resistance will find applications in cultivars produced by genetic engineering.

Authors/Creators:Åhman, Inger
Title:Breeding for inducible resistance against insects – applied plant breeding aspects
Series/Journal:IOBC-WPRS bulletin (1027-3115)
Year of publishing :2009
Volume:44
Page range:121-130
Publisher:IOBC/WPRS Working Group “Induced Resistance in Plants Against Insects and Diseases”
ISSN:1027-3115
Language:English
Additional Information:Publicerad i IOBC/WPRS Bulletin. ISBN 978-92-9067-218-0. ISSN 1027-3115.
Publication Type:Journal article
Refereed:No
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Plant breeding
Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Agronomy
Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Plant and forest protection
Keywords:induced plant resistance, pests, herbivores, mechanisms, selection
URN:NBN:urn:nbn:se:slu:epsilon-4-156
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-4-156
ID Code:4374
Department:(LTJ, LTV) > Agrosystems (until 121231)
Deposited By: Jenny Casey Eriksson
Deposited On:14 Dec 2009 00:00
Metadata Last Modified:02 Dec 2014 10:30

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