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Plasticity of yield components of winter wheat in response to cereal aphids

Lookup NU author(s): Dr Catherine Tétard-Jones, Professor Carlo Leifert

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Abstract

Phenotypic plasticity in plants is a naturally occurring phenomenon that plants have evolved to survive environmental change. In agriculture, environmental stress such as insect infestation can lead to reduction in yield components. Although insect resistance can be bred into crops, insect genetic variation can cause variability in resistance leading to yield reduction. However, the extent to which insect resistance is plastic may depend on crop genotype. A genotype × genotype matrix was designed to study the effect of within-species genetic variation on wheat × aphid interactions. We found that wheat yield components and aphid population growth were significantly influenced by both wheat genotype and aphid genotype. Furthermore, plasticity in wheat yield components depended on the wheat–aphid combination. The results indicate that wheat plasticity not only has a genetic basis, but that it is also influenced by the biotic environment. The consequences of plasticity in resistance to aphid genotypes found in our study in relation to crop breeding for insect resistance are discussed.

Publication metadata

Author(s): Tetard-Jones C, Leifert C

Publication type: Article

Publication status: Published

Journal: NJAS: Wageningen Journal of Life Sciences

Year: 2011

Volume: 58

Issue: 3-4

Pages: 139-143

Print publication date: 10/12/2011

ISSN (print): 1573-5214

ISSN (electronic): 2212-1307

Publisher: Elsevier BV

URL: http://dx.doi.org/10.1016/j.njas.2011.01.003

DOI: 10.1016/j.njas.2011.01.003

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