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Plant development, yielding properties and kernel composition of winter wheat in relation to soil type and irrigation treatment under an organically elevated temperature

Tom Hellemans (UGent) , Kevin Dewitte (UGent) , Filip Van Bockstaele (UGent) , Pieter Vermeir (UGent) , Geert Haesaert (UGent) and Mia Eeckhout (UGent)
(2019)
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Abstract
In Europe, climate change is predicted to induce an increased occurrence of dry spells and longer and more intense heat waves resulting in drought and temperature stress. Such severe abiotic stresses may lead not only to a drastic yield decrease but will also impact kernel development and thus, its composition. More specific, protein and starch composition are expected to be altered by drought and temperature stress during the generative growth stages of the wheat. A multifactorial greenhouse trial on three winter wheat genotypes (waxy and non-waxy) comprising two irrigation conditions (full versus limited irrigation) was conducted in order to investigate effects of drought under organically elevated temperatures on plant development, yielding properties and kernel composition. In addition, the effect of soil type, on which empirical research is lacking, was included by using coarse sand and heavy clay. Both environmental (soil type and irrigation condition) and genotypic effects were observed for plant height, an average number of tillers and the leaf chlorophyll value. Despite an increased NUE was noticed for all genotypes grown in sandy soil with limited irrigation, a significant GxE interaction effect was observed for grain protein content and composition. The latter, which was studied using a novel HPLC-based technique, was solely affected by the soil type. A decreased gliadin/glutelin-ratio and variations in the HMW and LMW-glutenin fractions were found. Despite the relative higher starch concentration for all samples from fully irrigated plots, amylose/amylopectin-ratio and α-amylase activity did not differ significantly within single genotypes. Also, only minor variations in the amylopectin fine-structure between the treatments were noticed. Mainly protein composition and yield were affected by drought and temperature stress which indicates the possible detrimental effects of climate change. Soil type, however, can partially compensate for these variations depending on the water holding capacity and mineral composition of the soil.

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Citation

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Chicago
Hellemans, Tom, Kevin Dewitte, Filip Van Bockstaele, Pieter Vermeir, Geert Haesaert, and Mia Eeckhout. 2019. “Plant Development, Yielding Properties and Kernel Composition of Winter Wheat in Relation to Soil Type and Irrigation Treatment Under an Organically Elevated Temperature.” In Ghent, Belgium.
APA
Hellemans, T., Dewitte, K., Van Bockstaele, F., Vermeir, P., Haesaert, G., & Eeckhout, M. (2019). Plant development, yielding properties and kernel composition of winter wheat in relation to soil type and irrigation treatment under an organically elevated temperature. Presented at the 3rd Agriculture and climate change conference, Ghent, Belgium.
Vancouver
1.
Hellemans T, Dewitte K, Van Bockstaele F, Vermeir P, Haesaert G, Eeckhout M. Plant development, yielding properties and kernel composition of winter wheat in relation to soil type and irrigation treatment under an organically elevated temperature. Ghent, Belgium; 2019.
MLA
Hellemans, Tom et al. “Plant Development, Yielding Properties and Kernel Composition of Winter Wheat in Relation to Soil Type and Irrigation Treatment Under an Organically Elevated Temperature.” Ghent, Belgium, 2019. Print.
@inproceedings{8618747,
  abstract     = {In Europe, climate change is predicted to induce an increased occurrence of dry spells and longer and more intense heat waves resulting in drought and temperature stress. Such severe abiotic stresses may lead not only to a drastic yield decrease but will also impact kernel development and thus, its composition. More specific, protein and starch composition are expected to be altered by drought and temperature stress during the generative growth stages of the wheat. A multifactorial greenhouse trial on three winter wheat genotypes (waxy and non-waxy) comprising two irrigation conditions (full versus limited irrigation) was conducted in order to investigate effects of drought under organically elevated temperatures on plant development, yielding properties and kernel composition. In addition, the effect of soil type, on which empirical research is lacking, was included by using coarse sand and heavy clay.

Both environmental (soil type and irrigation condition) and genotypic effects were observed for plant height, an average number of tillers and the leaf chlorophyll value. Despite an increased NUE was noticed for all genotypes grown in sandy soil with limited irrigation, a significant GxE interaction effect was observed for grain protein content and composition. The latter, which was studied using a novel HPLC-based technique, was solely affected by the soil type. A decreased gliadin/glutelin-ratio and variations in the HMW and LMW-glutenin fractions were found. Despite the relative higher starch concentration for all samples from fully irrigated plots, amylose/amylopectin-ratio and α-amylase activity did not differ significantly within single genotypes. Also, only minor variations in the amylopectin fine-structure between the treatments were noticed.

Mainly protein composition and yield were affected by drought and temperature stress which indicates the possible detrimental effects of climate change. Soil type, however, can partially compensate for these variations depending on the water holding capacity and mineral composition of the soil.},
  author       = {Hellemans, Tom and Dewitte, Kevin and Van Bockstaele, Filip and Vermeir, Pieter and Haesaert, Geert and Eeckhout, Mia},
  language     = {eng},
  location     = {Budapest, Hungary},
  title        = {Plant development, yielding properties and kernel composition of winter wheat in relation to soil type and irrigation treatment under an organically elevated temperature},
  year         = {2019},
}