Quantitative population-epigenetics in screening and development of regulator-active compounds
DOI:
https://doi.org/10.5073/jka.2012.434.074Abstract
Quantitative (Population-) Epigenetics describes the variability observed in characters due to factors in the environment induced primarily by the gamut of chemical compounds screened for regulatory efficacy. Likewise, index selection based on the statistical Quantitative (Population-) Epigenetics theory can be used to improve efficiency in screening compounds for their potential to enhance quantitative characters such as yield, stability and resistance to unfavourable environmental influences (e.g., water stress, cold temperatures or disease resistance).- Optimal screening efficiency of regulator-active compounds is obtained with
- high environmental variability,
- low heritability (characters for which the genotype sets a wide ‘norm of reaction’ on environmental influences),
- high correlation between characters under indirect selection and intensity of selection is shown.
Quantitative Populations-Epigenetik beim Screening und der Entwicklung von regulatorisch aktiven Substanzen
Quantitative (Populations-) Epigenetik beschreibt die durch regulatorische Substanzen als Umweltfaktoren bewirkte Variabilität von Merkmalen. Die Anwendung von Indexselektion auf Grundlage der statistischen Quantitativen (Populations-) Epigenetik-Theorie zur Erhöhung der Screeningeffizienz von chemischen Substanzen bei quantitativen landwirtschaftlichen Merkmalen wie zum Beispiel Ertrag, Standfestigkeit oder Erhöhung der Widerstandsfähigkeit gegen negative Umweltfaktoren (z. B. Wassermangel, Frost oder Krankheiten), wird dargestellt.
- Optimale Screeningeffizienz bei regulatorisch wirksamen Substanzen wird erzielt
- bei großer Umweltvariabilität,
- bei niedriger Heritabilität (Merkmale, bei denen der Genotyp eine große Reaktionsbreite (‘norm of reaction’) für die Modifikation durch die Umwelt zulässt),
- bei hoher Korrelation zwischen Hilfsmerkmal und Zielmerkmal bei indirekter Selektion und mit hoher Selektionsintensität.
Downloads
Published
2012-03-13
Issue
Section
Neue Herbizide / New Herbicide Products
License
This work is licensed under a Creative Commons Attributed 4.0 International License.
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material for any purpose, even commercially
Under the following terms:
-
Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits