Publication Date
1985
Location
Kyoto Japan
Description
The difficulty of selection for resistance to environmental stress is increased by year-to-year climatic variation. Management practices, e.g., fertilization and mowing can increase winter or drought injury. Improved discrimination among genotypes for resistance to stress can result. In northwestern Oklahoma winter survival of Eragrostis curvula (Schrad.) Nees tillers was decreased by autumn defoliation. The mowing date causing maximum injury varied from year-to-year but was usually in October. Multiple autumn defoliations were sometimes necessary to decrease survival to desired levels in relatively winter-hardy germplasm. More research is needed on the use of management to increase stress and discrimination among genotypes for winter survival and drought resistance.
Citation
Voigt, P W. and Dewald, C L., "Modifying Environmental Stress to Increase Discrimination Among Genotypes" (1985). IGC Proceedings (1985-2023). 41.
(URL: https://uknowledge.uky.edu/igc/1985/ses2/41)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Modifying Environmental Stress to Increase Discrimination Among Genotypes
Kyoto Japan
The difficulty of selection for resistance to environmental stress is increased by year-to-year climatic variation. Management practices, e.g., fertilization and mowing can increase winter or drought injury. Improved discrimination among genotypes for resistance to stress can result. In northwestern Oklahoma winter survival of Eragrostis curvula (Schrad.) Nees tillers was decreased by autumn defoliation. The mowing date causing maximum injury varied from year-to-year but was usually in October. Multiple autumn defoliations were sometimes necessary to decrease survival to desired levels in relatively winter-hardy germplasm. More research is needed on the use of management to increase stress and discrimination among genotypes for winter survival and drought resistance.
