Cold

Impact of Cold Stress Drs D. B. Fowler and A. E. Limin, Crop Development Centre University of Saskatchewan Saskatoon, Saskatchewan, S7N 5A8 Canada The Environmental and Physiological Nature of Stress Successful adaptation of a crop species is dependent upon the programming of critical growth stages so that the plant can capitalize on favorable weather periods […]
Oxidative

Impact of Oxidative Stress Dr. Bryan D. McKersie, University of Guelph (Posted on the Internet in 1996) ACTIVATION OF OXYGEN One of the paradoxes of life on this planet is that the molecule that sustains aerobic life, oxygen, is not only fundamentally essential for energy metabolism and respiration, but it has been implicated in many […]
Mineral deficiency

Impact of Mineral Deficiency Stress Drs Surya Kant and Uzi Kafkafi, Department of Field crops, Faculty of Agriculture , The Hebrew University PO Box 12 Rehovot, 76100, Israel A mineral element is considered as essential, when plants cannot complete reproductive stage of life cycle due to its deficiency. Deficiency must be corrected only by supplying the […]
Heat

Heat Stress and its Impact Dr. Anthony E. Hall, Botany and Plant Sciences Department University of California, Riverside The environmental and physiological nature of heat stress Heat stress often is defined as where temperatures are hot enough for sufficient time that they cause irreversible damage to plant function or development. In addition, high temperatures can increase the […]
Salinity

The Impact of Salinity Stress Dr. Rana Munns, CSIRO Division of Plant Industry Canberra ACT, Australia The Environmental and Physiological Nature of Salinity Introduction According to the FAO Land and Plant Nutrition Management Service, over 6% of the world’s land is affected by either salinity or sodicity (Table 1). The term salt-affected refers to soils that are […]
Drought

Drought Stress and its impact Dr. Abraham Blum Drought (and extreme temperature) is an environmental occurrence that can be defined and measured by indices derived from large historical databases on precipitation and other weather variables. Several drought indices are in use, as published by the Drought Mitigation Center at the University of Nebraska. Among these, the ‘Palmer Index’ […]