Studying physiological‐morphological chanages of Agropyron cristatum against water deficiency
Water is the principal constituent of plant cells, usually composing over 80％ of the fresh weight of herbaceous plants.Water is the primary solvent in physiological processes by which gases, minerals, and other materials enter plant cells and by which these materials are translocated to various parts of the plant.Water is the substance in which processes such as photosynthesis and other biochemical reactions occur and a structural component of proteins and nucleic acids.Water is also essential for the maintenance of the rigidity of plant tissue and for cell enlargement and growth in plants (Brown 1995).During periods when rainfall is lower than evapotranspiration demand, a water deficiency exists.Under water deficiency conditions, the rate of water loss from transpiration exceeds the rate of water absorption by the roots, and plants undergo water stress.Water stress can vary from a small decrease in water potential to the lethal limit of dessication.Range plants have mechanisms that help reduce damage from water stress.This research focuses on mechanisms ( changes) of A gropyron cristatum when facing water stress.
Fakhireh Tavili
Assistant Professor,Range Management Department,College of Natural Resources,University of Zabol Assistant Professor,Range Management Department,College of Natural Resources,University of Tehran,Ka
国际会议
呼和浩特
英文
2008-06-29（万方平台首次上网日期，不代表论文的发表时间）