Effect of Salinity on the Time Course of Wheat Seedling Growth

Abstract

The salt effect on germination is often thought of as a decrease in the percentage of seeds successfully germinated in a given time. It might be more illuminating, however, to consider the depression in percentage of germination as an extreme of the phenomenon of inhibition of seedling growth (4).Imbibition by a seed initiates a sequence of interdependent physiological events which becomes, in a favorable environment, the mechanism of germination, growth, and development. Valuable RESULTSColeoptiles of control plants elongated logarithmically from approximately 24 to 80 hr (Fig. 1)

Effects of nitrogen nutrition on salt-stressedNicotiana tabacumvar. Samsunin vitroplantlets

“…Reduced uptake of a nutrient will occur also as a result of a salt induced decrease in growth (Patel et al, 1975). Diminished root growth due to osmotic effects of salt leads to a decrease in the capacity of roots to obtain nutrients from the external medium (Fogle and Munns, 1973). Thus, a nutrient deficiency may result from both a reduction in uptake of essential nutrients and an osmotically produced decrease in root growth.…”

Differential Responses in Germination, Growth and Genes Expression of Cu/Zn- and Fe-superoxide Dismutase of Barley Under Salinity Stress

“…The reduced root length caused by salinity may be due to the damage of seeds observed in 'low-vigor seeds' , which is caused by the inhibition of cell division [4]. In addition, salinity can also reduce the water potential around the root system of a plant and thus decrease water and food availability to root cells [31]. High salinity can also lead to the cellular accumulation of ROS that can damage certain macromolecules within a plant [8,32].…”