Although salinity stress mostly reduces germination rate and delays the onset of germination, its effects are modified by interactions with other environmental factors as temperature and light. Salinity can affect germination by affecting the osmotic component......
Salinity impairs seed germination, reduces nodule formation in legumes, retards plant development and reduces crop yield . The plants that grow in saline soils have diverse ionic compositions and a range in concentrations of dissolved salts . These concentrations fluctuate because of changes in water source, drainage, evapo-transpiration, and solute availability. Successful seedling establishment depends on the frequency and the amount of precipitation as well as on the ability of the seed species to germinate and grow while soil moisture and osmotic potentials decrease. These salts interfere with seed germination and crop establishment . Germination and seedling characteristics are the most viable criteria used for selecting salt tolerance in plants. Salinity stress can affect seed germination through osmotic effects.
dear,
there is lot of study on the effect of soil salinity on the germination rate. when salinity increase the rate increase
This is depend upon various parameters mainly soil ,germination, weather conditions and many more.
Increase in salinity causes increase in osmotic potential then decrease in germination rate, the decrease in germination rate under saline condition depends of type of plants for example germination rate of tolerate plants is less affect by salinity in comparing with sensitive plants to saliity.
Although salinity stress mostly reduces germination rate and delays the onset of germination, its effects are modified by interactions with other environmental factors as temperature and light. Salinity can affect germination by affecting the osmotic component......
Salinity impairs seed germination, reduces nodule formation in legumes, retards plant development and reduces crop yield . The plants that grow in saline soils have diverse ionic compositions and a range in concentrations of dissolved salts . These concentrations fluctuate because of changes in water source, drainage, evapo-transpiration, and solute availability. Successful seedling establishment depends on the frequency and the amount of precipitation as well as on the ability of the seed species to germinate and grow while soil moisture and osmotic potentials decrease. These salts interfere with seed germination and crop establishment . Germination and seedling characteristics are the most viable criteria used for selecting salt tolerance in plants. Salinity stress can affect seed germination through osmotic effects.
Different crops differ in their response to salinity. For example rice is more tolerant to salinity than many cereals. Hence the germination also is dependent on the tolerance level of crops. Within the crops the tolerance vary according to varieties. Usually the rice seed germination is affected when the soil electrical conductivity goes beyond 1.0
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