physiological drought

physiological drought

a state in which plants are unable to absorb water even though water may be freely available. The condition can be caused by a high ionic concentration in the water, so OSMOSIS may not occur; by low water temperature; or by over-application of fertilizer.
References in periodicals archive ?
Moreover, it induces osmotic stress; the physiological drought, which typically reduces the growth and photosynthesis in plants (Munnes and Tester, 2008).
The pine trees from same study site were not attacked at all or less attacked was due to the severity of physiological drought.
Key words: Aphids, Adelgids, conifers, field capacity, holocyclic and anholocyclic, generation, physiological drought, permanent wilting point, sap flow, residual water.
The crown foliage of affected trees is unable to acquire the sufficient sap flow as a result the tree enters into lethal physiological drought (Deorksen and Mitchell, 1985).
The trees affected by scarcity of water unable to acquire sufficient sap flow, so the tree sometimes enters into a lethal physiological drought and declined spiral (Major, 1990).
That's why the tree with less physiological drought (0.
It was a definite effect of bearing physiological drought by pine trees.
On similar pattern a study was also conducted later by Salom (2009) on Pine Bark Adelgid in Virginia, America interpreted the relationship between the physiological drought and the feeding response of the aphids/adelgids in pine forest zones are nearly in accordance with present results in certain aspects particularly the survival of the adelgids at minus 10degC.
In the study of physiological drought tolerance in rapeseed, expressed under drought conditions, significant differences in grain weight has been reported [23].
Thus, if nitrogen treatment caused the cells to sense such physiological drought then reduction in adaxial stomatal number, and increase in abaxial stomatal number in senna is not surprising.
In the study of physiological drought tolerance in canola, expressed under drought conditions, significant differences in grain weight showed [15].

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