according to my studies there are a few wheat line which accumulate more K contents under 12 ds/m NaCl with respect to control. Is there any reference of such findings?
Regards
dear i am talking about endogenous K contents of plant without any exogenous treatments, only exposed to 12 ds/m NaCl
Very interesting question Wajid. the genotypes capapble of discriminating between potassium ions and sodium ions at the soil -root interface , will be much better accumulator of potassium . It is infact the discriminating ability of K/Na ratio under salinity stress , thereby , avoiding the accumulation of Na over K. Otherewise , there is invariably lower response of potassium application ,and K-application even under salinity stress, tamed the salt stress by the plant . Three PDfs are enclosed for further reading . Hope , you will like them
I am working on three crops viz; cotton, wheat and maize for assessing their salt tolerance potential in saline soils. I have noticed in all the three crops that few tolerant genotypes (not all) expressed high K content in leaf tissues at high salinity levels..even though they were able to maintain high K/Na ratio in their leaf tissues at elevated salinity levels.
One of my relevant paper has been published recently on similar aspect in Cereal Research Communications (link given below)...
http://www.akademiai.com/doi/pdf/10.1556/0806.43.2015.053
The answer is defenitely yes, especially in some medilum and high salt-tolerant crops, such as castor. .
In my experience with citrus, some tetraploid genotypes do not decrease leaf K concentration under moderate salt stress (4 dS/m) while others do. But I never registered an increase... Find attached a related publication in Arabidopsis.
In my view the answers by Dr. Anoop Kumar Srivastava are correct and I strongly support.
Dear colleagues nice answers, but do,t you think so there would be competition between Na and K for uptake with increasing salinity? or if these genotypes are k efficient then why they did,t accumulate high potassium under ideal conditions (non-saline). One thing which i can access, as we know K is also inorganic osmotica so these genotypes maintained high k level for osmotic adjustment.
Dear Indivar i can,t get access this paper kindly send me as attachment
It much depends on the stress exposure i.e how for how many days you are stressing the crop. initially (for 24 to 48 hr) it may rise but prolonged exposure reduces K concentration.
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