physiological and biochemical changes during ageing of Mung bean cuttings and its control by supplying sodium &potassium chlorides

	physiological and biochemical changes during ageing of Mung bean cuttings and its control by supplying sodium &potassium chlorides
journal of kerbala university
Article 1, Volume 11, Issue 4, 2015, Pages 22-30 PDF (0 K)
Abstract
controlling of ageing processes in terms of physiological and biochemical parameters, has been studied by employing NaCl and KCl in rooting response of aged Mung bean cuttings. Stem leafy cuttings were taken from -10 day-old light grown seedlings under standard conditions (continous illumination, light irradiance of 1600-1800 lux , temp. of 25±1 and relative humidity of 60-70 %. The results revealed the followings :- 1- The optimal Conc. of NaCl is 0.01M whereas, the better Conc. of KCl is 0.001M compared to cuttings aged in d/H2O (control). In addition ,the higher Conc. (0.1M) was considered as inhibitor of rooting response (completely) in aged cuttings for both NaCl & KCl. 2- Interaction between Na+ & K+ was characterised by its antagonistic role whether supplied simultanously or subsequently in terms of Physiological & biochemical Parameters that included the followiongs:- a-Significant decline in protein content for all treatments except for cuttings were aged in KCl ,that statistically maintaining its level as it was the case in control. b-Significant increase in free ABA level with KCl &NaCl whether supplied individually, or in combination.

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