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Foliar Application of Potassium to Mitigate the Adverse Impact of Water Stress on Growth and Physiological Performance of Stevia rebaudiana  rebaudiana


Shilpi Srivastava*, Malvika Srivastava  


Department of Botany, DDU Gorakhpur University, Gorakhpur, India     


Shilpi Srivastava and Malvika Srivastava are conferred with Jan Ingenhousz Research Award-2015 in Plant Physiology by IASR


Abbreviations: LAI: Leaf Area Index, RWC: Relative Water Content, ROS: Reactive Oxygen Species, KNO3: Potassium nitrate  


Keywords:  Stevia rebaudiana , biochemicals, potassium, water stress


Photon Ignitor: ISJN42395749D762124032015


Citation: Srivastava S., Srivastava M., 2015. Foliar Application of Potassium to Mitigate the Adverse Impact of Water Stress on Growth and Physiological Performance of Stevia rebaudiana rebaudiana. The Journal of Plant Physiology. Photon 116, 228-234.


Abstract 

An experiment was carried out to study the effect of foliar application of potassium on growth and water stress. The results reveal that all the growth biochemical constituents of Stevia rebaudiana plants under parameters (plant height, leaf area index, biomass, relative water content) were drastically reduced and the biochemicals viz. total amino acid, protein and nitrogen content were also affected in response to water deficit. However foliar application of K had a positive effect on growth of Stevia rebaudiana plants and also maintained optimum biochemicals. Results prove that foliar application of KNO3 under water deficit conditions can be effective in promoting the growth performance with enhanced biochemicals. This research concludes to increase the tolerance capacity of Stevia rebaudiana and may prove beneficial for commercial cultivation and management of Stevia rebaudiana  in water scarce regions hence promoting its quality and quantity characteristics.






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