Author(s):

Deepak Kumar Yadav, Bandana Rani Barik, Gourisankar Pradhan, Rajesh Kumar Singh and Saroj Kumar Prasad

Abstract: The drought prone area are seen frequently worldwide and increasing 14.30% during the period of 1902– 1949 and 1950–2008 Wang et al. (2014) while Zhang et al., (2017b) also reported that the semi-arid region of Northern China are also facing drought frequently as the variability of annual and decadal precipitation and temperature. Harb et al. (2010) documented that due to the drought induced to plant resulting as changes at cellular level showing acclamatory responses through proliferation of cell wall in Arabidopsis thaliana as an early cop-out strategy under water scarcity. Drought induced plant having decrease in their specific leaf area resulting as reduction of cell expansion and finally thinner leaves (Liu and Stützel, 2004). A common finding reported from drought studies area as the enhancement of root-shoot ratio and finding the enhancement of more root biomass compare to shoot biomass under the water limited condition (Blum, 1996). Such finding are also reported by Erice et al. (2010) under water stress conditions as maintaining higher root-shoot ratio in alfalfa. The reason behind it as accumulation of solutes on the root tip in water limited condition and resulting as variation in potential between the surrounding soil and root hairs, which in turn attract more water to these root hairs/ root tips therefore able to maintain root turger pressure and growth (Liu and Stützel, 2004). Moreover reduction in the leaf area of Jatropha curcas L. seedling as 28% of total leaf biomass produced under water scarcity (Achten et al., 2010).

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