Root developmental response of selected rice varieties under progressive drought conditions
2018
Gaetos, G.C.S. | Divina, C.C. | Kalaw, S.P. | Reyes, R.G. | Mananghaya, T.E. | Niones, J.M. | Suralta, R.R.
Drought stress can affect the plant physiology status, metabolic activities and other related processes concerning growth and development. This study aims to characterize the root cell structure and root developmental response in relation to dry matter production under progressive drought (PDR) stress using the a root box system. NSIC Rc416, PSB Rc68 and IR64 rice varieties were subjected to PDR and non-stress conditions. The experiment was laid out in RCBD with three replications. The effect of water stress in the physiological and cellular structure of rice showed that significant changes in morphological, physiological and cellular development in response to PDR in relation to non-stress condition. It is notable that a significant reduction of shoot biomass (SDW) compared with the non-stress conditions. This significant SDW reduction was attributed to less root development and reduced cellular structure, which led to dry matter reduction.
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