Root developmental response of selected rice varieties under progressive drought conditions

Issue Date

7-2018

Abstract

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.

Source or Periodical Title

Philippine Journal of Crop Science

ISSN

0115-463X

Volume

43

Issue

Supplement no. 1

Page

71

Document Type

Article

Language

English

Subject

Oryza sativa L.; Rice varieties; Drought-tolerant plants

En – AGROVOC descriptors

ORYZA SATIVA; VARIETIES; ROOTS; PLANT PHYSIOLOGY; DROUGHT STRESS; WATER DEPRIVATION

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