Journal of Environmental Biology

Effect of salt stress on morpho-physiology,

vegetative growth and yield of rice

M.A. Hakim^{1, 2}*, Abdul Shukor Juraimi³, M.M. Hanafi¹, E. Ali⁴, Mohd. Razi Ismail⁵, Ahmed Selamat³ and S.M. Rezaul Karim⁶

¹Department of Land Management, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

²Department of Agricultural Chemistry, Hajee Mohammad Danesh and Technology University, Dinajpur 5200, Bangladesh

³Department of Crop Science, Faculty of Agriculture, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

⁴Nanotechnology and Catalysis Research Center, University of Malaya, 50603 Kuala Lumpur, Malaysia

⁵Institute of Tropical Agriculture, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

?⁶Faculty of Agro Based Industry, University Malaysia Kelantan, Campus Jeli, 17600 Jeli, Kelantan, Malaysia

*Corresponding Author E-mail: ahakimupm@gmail.com

 Publication Data

Paper received:

18 January 2013

Revised received:

14 June 2013

Accepted:

16 August 2013

Abstract

Selection of salt tolerant rice varieties has a huge impact on global food supply chain. Five Malaysian rice (Oryza sativa L.) varieties, MR33, MR52, MR211, MR219 and MR232 were tested in pot experiment under different salinity levels for their response in term of vegetative growth, physiological activities, development of yield components and grain yield. Rice varieties, BRRI dhan29 and IR20 were used as a salt-sensitive control and Pokkali was used as a salt-tolerant control. Three different salinity levels viz. 4, 8, and 12 dS m^-1 were used in a randomized complete block design with four replications under glass house conditions. Two Malaysia varieties, MR211 and MR232 performed better in terms of vegetative growth (plant height, leaf area plant-1, number of tillers plant^-1, dry matter accumulation plant^-1), photosynthetic rate, transpiration rate, yield components, grain yield and injury symptoms. While, MR33, MR52 and MR219 verities were able to withstand salinity stress over salt-sensitive control, BRRI dhan29 and IR20.

 Key words

Growth, Photosynthesis, Rice, Salinity, Transpiration, Yield 

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