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Comparative Physiological and Agronomical Traits of Rice Varieties Differing in Salt Tolerance

Muhammad Abdus Sobahan1*and Nasima Akter2

1School of Agriculture and Rural Development, Bangladesh Open University, Gazipur, Bangladesh

2Division of Agronomy, Bangladesh Rice Research Institute, Gazipur, Bangladesh

Corresponding Author E-mail: sobahan_74@yahoo.com

DOI : http://dx.doi.org/10.12944/CARJ.13.1.25

Article Publishing History

Received: 14 Feb 2025
Accepted: 26 Mar 2025
Published Online: 21 Apr 2025

Review Details

Reviewed by: Dr. Anurag Bera
Second Review by: Dr. Rajesh Chakraborty
Final Approval by: Dr. Torit Baran Bagchi

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Abstract:

Salinity stress affects rice growth and yield by impairing physiological processes in coastal and irrigated areas. This study investigates on physiological and agronomical parameters in two rice varieties BRRI dhan97 (salt-tolerant) and BRRI dhan100 (salt-sensitive) differing in their salt tolerance to 80 mM NaCl solution. The results revealed that the dry weight of BRRI dhan 97 was not significantly altered by salt stress, whereas salt-sensitive BRRI dhan100 significantly decreased. Regarding photosynthetic pigments, salt-sensitive BRRI dhan100 degraded more Chl a (55.55%), Chl b (44.84%), Chl a+b (52.16%) and carotenoid (17.15%) than the BRRI dhan97 under salt stress. Salinity significantly reduced relative water content in BRRI dhan100 but did not affect in BRRI dhan97. The leaf proline concentration is higher in BRRI dhan100 (86.82µg g-1 FW) than BRRI dhan97 (82.01µg g-1 FW) in saline condition. The shoot Na+ concentration in BRRI dhan97 (760 ppm) was less than that of BRRI dhan100 (960 ppm), whereas Na+/K+ ratio was significantly higher in BRRI dhan100 than in BRRI dhan97. The findings of this research primarily highlight the physiological differences, including photosynthetic efficiency, osmotic activity, and ionic stress resistance between two cultivars. This comprehensive study might help farming communities in determining salt-resistant cultivars at salinity-affected areas.

Keywords:

Growth; Na+/K+ ratio; Photosynthetic pigments; Proline; Rice; Salt stress; Yield

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Copy the following to cite this article:

Sobahan M. A, Akter N. Comparative Physiological and Agronomical Traits of Rice Varieties Differing in Salt Tolerance. Curr Agri Res 2025; 13(1).. doi : http://dx.doi.org/10.12944/CARJ.13.1.25

Copy the following to cite this URL:

Sobahan M. A, Akter N. Comparative Physiological and Agronomical Traits of Rice Varieties Differing in Salt Tolerance. Curr Agri Res 2025; 13(1). Available from: https://bit.ly/3RrwZ0s

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