Differential Response of Sugar Beet to Long-Term Mild to Severe Salinity in a Soil–Pot Culture

Md. Tahjib-UI-Arif, Abdullah Al Mamun Sohag, Sonya Afrin, Kazi Khayrul Bashar, Tania Afrin, A.G.M. Sofi Uddin Mahamud, Mohammed Arif Sadik Polash, Md. Tahmeed Hossain, Md. Abu Taher Sohel, Marian Brestic and Yoshiyuki Murata
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Md. Tahjib-UI-Arif: Department of Biochemistry and Molecular Biology, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
Abdullah Al Mamun Sohag: Department of Biochemistry and Molecular Biology, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
Sonya Afrin: Graduate School of Environmental and Life Science, Okayama University, Kita-ku, Okayama 700-8530, Japan
Kazi Khayrul Bashar: Bangladesh Jute Research Institute, Manik Mia Avenue, Dhaka-1207, Bangladesh
Tania Afrin: Graduate Training Institute, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
A.G.M. Sofi Uddin Mahamud: Food Biochemistry Laboratory, Department of Biochemistry and Molecular Biology, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
Mohammed Arif Sadik Polash: Department of Crop Botany, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
Md. Tahmeed Hossain: Department of Biochemistry and Molecular Biology, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
Md. Abu Taher Sohel: Agronomy and Farming System Division, Bangladesh Sugar Crop Research Institute, Pabna 6620, Bangladesh
Marian Brestic: Department of Plant Physiology, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture, 94976 Nitra, Slovakia
Yoshiyuki Murata: Graduate School of Environmental and Life Science, Okayama University, Kita-ku, Okayama 700-8530, Japan

Agriculture, 2019, vol. 9, issue 10, 1-19

Abstract: Attempts to cultivate sugar beet ( Beta vulgaris spp. vulgaris ) in the sub-tropical saline soils are ongoing because of its excellent tolerance to salinity. However, the intrinsic adaptive physiology has not been discovered yet in the sub-tropical climatic conditions. In this study, we investigated morpho-physiological attributes, biochemical responses, and yield of sugar beet under a gradient of salinity in the soil–pot culture system to evaluate its adaptive mechanisms. Results exhibited that low and high salinity displayed a differential impact on growth, photosynthesis, and yield. Low to moderate salt stress (75 and 100 mM NaCl) showed no inhibition on growth and photosynthetic attributes. Accordingly, low salinity displayed simulative effect on chlorophyll and antioxidant enzymes activity which contributed to maintaining a balanced H 2 O 2 accumulation and lipid peroxidation. Furthermore, relative water and proline content showed no alteration in low salinity. These factors contributed to improving the yield (tuber weight). On the contrary, 250 mM salinity showed a mostly inhibitory role on growth, photosynthesis, and yield. Collectively, our findings provide insights into the mild–moderate salt adaptation strategy in the soil culture test attributed to increased water content, elevation of photosynthetic pigment, better photosynthesis, and better management of oxidative stress. Therefore, cultivation of sugar beet in moderately saline-affected soils will ensure efficient utilization of lands.

Keywords: antioxidant enzymes; photosynthesis; reactive oxygen species; salinity; sugar beet; yield (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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