ACTA AGRICULTURAE BOREALI-SINICA ›› 2019, Vol. 34 ›› Issue (5): 163-169. doi: 10.7668/hbnxb.20190029

• Tillage and Cultivation·Physiology and Biochemistry • Previous Articles     Next Articles

Effects of NaCl Stress on Growth and Physiological Characteristics of Sugar Beet at Different Seedling Stages

HUANG Chunyan, SU Wenbin, FAN Fuyi, GUO Xiaoxia, LI Zhi, JIAN Caiyuan, TIAN Lu, REN Xiaoyun, GONG Qianheng   

  1. Special Crops Institute, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, China
  • Received:2019-07-11 Published:2019-10-28

Abstract: In order to investigate the adaptability and physiological response of sugar beet to NaCl stress, the effects of NaCl stress on growth and physiological characteristics of sugar beet seedlings were studied by pot culture. The results showed that with the increase of NaCl concentration at the same seedling stage, seedling reservation rate began to decrease at 0.6% NaCl concentration, and plant height decreased gradually. The dry weight of sugar beet showed a single peak curve change. Low salt stress was beneficial to the increase of sugar beet biomass, and the chlorophyll content increased. The plasmalemma permeability and MDA content of leaves increased, and the cell membrane system was damaged seriously. SOD and POD activities increased, and antioxidant enzyme activities enhanced. With the advance of seedling age, the differences of seedling reservation rate, plant height, dry weight, chlorophyll content, plasmalemma permeability of leaves and MDA content gradually decreased among NaCl stress treatments, while the differences of SOD activity and POD activity gradually increased, and the salt tolerance of sugar beet increased. In conclusion, with the increase of NaCl concentration, SOD and POD activities, chlorophyll content and plasmalemma permeability and MDA content of leaves increased, but seedling reservation rate, plant height and dry weight decreased. With the advance of seedling age, the inhibition of salt on the growth of sugar beet weakened.

Key words: Sugar beet, Seedling age, NaCl stress, Growth, Physiological characteristics

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Cite this article

HUANG Chunyan, SU Wenbin, FAN Fuyi, GUO Xiaoxia, LI Zhi, JIAN Caiyuan, TIAN Lu, REN Xiaoyun, GONG Qianheng. Effects of NaCl Stress on Growth and Physiological Characteristics of Sugar Beet at Different Seedling Stages[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2019, 34(5): 163-169. doi: 10.7668/hbnxb.20190029.

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