Journal of Northern Agriculture ›› 2019, Vol. 47 ›› Issue (4): 115-121.doi: 10.3969/j.issn.2096-1197.2019.04.20

• Horticulture • Previous Articles     Next Articles

Effects of salt stress on physiological characteristics and ion distribution of tomato seedlings

SONG Yang1, CUI Xiaohan1, ZHANG Ming2, MIAO Chunle3, CUI Shimao1, YE Lihong1   

  1. 1.Inner Mongolia Protected Horticultural Engineering Technology Research Center,College of Agronomy,Inner Mongolia Agricultural University,Hohhot 010019,China;
    2.Bairin Right Banner Agricultural Technology Extension Integrated Station,Bairin Right Banner 025150,China;
    3.Ordos Economic Crops Work Station,Dongsheng 017200,China
  • Received:2019-03-14 Online:2019-08-20 Published:2019-12-10

Abstract: In this experiment,“CM966” tomato was used as the experimental material to study the activity of the reactive oxygen scavenging system and ion distribution characteristics of tomato seedlings under NaCl stress.The results showed that increasing NaCl concentration increased the activities of CAT,SOD and POD in tomato leaves.With increasing time of NaCl treatment,MDA and Pro contents showed upward trends,which indicated that the ROS in tomato leaves could not be completely removed by the protective enzyme system,and there was still a large amount of residue.With the increase of NaCl concentration,the contents of K+ in CM966 roots and stems showed significant downward trends. On the contrary,the content of K+ in the leaves showed an upward trend,while the contents of Na+ in the leaves and stems of CM966 showed upward trends.When the NaCl concentration was no higher than 100 mmol/L,the Na+ content in CM966 roots showed an upward trend,and a downward trend when the concentration was higher than 150 mmol/L.With the increase of NaCl treatment concentration,K+/Na+ of tomato seedlings showed a decreasing trend.

Key words: Tomato, Salt stress, MDA, Pro, CAT, SOD, POD, Na+

CLC Number: 

  • S432.31