|Table of Contents|

Physiological Response of Fraxinus velutina to NaCl Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年10
Page:
70-75
Research Field:
Publishing date:

Info

Title:
Physiological Response of Fraxinus velutina to NaCl Stress
Author(s):
LIU Haiman1; 2; FENG Xiaohui1; 2; LIU Yi3; ZHANG Xiumei1; WANG Yuzhen1; LIU Xiaojing1
（1.Institute of Genetics and Developmental Biology Center of Agricultural Resources Research，Chinese Academy of Sciences/Key Laboratory of Agricultural Water Resources，Shijiazhuang，Hebei 050022；2.University of Chinese Academy of Sciences，Beijing 100049；3 Agricultural Research Institute of Nandagang Management District，Cangzhou，Hebei 061103)
Keywords:
salinization; Fraxinus velutina; NaCl stress
PACS:
-
DOI:
10.11937/bfyy.201610018
Abstract:
aking new strain salt tolerance Fraxinus velutina and normal F.velutina  as experimental materials, pot culture were conducted to investigate the Na+,K+,biomass and water content changes of F.velutina，which were irrigated with NaCl stress concentration of 0 g?kg-1，1 g?kg-1，2 g?kg-1，3 g?kg-1，4 g?kg-1，5 g?kg-1，6 g?kg-1，7 g?kg-1 mass concentration.The results showed that the selected new strain F.velutina’s salt-tolerance ability was better than the normal F.velutina；the main mechanism of salt tolerance was polysalt and increasing soluble sugar content.The salt tolerance F.velutina threshold was 5 g?kg-1，1 g?kg-1 higher than ordinary F.velutina.Along with further breeding, F.velutina could be used as a good greening tree species of the Bohai Sea salt-affected area.With salt stress concentration increased，Na+absorption of salt tolerance F.velutina increased,the fundamental order of accumulation in various organs changed with the salt stress concentration.In 1-3 g?kg-1,the order was root>stem>leaf;above 4 g?kg-1,the order was leaf>stem>root.The total accumulation of Na+ in salt tolerance F.velutina was higher than normal F.velutina,when in low salt stress situation，Na+ accumulate in root，accumulate in leaves in high salt stress situation,polysalt significantly.Under high-salt circumstance，the content of soluble sugar in salt tolerance F.velutina higher than the normal F.velutina，and increased with the increase of salt stress.

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Last Update: 2016-07-11