|Table of Contents|

Effects of Salt Stress on Antioxidant Enzyme Activity of Pecan (Carya illinoensis K.Koch) Seedlings

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年18
Page:
23-28
Research Field:
Publishing date:

Info

Title:
Effects of Salt Stress on Antioxidant Enzyme Activity of Pecan (Carya illinoensis K.Koch) Seedlings
Author(s):
ZHANG Jianhong1; 2; HONG Chuntao1; SHEN Dengfeng1; 2; WEI Bin1; JIAO Yun1; PAN Cunde2
(1.Institute of Forestry,Ningbo Academy of Agricultural Sciences,Ningbo，Zhejiang 315040;2.College of Forestry and Landscape,Xinjiang Agricultural University,Urumqi,Xinjiang 830052)
Keywords:
pecan; survival rate; salt stress; antioxidant enzyme; Na+/K+
PACS:
-
DOI:
10.11937/bfyy.20220589
Abstract:
The container seedlings of one-year-old Carya illinoensis ‘Pawnee’ were used as test materials,and NaCl solutions of different concentrations 0% (CK),0.3%,0.4%,0.5%,0.6%,0.7% were used to treat them with salt stress to determine the tolerance concentration,and treated with different NaCl concentrations (0%,0.3%,0.6% and 0.9%) to study the effects of salt stress on its phenological period,leaf antioxidant enzyme activities and the Na+/K+,in order to provide reference for planting Carya illinoensis.The results showed that after the 0.3% NaCl treatment,the deciduous time of the pecan was 26 days earlier than that of the control,the survival rate was 97.1%,which was the same as that of the control;and the survival rate of the plants after the salt concentration reached 0.7% NaCl was 49.5%.In addition,the Na+/K+ and proline (Pro) content in leaves of ‘Pawnee’ seedlings significantly increased with the increase of NaCl concentration level;in addition,the content of malondialdehyde (MDA) and superoxide dismutase activity (SOD),peroxidase activity (POD),and catalase activity (CAT) increased with the increase of NaCl concentration in the first 10 days or 30 days of treatment;but in the later stage of salt treatment,especially,at high NaCl concentration for the levels of 0.6% and 0.9%,its activity showed a downward trend with the increase of stress treatment time.

References:

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Last Update: 2022-11-23