Study on Influence of Low Temperature Stress on Cold Resistance Indices of the Different Walnut Strains

被引：0
作者：
He, Q. [1 ]
Wu, J. [1 ]
Wang, J. Y. [1 ]
Zhang, C. H. [1 ]
Cui, L. [1 ]
Wang, G. [1 ]
Guo, X. B. [2 ]
机构：
[1] Shanxi Acad Forestry Sci, Taiyuan, Peoples R China
[2] Shanxi Forestry Germchit Manage Stn, Taiyuan, Peoples R China
来源：
VII INTERNATIONAL WALNUT SYMPOSIUM | 2014年 / 1050卷
关键词：
walnut; SOD activity; MDA; free proline; cold resistance; PLANTS;
D O I：
10.17660/ActaHortic.2014.1050.28
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
The experiment was carried out on one-year-old branches of 'Jin RS-1' (a new walnut rootstock strain bred by Shanxi Academy of Forestry Sciences, 2011), 'Zhonglin 1', 'LuGuang', 'JinXiang', and treated at 5 temperature regimes: 0, -10, -20, -30 and -40 degrees C. The effects on SOD total activity, MDA content and free proline content under the low temperature stress has been analyzed. As the temperature decreases, SOD total activity in the four cultivars increased to a certain level and later declined at -40 degrees C treatment. The SOD total activity in 'JinXiang' and 'LuGuang' showed two peaks with alternating 'high-low' trend; SOD total activity in 'Jin RS-1' and 'Zhonglin1' showed a 'high-low' trend. There were significant differences in SOD total activity (P< 0.05) among the 4 walnut strains. The MDA content of the 4 strains raised with fall of temperature, 'Jin RS-1' and 'LuGuang' showed 'low-high' trend, 'JinXiang' and 'Zhonglin1' showed 'high' trend; there were significant differences (P< 0.05) among the 4 strains in the MDA content. The free proline content of the 4 strains raised with fall of temperature, but the changes in free proline content between the 4 strains were different, and the free proline contents under the same temperature treatment showed significant differences (P< 0.05).
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页码：217 / 222
页数：6
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