Heat resistance of <em>Salvia splendens</em> with salicylic acid added and high temperature stress

GONG Zhongxing; HE Yong; ZHU Zhujun

doi:10.11833/j.issn.2095-0756.2015.05.007

Volume 32 Issue 5

Sep. 2015

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GONG Zhongxing, HE Yong, ZHU Zhujun. Heat resistance of Salvia splendens with salicylic acid added and high temperature stress[J]. Journal of Zhejiang A&F University, 2015, 32(5): 701-707. doi: 10.11833/j.issn.2095-0756.2015.05.007

Citation:

GONG Zhongxing, HE Yong, ZHU Zhujun. Heat resistance of Salvia splendens with salicylic acid added and high temperature stress[J]. Journal of Zhejiang A&F University, 2015, 32(5): 701-707. doi: 10.11833/j.issn.2095-0756.2015.05.007

Heat resistance of Salvia splendens with salicylic acid added and high temperature stress

doi: 10.11833/j.issn.2095-0756.2015.05.007

1.
Linjiang College, Hangzhou Vocational and Technical College, Hangzhou 310018, Zhejiang, China;
2.
School of Agriculture and Food Science, Zhejiang A & F University, Lin’an 311300, Zhejiang, China

Received Date: 2014-12-27
Rev Recd Date: 2015-04-13
Publish Date: 2015-10-20

Abstract

To increase heat resistance with Salvia splendens, one of the most important bedding plants in south China where high summer temperatures decrease its growth, this study measured the effects of high temperature （39 ℃ day/30 ℃ night） on heat damage indexes, relative electric conductivity （REC）, antioxidant enzyme activities, and chlorophyll fluorescence parameters in two cultivars of Salvia splendens: Hangtian No. 5 and Zhanwang. The experimental design consisted of a control （25 ℃, day and night） and three treatments （high temperature, 0.01 molL-1 SA spraying, combination of high temperature and SA spraying） was arranged in a randomized, complete block design with 3 replicates, giving a total of 48 plants, and statistical assays were carried out by analysis of variance （ANOVA） using SAS software. Results showed that by the 6th day compared to control plants, spraying with SA significantly （P＜0.05） decreased the heat index inHangtian No. 5andZhanwang. Also with high temperature stress, SA significantly decreased （P＜0.05） leaf relative electrolyte leakage increases for both cultivars. Furthermore, SA increased （P＜0.05） ascorbate peroxidase （APX） and catalase （CAT） activities as well as soluble protein content more in the heat sensitive cultivar Hangtian NO. 5 than Zhanwang. In addition, SA treatment along with high temperature stress significantly （P＜0.05） decreased superoxide dismutase （SOD） and peroxidase （POD） activities and increased maximum efficiency of Photosystem Ⅱ （Fv /Fm） in both cultivars. These results indicated that the increase in heat tolerance using SA could be related to the enhancement of antioxidant enzyme activity and the decrease of oxidative damage and photo-damage of PS Ⅱ with high temperature.［Ch, 8 fig. 20 ref.］
- plant physiology,
- Salvia splendens,
- heat resistance,
- salicylic acid,
- resistance

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Heat resistance of Salvia splendens with salicylic acid added and high temperature stress

1. Linjiang College, Hangzhou Vocational and Technical College, Hangzhou 310018, Zhejiang, China;

2. School of Agriculture and Food Science, Zhejiang A & F University, Lin’an 311300, Zhejiang, China

Received Date: 2014-12-27

Rev Recd Date: 2015-04-13

Publish Date: 2015-10-20

Key words:

Abstract: To increase heat resistance with Salvia splendens, one of the most important bedding plants in south China where high summer temperatures decrease its growth, this study measured the effects of high temperature （39 ℃ day/30 ℃ night） on heat damage indexes, relative electric conductivity （REC）, antioxidant enzyme activities, and chlorophyll fluorescence parameters in two cultivars of Salvia splendens: Hangtian No. 5 and Zhanwang. The experimental design consisted of a control （25 ℃, day and night） and three treatments （high temperature, 0.01 molL-1 SA spraying, combination of high temperature and SA spraying） was arranged in a randomized, complete block design with 3 replicates, giving a total of 48 plants, and statistical assays were carried out by analysis of variance （ANOVA） using SAS software. Results showed that by the 6th day compared to control plants, spraying with SA significantly （P＜0.05） decreased the heat index inHangtian No. 5andZhanwang. Also with high temperature stress, SA significantly decreased （P＜0.05） leaf relative electrolyte leakage increases for both cultivars. Furthermore, SA increased （P＜0.05） ascorbate peroxidase （APX） and catalase （CAT） activities as well as soluble protein content more in the heat sensitive cultivar Hangtian NO. 5 than Zhanwang. In addition, SA treatment along with high temperature stress significantly （P＜0.05） decreased superoxide dismutase （SOD） and peroxidase （POD） activities and increased maximum efficiency of Photosystem Ⅱ （Fv /Fm） in both cultivars. These results indicated that the increase in heat tolerance using SA could be related to the enhancement of antioxidant enzyme activity and the decrease of oxidative damage and photo-damage of PS Ⅱ with high temperature.［Ch, 8 fig. 20 ref.］

Heat resistance of Salvia splendens with salicylic acid added and high temperature stress

doi: 10.11833/j.issn.2095-0756.2015.05.007

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Heat resistance of Salvia splendens with salicylic acid added and high temperature stress

doi: 10.11833/j.issn.2095-0756.2015.05.007

1. Linjiang College, Hangzhou Vocational and Technical College, Hangzhou 310018, Zhejiang, China;

2. School of Agriculture and Food Science, Zhejiang A & F University, Lin’an 311300, Zhejiang, China

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Heat resistance of Salvia splendens with salicylic acid added and high temperature stress

doi: 10.11833/j.issn.2095-0756.2015.05.007

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通讯作者: 陈斌, bchen63@163.com

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Heat resistance of Salvia splendens with salicylic acid added and high temperature stress

doi: 10.11833/j.issn.2095-0756.2015.05.007

1. Linjiang College, Hangzhou Vocational and Technical College, Hangzhou 310018, Zhejiang, China; 2. School of Agriculture and Food Science, Zhejiang A & F University, Lin’an 311300, Zhejiang, China

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1. Linjiang College, Hangzhou Vocational and Technical College, Hangzhou 310018, Zhejiang, China;

2. School of Agriculture and Food Science, Zhejiang A & F University, Lin’an 311300, Zhejiang, China