Physiological and biochemical characteristics of four species of <EM>Carex</EM> with drought stress

ZHU Xiao-lou; LOU Lu-huan; WANG Hui

Volume 26 Issue 5

Oct. 2009

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ZHU Xiao-lou, LOU Lu-huan, WANG Hui. Physiological and biochemical characteristics of four species of Carex with drought stress[J]. Journal of Zhejiang A&F University, 2009, 26(5): 656-662.

Citation:

ZHU Xiao-lou, LOU Lu-huan, WANG Hui. Physiological and biochemical characteristics of four species of Carex with drought stress[J]. Journal of Zhejiang A&F University, 2009, 26(5): 656-662.

Physiological and biochemical characteristics of four species of Carex with drought stress

1.
School of Landscape Architecture，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China;
2.
School of Forestry and Biotechnology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China

More Information

Corresponding author: LOU Lu-huan
Publish Date: 2009-10-20

Abstract

To choose drought-resistant plant species for the water-saving gardens plan，four Carex species including Carex nemostachys，C. chungii，C. brunnea，and C. tristachya were as subjects. Changes in morphological index，relative conductivity，soluble sugar，proline，protective enzyme activities of four Carex species were studied under the different content of soil water by artifical controlling in pot，measured every 5 days during the period of 30 days. Results showed that leaves of the four Carex species became curly and yellow with relative conductivity as drought stress increased. After thirty days of drought，the relative conductivity of C. brunnea and C. chungii was 50%，however the one of C. nemostachys was 90%. During drought stress，there were scientific differences in soluble sugars，proline，protective enzyme activities by variance analysis（P＜0.05）. Soluble sugar，proline，and protective enzyme activities for C. nemostachys and C. tristachya increased firstly and then declined，whereas those of C. brunnea and C. chungii increased continuously. Compared with the antitheses，soluble sugar of C. brunnea increased by 435% and C. chungii increased by 491%，peroxidase activities of C. brunnea increased by 93% and C. chungii increased by 102%，and superoxide dismutase of C. brunnea increased by 82% and C. chungii increased by 79%. Through subordinate function analysis according to the data acquired and combining observation，the drought-tolerance ability of four Carex species was concluded：C. brunnea ＞ C. chungii ＞ C. tristachya ＞ C. nemostachys. ［Ch，5 fig. 4 tab. 18 ref.］
- botany,
- drought stress,
- physiological and biochemical indexes,
- Carex nemostachys,
- Carex chungii,
- Carex brunnea,
- Carex tristachya

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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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Physiological and biochemical characteristics of four species of Carex with drought stress

1. School of Landscape Architecture，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China;

2. School of Forestry and Biotechnology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China

Corresponding author: LOU Lu-huan

Publish Date: 2009-10-20

Key words:

Abstract: To choose drought-resistant plant species for the water-saving gardens plan，four Carex species including Carex nemostachys，C. chungii，C. brunnea，and C. tristachya were as subjects. Changes in morphological index，relative conductivity，soluble sugar，proline，protective enzyme activities of four Carex species were studied under the different content of soil water by artifical controlling in pot，measured every 5 days during the period of 30 days. Results showed that leaves of the four Carex species became curly and yellow with relative conductivity as drought stress increased. After thirty days of drought，the relative conductivity of C. brunnea and C. chungii was 50%，however the one of C. nemostachys was 90%. During drought stress，there were scientific differences in soluble sugars，proline，protective enzyme activities by variance analysis（P＜0.05）. Soluble sugar，proline，and protective enzyme activities for C. nemostachys and C. tristachya increased firstly and then declined，whereas those of C. brunnea and C. chungii increased continuously. Compared with the antitheses，soluble sugar of C. brunnea increased by 435% and C. chungii increased by 491%，peroxidase activities of C. brunnea increased by 93% and C. chungii increased by 102%，and superoxide dismutase of C. brunnea increased by 82% and C. chungii increased by 79%. Through subordinate function analysis according to the data acquired and combining observation，the drought-tolerance ability of four Carex species was concluded：C. brunnea ＞ C. chungii ＞ C. tristachya ＞ C. nemostachys. ［Ch，5 fig. 4 tab. 18 ref.］

Physiological and biochemical characteristics of four species of Carex with drought stress

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通讯作者: 陈斌, bchen63@163.com

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Physiological and biochemical characteristics of four species of Carex with drought stress

1. School of Landscape Architecture，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China;

2. School of Forestry and Biotechnology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China

Corresponding author: LOU Lu-huan

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Physiological and biochemical characteristics of four species of Carex with drought stress

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通讯作者: 陈斌, bchen63@163.com

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Physiological and biochemical characteristics of four species of Carex with drought stress

1. School of Landscape Architecture，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China; 2. School of Forestry and Biotechnology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China

Corresponding author: LOU Lu-huan

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1. School of Landscape Architecture，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China;

2. School of Forestry and Biotechnology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China