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题名: THE STRATEGIES OF MORPHOLOGY, REPRODUCTION AND CARBOHYDRATE METABOLISM OF Hydrilla verticillata (Linn.f.) Royle IN FLUCTUATING WATERS
作者: Wei, Hua1, 3; Cheng, Shuiping2; Tang, Haibin1, 3; He, Feng1; Liang, Wei1; Wu, Zhenbin1, 3
通讯作者: Wu, ZB (reprint author), Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China.
关键词: Vegetation replanting ; water level fluctuation ; Hydrilla verticillata (Linn.f.) Royle ; morphology acclimation ; biomass production ; carbohydrate metabolism
刊名: FRESENIUS ENVIRONMENTAL BULLETIN
发表日期: 2013
卷: 22, 期:9, 页:2590-2596
收录类别: SCI
文章类型: Article
部门归属: [Wei, Hua; Tang, Haibin; He, Feng; Liang, Wei; Wu, Zhenbin] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Cheng, Shuiping] Tongji Univ, Key Lab Yangtze River Water Environm, Minist Educ, Shanghai 200092, Peoples R China; [Wei, Hua; Tang, Haibin; Wu, Zhenbin] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: Major Science and Technology Program for Water Pollution Control and Treatment [2009ZX07106-003, 2011ZX07303-001]
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
摘要: Hydrilla verticillata (Linn.f.) Royle is usually employed as a pioneer species for vegetation replanting in China. The morphology, reproduction and carbohydrate storage of H. verticillata were examined at different water depth gradients (30, 60, 90, 120 and 150 cm) in an outdoor mesocosm with 10-week experiment duration. The results indicated that H. verticillata could acclimatize itself to different water depths and conditions via physiological and morphological changes in the life history. However, in different water depth, the strategies of morphology acclimations, reproduction and carbohydrate metabolism showed various states, and some significant differences were detectable between them in most measured indexes. The relative growth rate (RGR) of the plants increased with water depth until 120 cm, which were 74.1 +/- 2.5 mg.g(-1).d(-1) dry weight (DW) and 68.6 +/- 2.2 mg.g(-1).d(-1) DW at 120 and 90 cm water levels. The number of ramets and shoots, especially the flowering buds number & biomass, which is important for colonization and the maintenance of macrophyte populations, were relatively higher at 90 cm water level. Among the three different non-structural carbohydrates (soluble sugar, reducing sugar and starch) measured, which can increase the ability of the plant to re-grow, or survive time periods of seasonal dormancy, H. verticillata in 90 cm water depth allocated and stored significantly higher contents of starch and soluble sugar (P<0.05). Consequently, 90 cm would be the optimal water depth for the growth of H. verticillata compared with the other levels.
英文摘要: Hydrilla verticillata (Linn.f.) Royle is usually employed as a pioneer species for vegetation replanting in China. The morphology, reproduction and carbohydrate storage of H. verticillata were examined at different water depth gradients (30, 60, 90, 120 and 150 cm) in an outdoor mesocosm with 10-week experiment duration. The results indicated that H. verticillata could acclimatize itself to different water depths and conditions via physiological and morphological changes in the life history. However, in different water depth, the strategies of morphology acclimations, reproduction and carbohydrate metabolism showed various states, and some significant differences were detectable between them in most measured indexes. The relative growth rate (RGR) of the plants increased with water depth until 120 cm, which were 74.1 +/- 2.5 mg.g(-1).d(-1) dry weight (DW) and 68.6 +/- 2.2 mg.g(-1).d(-1) DW at 120 and 90 cm water levels. The number of ramets and shoots, especially the flowering buds number & biomass, which is important for colonization and the maintenance of macrophyte populations, were relatively higher at 90 cm water level. Among the three different non-structural carbohydrates (soluble sugar, reducing sugar and starch) measured, which can increase the ability of the plant to re-grow, or survive time periods of seasonal dormancy, H. verticillata in 90 cm water depth allocated and stored significantly higher contents of starch and soluble sugar (P<0.05). Consequently, 90 cm would be the optimal water depth for the growth of H. verticillata compared with the other levels.
关键词[WOS]: LIGHT REQUIREMENTS ; GROWTH ; DEPTH ; MACROPHYTE ; ALLOCATION ; BIOMASS ; RESTORATION ; PLANTS ; LAKES
语种: 英语
WOS记录号: WOS:000326911700014
ISSN号: 1018-4619
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19782
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Tongji Univ, Key Lab Yangtze River Water Environm, Minist Educ, Shanghai 200092, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
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