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Root growth of wetland plants with different root types |
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| Authors: | Chen Wenyin Chen Zhanghe He Qifan Wang Xiaoyan Wang Cairong Chen Dafeng and Lai Zenglong |
| Institution: | 1. Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China;2. Beijing City University, Beijing 100083, China;3. Department of Geography, University of North Texas, Denton, TX 76203, USA;4. National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, China;1. Centre for Ecology and Hydrology, Crowmarsh Gifford, Wallingford, Oxfordshire OX10 8BB, UK;2. UCL Department of Geography, University College London, Gower Street, London WC1E 6BT, UK;1. College of Water Sciences, Beijing Normal University, Beijing 100875, China;2. Beijing ZEHO Waterfront Ecological Environment Treatment Company, Beijing 100085, China;3. Department of Civil Engineering, Queen''s University, Kingston, ON K7L 3N6, Canada;1. Departamento de Ciências Biológicas, Escola Superior de Agricultura ‘Luiz de Queiroz’, Universidade de São Paulo, Avenida Pádua Dias 11, Piracicaba, SP 13418-260, Brazil;2. Instituto de Biologia, Universidade Estadual de Campinas, UNICAMP, PO Box 6109, Campinas, SP 13083-865, Brazil;3. Floresta Estadual de Assis, Instituto Florestal do Estado de São Paulo, Caixa Postal 104, Assis, SP 19802-300, Brazil;4. Departamento de Biotecnologia e Produção Vegetal e Animal, Universidade Federal de São Carlos, Rodovia Anhanguera, km 174 - SP-330, Araras, SP 13600-970, Brazil |
| Abstract: | A wastewater culture system was designed to study the root growth of eight species of wetland plants with two different root types. The system included a plastic barrel for holding the wastewater and a foam plate for holding the plant. The results indicated that the root growth of the plants with fibril roots was faster than that of the plants with rhizomatic roots. The species with fibril roots had higher root number (1349 per plant) than species with rhizomatic roots (549 per plant) after ten weeks of cultivation. The average root biomass of plants with fibril roots was 11.3 g per plant, whereas that of plants with rhizomatic roots was 7.4 g per plant. Fine root biomass of diameter ≤ 1 mm constituted 51.9% of the total root biomass in plants with fibril roots, whereas it accounted for only 25.1% in plants with rhizomatic roots. The root surface area of the plants with fibril roots (6933 cm2 per plant) was markedly larger than that of the species with rhizomatic roots (1897 cm2 per plant). The species with rhizomatic roots showed a longer root lifespan (46.6 days) than those with fibril roots (34.8 days). |
| Keywords: | wetland plants fibril root system rhizomatic root system growth wastewater culture |
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