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| Content Provider | Springer Nature Link |
|---|---|
| Author | Ge, Zhen Ming Kellomäki, Seppo Zhou, Xiao Peltola, Heli Wang, Kai Yun Martikainen, Pertti J. |
| Copyright Year | 2011 |
| Abstract | We investigated the seasonal variability of effects of elevated temperature (+3.5°C), CO$_{2}$ elevation (700 μmol mol$^{−1}$) and varying water regimes (high to low water content) on physiological responses and biomass growth of reed canary grass (Phalaris arundinacea L., local field-grown cultivar) grown in a boreal environment. In controlled environment greenhouses, various physiological and growth parameters of grass, i.e., light-saturated net photosynthetic rates (P $_{nmax}$), water use efficiency (WUE) and optimal photochemical efficiency of photosystem II (F $_{v}$/F $_{m}$), and leaf area development and biomass of plant organs (leaf, stem, coarse, and fine root) were measured. During the early measurement periods, elevated temperature enhanced leaf photosynthesis and above-ground biomass of reed canary grass; however, this resulted in earlier senescence and lower biomass at the end of measurement period, compared to ambient temperature. This effect was more pronounced under water limitation. Elevated CO$_{2}$ enhanced P $_{nmax}$, WUE, and leaf area and total plant biomass (above- and below-ground) over growing season. The explanation for imbalance between stimulated photosynthesis and increase in above-ground biomass was that CO$_{2}$ enrichment causes a greater increase in the plant’s root system. The combination of elevated temperature and CO$_{2}$ slightly increases the growth of plant. Adequate water availability favored photosynthesis and biomass growth of reed canary grass. The temperature- and drought-induced stresses were partially mitigated by elevated CO$_{2}$. Other cultivars should be tested in order to identify those that are better adapted to elevated temperatures and CO$_{2}$ and variable water levels. |
| Starting Page | 637 |
| Ending Page | 648 |
| Page Count | 12 |
| File Format | |
| ISSN | 19391234 |
| Journal | BioEnergy Research |
| Volume Number | 5 |
| Issue Number | 3 |
| e-ISSN | 19391242 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2011-12-10 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Climate change Water conditions Photosynthesis Biomass Phalaris arundinacea L. Boreal zone Plant Ecology Wood Science & Technology Plant Genetics & Genomics Plant Sciences Plant Breeding/Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Renewable Energy, Sustainability and the Environment Agronomy and Crop Science |
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