Water-use efficiency and carbon isotope discrimination in two cultivars of upland rice during different developmental stages under three water regimes
文献类型：期刊论文
| 作者 | Zhao, BZ; Kondo, M; Maeda, M; Ozaki, Y; Zhang, JB |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2004-04-01 |
| 卷号 | 261期号:1-2页码:61-75 |
| 关键词 | carbon isotope discrimination plant parts upland rice water regimes water-use efficiency |
| ISSN号 | 0032-079X |
| 通讯作者 | Zhao, BZ(bzhao@mail.issas.ac.cn) |
| 英文摘要 | A pot experiment was conducted in a glasshouse to clarify and quantify the effect of plant part, water regime, growth period, and cultivar on carbon isotope discrimination (CID), and to analyze the relationship between CID, stomatal behavior and water-use efficiency (WUE). The experiment was comprised of two upland rice (Oryza sativa L.) cultivars and three water regimes (100, 70, and 40% of saturation moisture) in a completely randomized design. Plants were harvested at tillering, flowering, and maturity. No significant cultivar differences in above-ground dry matter-based WUE (WUEA) and total dry matter-based WUE (WUET) were observed. WUEA (and WUET) increased with water stress up to tillering, but decreased with water stress after tillering. Significant cultivar differences in CID in all the analyzed plant parts were observed at all harvest times. Reduction in CID with water stress was greatest at tillering, and the effect was less pronounced at flowering and at maturity. At each harvest, the effect was most pronounced in newly developed plant parts. Root and grain tended to have the lowest CID values, and stem the highest, at all harvest times. A negative relationship was observed between CID measured at tillering and WUEA (and WUET) measured over the period from seedling to tillering, whereas a reverse relationship was obtained between CID measured at flowering and WUEA (and WUET) measured over the period from tillering to flowering, and an unclear relationship between CID measured at maturity and WUEA (and WUET) measured over the period from flowering to maturity. The ratio of the intercellular and atmospheric concentration of CO2 (C-i/C-a) were closely associated with CID throughout the water regimes when one cultivar was considered, however, cultivar differences in CID were not related to variations in C-i/C-a. The results indicate that significant cultivar difference existed in CID in all the analyzed plant parts at all harvest times, while corresponding difference in WUEA (and WUET) between the cultivars was not necessarily consistent. |
| 收录类别 | SCI |
| WOS关键词 | GAS-EXCHANGE ; GRAIN-YIELD ; WHEAT ; GROWTH ; PHOTOSYNTHESIS ; PRODUCTIVITY ; POPULATIONS ; COMPONENTS ; DEFICIT ; BIOMASS |
| WOS研究方向 | Agriculture ; Plant Sciences |
| WOS类目 | Agronomy ; Plant Sciences ; Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000222815300008 |
| 出版者 | KLUWER ACADEMIC PUBL |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558419 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Zhao, BZ |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Natl Agr Res Ctr, Dept Soils & Fertilizers, Tsukuba 3058666, Japan |
| 推荐引用方式 GB/T 7714 | Zhao, BZ,Kondo, M,Maeda, M,et al. Water-use efficiency and carbon isotope discrimination in two cultivars of upland rice during different developmental stages under three water regimes[J]. PLANT AND SOIL,2004,261(1-2):61-75. |
| APA | Zhao, BZ,Kondo, M,Maeda, M,Ozaki, Y,&Zhang, JB.(2004).Water-use efficiency and carbon isotope discrimination in two cultivars of upland rice during different developmental stages under three water regimes.PLANT AND SOIL,261(1-2),61-75. |
| MLA | Zhao, BZ,et al."Water-use efficiency and carbon isotope discrimination in two cultivars of upland rice during different developmental stages under three water regimes".PLANT AND SOIL 261.1-2(2004):61-75. |
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来源：南京土壤研究所
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