Biomass production and allocation in Jatropha curcas L. seedlings under different levels of drought stress
文献类型：期刊论文
| 作者 | Achten, W. M. J. |
| 刊名 | Biomass & Bioenergy
 |
| 出版日期 | 2010 |
| 卷号 | 34期号:5页码:667-676 |
| ISSN号 | 0961-9534 |
| 中文摘要 | In a greenhouse experiment we applied three levels of drought stress and monitored growth variables and biomass production of Jatropha curcas seedlings propagated from three seed accessions. We determined biomass allocation, allometric relationships and plant traits. Well-watered J. curcas seedlings grew 0.81 +/- 0.15 cm day(-1) in length and produced 1.49 +/- 0.31 g dry biomass day(-1). Under medium stress (40% plant available water) the plants maintained a similar stem shape, although they grew at lower rate (stem length: 0.28 +/- 0.11 cm day(-1); dry biomass production: 0.64 +/- 0.18 g day(-1)). Seedlings under extreme drought stress (no irrigation) stopped growing, started shedding leaves and showed shrinking stem diameter from the 12th day after the start of the drought treatment. The drought treatment did not influence the wood density (0.26 g cm (3)). The root/shoot ratio of the wet treatment was 0.27, which is low compared to other tropical trees. Both the biomass allocation and root/shoot were significantly influenced by drought. Plants of the different accessions were uniform in biomass production and plant traits. The allometric relationship predicting total aboveground biomass (B) with the stem diameter (D) (B = 0.029 X D(2.33); R(2) = 0.89) fits well in universal scaling models in which the exponent is expected to converge to similar to 2.67 at plant maturity. Based on a small validation data set from mature J. curcas individuals this hypothesis could be confirmed. A second regression model predicts the total leaf area (LA) as a function of stem diameter (LA = 2.03 x D(2.41); R(2) = 0.95). The estimated transpiration crop coefficient K(cb) ranged from 0.51 to 0.60 for the well-watered plants. (C) 2010 Elsevier Ltd. All rights reserved. |
| 公开日期 | 2015-01-28 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/7580]  |
| 专题 | 西双版纳热带植物园_热带植物资源可持续利用重点实验室特色文献_小桐子相关文献 |
| 推荐引用方式 GB/T 7714 | Achten, W. M. J.. Biomass production and allocation in Jatropha curcas L. seedlings under different levels of drought stress[J]. Biomass & Bioenergy,2010,34(5):667-676. |
| APA | Achten, W. M. J..(2010).Biomass production and allocation in Jatropha curcas L. seedlings under different levels of drought stress.Biomass & Bioenergy,34(5),667-676. |
| MLA | Achten, W. M. J.."Biomass production and allocation in Jatropha curcas L. seedlings under different levels of drought stress".Biomass & Bioenergy 34.5(2010):667-676. |
入库方式： OAI收割
来源：西双版纳热带植物园
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