Adaptability evaluation of switchgrass (Panicum virgatum L.) cultivars on the Loess Plateau of China
文献类型：期刊论文
| 作者 | Ma Yongqing ; An Yu ; Shui Junfeng |
| 刊名 | PLANT SCIENCE
 |
| 出版日期 | 2011 |
| 卷号 | 181期号:6页码:638-643 |
| 关键词 | Biomass yield Anatomy Photosynthesis Morphological characters Adaptability Water stress |
| 通讯作者 | Ma, YQ |
| 英文摘要 | In the study, the growth traits, photosynthesis and morphology characteristics of several cultivars of switchgrass (Panicum virgatum L) have been assessed the yield potential and adaptability in diverse environments (Yangling, Dingbian of Shaanxi province, Guyuan of Ningxia) on the Loess Plateau of China. Alamo was the best adapted switchgrass cultivar for biomass production in Yangling with dry matter (DM) yields of 44.22 t/ha; Illinois USA and Cave-in-Rock grown at Guyuan had DM yield of 10.59 t/ha and 9.36 t/ha, respectively. Similarly, Cave-in-Rock in Dingbian performed better than others except the lowland cultivars (Alamo and Kanlow), which could not overcome cold stress at Guyuan and Dingbian. Moreover, Cave-in-Rock and Nebraska 28 has the highest photosynthesis rate which reflects its high productivity. Nebraska 28 and Pathfinder shown strong drought tolerance due to their higher WUE. It appears that the upland cultivars with high ploidy (e.g. 8n) would have better establishment than lowland varieties there. Optimal mown management seems to enhance the growth and productivity of switchgrass. Morphological characteristics were further studied using light-and scanning electron microscopy (SEM). Silica particles, vacuole size and other traits in switchgrass tissues (stem, leaf and root), as well as trichomes (leaf) showed that Cave-in-Rock and Pathfinder had larger stoma area, up to 824.4 mu m(2) and 770.1 mu m(2), respectively. Silica particle length was the longest in Pathfinder and shortest in Cave-in-Rock There was a highest density of silica particles in cv. Forestberg, and lowest in Cave-in-Rock and Pathfinder. The morphological characters seemed to be associated with their ploidy levels and the arid habitat from which they were selected. Therefore, if switchgrass is to be introduced and extended on the Loess Plateau of China, Cave-in-Rock and other upland cultivars with a high chromosome ploidy might be optimal choices for biomass plants. (C) 2011 Elsevier Ireland Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 中文 |
| 公开日期 | 2012-05-29 |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/4668]  |
| 专题 | 水土保持研究所_水保所知识产出(1956-2013) |
| 推荐引用方式 GB/T 7714 | Ma Yongqing,An Yu,Shui Junfeng. Adaptability evaluation of switchgrass (Panicum virgatum L.) cultivars on the Loess Plateau of China[J]. PLANT SCIENCE,2011,181(6):638-643. |
| APA | Ma Yongqing,An Yu,&Shui Junfeng.(2011).Adaptability evaluation of switchgrass (Panicum virgatum L.) cultivars on the Loess Plateau of China.PLANT SCIENCE,181(6),638-643. |
| MLA | Ma Yongqing,et al."Adaptability evaluation of switchgrass (Panicum virgatum L.) cultivars on the Loess Plateau of China".PLANT SCIENCE 181.6(2011):638-643. |
入库方式： OAI收割
来源：水土保持研究所
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