ROOT GROWTH AND MORPHOLOGY OF SWITCHGRASS (PANICUM VIRGATUM L.) AND BUSH CLOVER (LESPEDEZA DAVURICA S.) IN MIXED PLANTATION UNDER VARYING SOIL WATER AND PHOSPHORUS SUPPLY CONDITIONS
文献类型：期刊论文
| 作者 | Wang, Shi-Qi1; Liu, Jin-Biao1,2; Kang, Ji-Yue3; Xu, Bing-Cheng1,3; Chen, Ying-Long1,3,4 |
| 刊名 | PAKISTAN JOURNAL OF BOTANY
 |
| 出版日期 | 2021-08-01 |
| 卷号 | 53期号:4页码:1227-1237 |
| 关键词 | Mixture ratio Root competition Root biomass Root diameter class Specific root length |
| ISSN号 | 0556-3321 |
| DOI | 10.30848/PJB2021-4(41) |
| 通讯作者 | Xu, Bing-Cheng(Bcxu@ms.iswc.ac.cn) |
| 英文摘要 | Water and phosphorus (P) are two major factors affecting plant growth on the Loess Plateau of China. To clarify root response of introduced species to native species in mixture under varying water and P supplies would be favorable for assessing their interactions. This study investigated the effects of soil water, P and mixture ratio on root growth and morphology of switchgrass (Panicum virgatum L.) (an introduced C-4 perennial herbaceous grass) and bushclover (Lespedeza davurica S.) (a C-3 perennial leguminous subshrub) in mixtures in a pot experiment. Two soil water regimes [75 +/- 5% field capacity, FC (high water, HW) and 35 +/- 5% FC (low water, LW)], three P treatments (addition of 0, 0.05 and 0.1 g of P2O5 per kg dry soil) and 5 mixture ratios of the two species (12:0, 8:4, 6:6, 4:8, 0:12) were complemented. Results showed that switchgrass tended to decrease root average diameter (RAD) and increase specific root length (SRL) under LW comparing with HW, while bushclover showed the opposite trends. P application significantly (p<0.05) deceased the RAD of switchgrass under LW, while had no effect on SRL, resulting in a thinner root system with higher root tissue density. Regardless of soil water regimes, SRL of bushclover decreased significantly after P application. Root biomass and total root length of switchgrass were increased with the decrease of mixture ratio, while both parameters decreased in bushclover. In mixture with switchgrass, bushclover decreased SRL and proportion of fine root length (0-0.5 mm diameter class). The present study implied that switchgrass would be superior when mixed with bushclover, and P application might increase the abilities of switchgrass in competing and acquiring for limited resources. |
| WOS关键词 | MEDICAGO-SATIVA L. ; LOESS PLATEAU ; PERENNIAL LEGUMES ; BIOMASS ; PLASTICITY ; MAIZE ; CHINA ; COMPETITION ; GRASSLANDS ; ALLOCATION |
| 资助项目 | National Key Research and Development Program of China[2016YFC0501703] ; Startup Foundation of Heilongjiang Bayi Agricultural University[XYB202009] |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000647795400010 |
| 出版者 | PAKISTAN BOTANICAL SOC |
| 资助机构 | National Key Research and Development Program of China ; Startup Foundation of Heilongjiang Bayi Agricultural University |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/162617]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xu, Bing-Cheng |
| 作者单位 | 1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Heilongjiang Bayi Agr Univ, Coll Agron, Daqing 163319, Heilongjiang, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 4.Univ Western Australia, Sch Agr & Environm, Inst Agr, LB 5005, Perth, WA 6001, Australia |
| 推荐引用方式 GB/T 7714 | Wang, Shi-Qi,Liu, Jin-Biao,Kang, Ji-Yue,et al. ROOT GROWTH AND MORPHOLOGY OF SWITCHGRASS (PANICUM VIRGATUM L.) AND BUSH CLOVER (LESPEDEZA DAVURICA S.) IN MIXED PLANTATION UNDER VARYING SOIL WATER AND PHOSPHORUS SUPPLY CONDITIONS[J]. PAKISTAN JOURNAL OF BOTANY,2021,53(4):1227-1237. |
| APA | Wang, Shi-Qi,Liu, Jin-Biao,Kang, Ji-Yue,Xu, Bing-Cheng,&Chen, Ying-Long.(2021).ROOT GROWTH AND MORPHOLOGY OF SWITCHGRASS (PANICUM VIRGATUM L.) AND BUSH CLOVER (LESPEDEZA DAVURICA S.) IN MIXED PLANTATION UNDER VARYING SOIL WATER AND PHOSPHORUS SUPPLY CONDITIONS.PAKISTAN JOURNAL OF BOTANY,53(4),1227-1237. |
| MLA | Wang, Shi-Qi,et al."ROOT GROWTH AND MORPHOLOGY OF SWITCHGRASS (PANICUM VIRGATUM L.) AND BUSH CLOVER (LESPEDEZA DAVURICA S.) IN MIXED PLANTATION UNDER VARYING SOIL WATER AND PHOSPHORUS SUPPLY CONDITIONS".PAKISTAN JOURNAL OF BOTANY 53.4(2021):1227-1237. |
入库方式： OAI收割
来源：地理科学与资源研究所
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