| 1 | Herbicidal Activities of Eupatorium adenophorum Extracts by 3 Extraction Methods显示文摘[Objective] The paper was to screen the better extraction method for herbicidal active substances of Eupatorium adenophorum. [Method] Three common extraction methods, Soxhlet extraction, ultrasonic extraction and conventional extraction method, were used to prepare E. adenophorum extracts, and the herbicidal activity of E. adenophorum extracts extracted by 3 methods was studied by seed germination method. [Result] The extraction rate of Soxhlet extraction was the highest of (22.54±0.48)%, and the herbicidal activities of E. adenophorum extracted by Soxhlet extraction was relatively stronger. [Conclusion] Soxhlet extraction was the better extraction method for herbicidal active substances of E. adenophorum. | Yougui ZHA Yongqing LI Liming FAN Min YE Chun XIAO Jing WANG | 2012 | Plant Diseases and Pests2012，3，2： | 1 |
| 2 | Preliminary Study on Rooting Promotion Activity of 33 Species of Plant Extracts显示文摘[ Objective] The paper was to study the rooting promotion activity of plant extracts, so as to lay the foundation for development of natural source of rooting reagent with high efficiency, safety and environment friendship. [Method] Using mung bean rooting method, the rooting promotion effects of 33 plant extracts on mung bean section were studied. [Result] When the concentration was 1 mg/mL, Eupatorium adenopkorum (stem and leaf) , Cryptomeria fortunei (stem and leaf) , Pinus yunnanensis (stem) , Pinus yunnanensis (leaf) , Rhododendron simsii (leaf) , Pinus armandii (leaf) , Ltichi chinensis (pericarp) , Pinus armandiifruit (fruit) and Alnus cremastogyne (leaf) showed strong promotion effect on rooting of mung bean sections, and the rooting promotion rate reached over 100% ; the rooting promotion effect of E. adenophorum ( stem and leaf) was the strongest, reaching (1068.42±7.87)% , which was extremely higher than the extracts of other plants. [Conclusion] E. adenophorum (stem and leaf) , C. fortunei (stem and leaf) , P. yunnanensis (stem) , P. yunnanensis (leaf) , R. simsii (leaf) , P. armandii (leaf), L. chinensis (pericarp), P. armandiifruit (fruit) and A. cremastogyne (leaf) all contained substances with strong | Jing WANG Xia LIU Lin LIU Chun XIAO Min YE Liming FAN Yougui ZHA | 2012 | Plant Diseases and Pests2012，3，3： | 0 |
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