| 假臭草水浸提液化感作用研究 |
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| 引用本文： | 王真辉,陈文庆,杨礼富,袁 坤,陈秋波.假臭草水浸提液化感作用研究[J].热带作物学报,2011,32(1):55-60. |
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| 作者姓名： | 王真辉 陈文庆 杨礼富 袁 坤 陈秋波 |
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| 作者单位： | 1. 中国热带农业科学院橡胶研究所,农业部橡胶树生物学重点开放实验室,海南儋州571737
2. 海南大学园艺园林学院,海南儋州,571737 |
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| 基金项目： | 国家自然科学基金项目(30960088) |
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| 摘 要： | 以小白菜(Brassica campestris L.ssp.Pekinensis(Lour.)Olsson),萝卜(Raphanus sativus L.),水稻(Oryzasativa L.),热研2号柱花草(Stylosanthes guianensis cv.Reyan No.2)作为测试植物,研究新鲜假臭草(Praxelisclematidea(Griseb.)King and Robinson)水浸提液对种子发芽,新鲜假臭草和风干假臭草水浸提液对幼苗早期生长的化感效应以及不同生长环境下的假臭草浸提液对萝卜幼苗早期生长的化感作用。结果表明:新鲜假臭草浸提液对4种测试植物的种子发芽都有抑制作用。假臭草叶和完整植株水浸提液的化感作用明显大于其它器官水浸提液化感作用,叶可能是假臭草释放化感物质的主要器官。风干和新鲜假臭草水浸提液在低浓度时抑制所有测试植物幼苗根系生长。在逆境(如干旱和养分胁迫)中,假臭草会释放更多的化感物质,从而导致其化感作用增强。
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| 关 键 词： | 假臭草 化感作用 水浸提液 种子发芽 幼苗生长 |
Laboratory Assessment of the Allelopathic Potential of Aqueous Extracts of Praxelis clematidea |
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| WANG Zhenhui,CHEN Wenqing,YANG Lifu,YUAN Kun and CHEN Qiubo.Laboratory Assessment of the Allelopathic Potential of Aqueous Extracts of Praxelis clematidea[J].Chinese Journal of Tropical Crops,2011,32(1):55-60. |
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| Authors: | WANG Zhenhui CHEN Wenqing YANG Lifu YUAN Kun and CHEN Qiubo |
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| Institution: | WANG Zhenhui1,CHEN Wenqing2,YANG Lifu1,YUAN Kun1,CHEN Qiubo1 1 Rubber Cultivation Research Institute/Ministry of Agriculture Key Laboratory for Tropical Crops Physiology,CATAS,Danzhou,Hainan571737,P.R.China 2 College of Horticulture and Gardening,Hainan University,China |
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| Abstract: | The allelopathic effect of aqueous extracts of fresh Praxelis(Praxelis clematidea)material on germination and of all extracts from fresh and dry Praxelis material on initial seedling growth were studied on the following crops: Chinese cabbage(Brassica campestris L.ssp.Pekinensis(Lour.)Olsson),radish(Raphanus sativus L.),rice(Oryza sativa L.)and Stylosanthes CIAT184(Stylosanthes guianensis cv.Reyan No.2).Allelopathic effect of extracts of Praxelis in various habitats were also studied.All aqueous extracts fr... |
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| Keywords: | Praxelis clematidea Allelopathy Aqueous extracts Seed germination Seedling growth |
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