牡丹不同器官的除草活性研究

［目的］ 明确牡丹不同器官的除草活性,为进一步开展活性化合物的研究提供依据。［方法］ 以生菜、黄瓜、反枝苋、苘麻、小麦和稗为受试植物，采用琼脂混粉法进行室内活性测定。［结果］ 除茎器官外，牡丹其他各器官的粉末在10 g/L的添加浓度下，对各受体植物幼苗的生长均具有明显的抑制作用，且对胚根（或种子根）的抑制效果明显高于对胚轴（或胚芽鞘）的抑制。各器官中以根和叶的效果最好，花、果实和叶柄次之，茎最低。6种受体植物中，反枝苋幼苗的敏感性最高，而黄瓜最低。［结论］ 牡丹的不同器官粉末在10 g/L的添加浓度下对各受体植物幼苗的生长均具有不同程度的抑制作用。

Herbicidal activities of different organs of Paeonia suffruticosa

Objective] It is aimed to understand the herbicidal activities of different organs of Paeonia suffruticosa,so as to provide the evidence for further study of active compounds.Method] The studies were conducted using seedlings of Lactuca sativa var.ramosa,Cucumis sativus,Amaranthus retroflexus,Abutilon theophrasti,Triticum aestivum and Echinochloa crus-galli as the receiver plants by the method of grinded plant tissue powder mixed with agar(PPA) in the laboratory.Result] The growth of different receiver p...