U.S. Department of Agriculture, Western Regional Research Center, 94710, Berkeley, California.
J Chem Ecol. 1986 Jun;12(6):1205-11. doi: 10.1007/BF01012342.
The allelopathic weed Russian knapweed (Centaurea repens) was found to contain polyacetylenes VIII-XIV in the roots. Dose vs. response of the root length elongation against lettuce, alfalfa, barnyard grass, and red millet showed IX to be active. Closely related isomers were not active. Examination of the soil surrounding the Russian knapweed roots revealed the presence of IX in sufficient concentration to have an appreciable effect on the surrounding plant community.
在根部分离到的化感杂草俄罗斯矢车菊（Centaurea repens）中发现含有 8-14 号多炔化合物。通过对其对莴苣、紫花苜蓿、稗草和红米的根长伸长的剂量反应试验，发现 9 号化合物具有活性。结构相近的异构体则没有活性。对俄罗斯矢车菊根周围的土壤进行检测发现，9 号化合物的浓度足以对周围的植物群落产生明显影响。
