Department of Agricultural Biochemistry, University of Hawaii, 96822, Honolulu, Hawaii.
J Chem Ecol. 1991 Jan;17(1):1-8. doi: 10.1007/BF00994417.
Four major chemotypes ofCyperus rotundus L. (purple nutsedge) have been reported based on the composition of essential oils in mature tubers. Distribution of the H, M, K, and O type in countries of the Pacific Rim and Basin was investigated. In general, the H type dominates on the islands of Japan, and the O type has the widest range of distribution. The O type also dominates the Pacific Basin islands except for Hawaii, where the K-type is dominant. Inhibitory activity of the essential oils fromC. rotundus tubers against the seedling growth of lettuce and oats was in the order of H > M > K > O. Seven major sesquiterpenes were isolated from the oils and their inhibitory activities determined. Results suggest thatC. rotundus of different chemotypes may have different allelopathic activity in the crop-weed interaction.
根据成熟块茎中精油的成分，已报道香附子（黑荸荠）有四种主要的化学型。研究了环太平洋和环盆地国家中 H、M、K 和 O 型的分布。一般来说，H 型在日本岛屿上占主导地位，而 O 型的分布范围最广。除了夏威夷，那里以 K 型为主，O 型也在太平洋盆地的岛屿上占主导地位。香附子块茎精油对生菜和燕麦幼苗生长的抑制活性顺序为 H > M > K > O。从精油中分离出七种主要的倍半萜，并测定了它们的抑制活性。结果表明，不同化学型的香附子在作物-杂草相互作用中可能具有不同的化感活性。
