Eastern Regional Research Center, 19118, Philadelphia, Pennsylvania.
J Chem Ecol. 1986 Jun;12(6):1533-43. doi: 10.1007/BF01012370.
The allelopathic interaction between sorghum [Sorghum bicolor (L.) Moench] and 10 species of grass and broadleaf weeds was investigated. Germination of weed seeds was slightly inhibited or stimulated, depending on species, when incubated in closed Petri dishes with germinating sorghum. Subsequent radicle and hypocotyl or coleoptile elongation of weeds was significantly inhibited by the germinating sorghum. For weeds interplanted with sorghum and grown under greenhouse conditions. The inhibitory effect on some weed species was still evident after 2 months of growth. Significant differences were found in the dry matter per weed plant grown in pots in proximity to sorghum vs. weeds grown in monoculture. Aqueous leachates from pots planted with sorghum alone or from a system in which sorghum roots protruded into water had strong allelopathic activity. These results indicate that water-soluble allelochemicals are produced by germinating sorghum seeds and that production of these substances continues during seedling growth.
研究了高粱（高粱）[高粱 bicolor（L.）莫恩奇]与 10 种禾本科和阔叶杂草之间的化感相互作用。当在带有发芽高粱的密闭 Petri 盘中孵育时，杂草种子的萌发受到轻微抑制或刺激，具体取决于物种。随后，发芽的高粱显著抑制杂草的胚根和下胚轴或 coleoptile 伸长。对于与高粱间作并在温室条件下生长的杂草，在生长 2 个月后，对某些杂草物种的抑制作用仍然明显。在靠近高粱生长的杂草植物与单种栽培的杂草植物的每株杂草的干物质方面存在显著差异。从单独种植高粱的盆中浸出的水浸液或从高粱根系伸出到水中的系统中浸出的水浸液具有很强的化感活性。这些结果表明，萌发的高粱种子产生了水溶性化感化合物，并且在幼苗生长过程中这些物质的产生仍在继续。
