Abstract: Allelopathic effects of aqueous extracts of Phyllostachys heterocycla cv. Pubescens on seed germination and seedling growth of Festuca arundinacea were determined. Three types of aqueous extracts (stem and leaf, litter, mould) and three concentration gradients (0.10, 0.05, 0.02 g·mL-1) were used as different treatments, while distilled water was used as the control. The results showed that all of the aqueous extracts of Phyllostachys heterocycla cv. Pubescens influenced the growth indices of seed germination and seedling growth. The germination rate, germination energy, germination index and root length were significantly inhibited. Meanwhile, the vigor index, seeding height and dry weight was inhibited at higher concentration and enhanced at lower concentration.

Key words: Phyllostachys heterocycla cv. Pubescens, aqueous extracts, seed germination, seedling growth, allelopathy