不同浓度茼蒿器官水浸提液对西瓜种子发芽特性的影响

采用0.001、0.01、0.1 g?mL-1的干茼蒿根、茎叶、花水浸提液处理西瓜种子，测定其发芽势、发芽率及胚根鲜质量，研究茼蒿水浸提液对西瓜种子的化感抑制率。结果表明：不同浓度茼蒿器官（根、茎叶、花）水浸提液对西瓜种子萌发有较强的抑制作用，随处理浓度升高，抑制作用越强，发芽势、发芽率、胚根鲜质量均低于对照，因此，茼蒿水浸提液浓度在0.001～0.1 g?mL-1对西瓜种子萌发存在明显的化感作用。

Effect of Different Concentrations of Garland Chrysanthemum Organ Water Extract on Seed Germination Characteristics of Watermelon

In order to study the effects of different concentrations of garland chrysanthemum organ water extract on seed germination characteristics of watermelon（Citrullus lanatus）, 0.001, 0.01 and 0.1 g?mL-1 organ water extracts from garland chrysanthemum root, stem and leaf, flower were used to treat watermelon seeds and to test seed germination characteristics. The results showed that different concentrations of garland chrysanthemum root, stem and leaf, flower water extracts could inhibit seed germination of watermelon. The inhibitory effect increased along with the concentration rise. The germinability, germination percentage, radicle quality were all lower than the control. Therefore, 0.001-0.1 g?mL-1 garland chrysanthemum organ water extracts has distinct allelopathy effect on watermelon germination.