Allelopathy of Hemerocallis citrina Baroni was studied by measuring the seed germination rate, germination potential,germination index,root length,stem length,root weight and stem weight with lettuce wa-tered with the aqueous extract of H. citrina Baroni. The results were following:different concentration of H. cit-rina Baroni aqueous extract significantly inhibited the seed germination. Higher concentration (0. 02 g/ml) of H. citrina Baroni aqueous extract significantly inhibited the seedling growth,while low concentration (0. 005 g/ml) of H. citrina Baroni aqueous extract has strong stimulating effect on the seedling growth. 4figs. ,3tabs. , 14refs.%为了解黄花菜浸提液的化感作用,本实验采用不同浓度黄花菜根浸提液对耐抽薹生菜的种子萌发、根长、茎长和幼苗鲜重的影响.结果表明,经黄花菜根浸提液处理后的生菜种子其发芽率和发芽指数随浸提液浓度的升高而显著降低,并且对生菜幼苗根的抑制作用强于对其幼苗茎的抑制作用.高浓度黄花菜根浸提液对生菜种子胚根和幼苗的生长表现出较强的抑制作用,而低浓度黄花菜根浸提液表现出促进作用.图4,表3,参14.
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