玉米叶水浸提液对不同产地黄芩种子的化感效应

以不同产地的黄芩(Scutellaria baicalensis)种子为材料，研究了不同质量浓度（0、0.005、0.010、0.020、0.030和0.040 g·mL-1）玉米（Zea mays）叶浸提液对黄芩种子萌发和幼苗生长的影响。结果表明，低质量浓度（0.005、0.010、0.020 g·mL-1）的玉米叶水浸提液对不同产地黄芩种子的萌发有明显的化感促进作用；随着水浸提液质量浓度的提高，其对受体的促进作用逐渐减弱、消失，甚至表现为抑制作用。在试验质量浓度范围内，玉米叶水浸提液对黄芩种子的幼苗根长、苗高、相对电导率、可溶性糖含量及可溶性蛋白含量均表现为促进作用，最佳质量浓度为0.020 g·mL-1。玉米叶水浸提液可以在某种程度上促进黄芩种子的萌发和幼苗的生长。

Allelopathy effects of aqueous extract of maize leaf on Scutellaria baicalensis seeds

This study examined allelopathy effects of aqueous extract of maize(Zea mays) leaf on seed germination and seedling growth of Scutellaria baicalensis obtained from different regions and treated with different concentrations(0,0.005,0.010,0.020,0.030,and 0.040 g·mL-1) of the aqueous extract.The results showed that low concentrations(0.005,0.010 and 0.020 g·mL-1) of maize leaf aqueous extract stimulated the seed germination rate of S.baicalensis significantly.With the concentration of the aqueous extract increasing,the seed germination rates of all the receptors decreased gradually and were inhibited when the aqueous extract concentration reacheed a certain level.The results also indicated that maize leaf aqueous extract enhanced the root length,shoot height,relative electricity conductivity,content of soluble protein and content of soluble sugar of receptor plants.The S.baicalensis seeds treated with 0.020 g·mL-1 concentration of maize leaf aqueous extract gave stronger promoting allelopathy than that of other concentration.Maize leaf aqueous extract can promote seed germination and seedling growth of S.baicalensis.