黄花菜根水浸提液对莴苣化感作用的初步研究

Allelopathic Study on Aqueous Extract From Daylily Root Plant on Lettuce

以莴苣作为受体,通过测定黄花菜根水浸提液对莴苣种子萌发和幼苗生长的影响,对黄花菜化感物质进行了研究.结果表明:浓度为5 mg/m L时,黄花菜根水浸提液对莴苣幼苗苗长表现为促进作用,对莴苣发芽率,发芽指数,根长表现为抑制作用;浓度为10、15和20 mg/m L时,黄花菜根水浸提液对莴苣发芽率,发芽指数,根长和幼苗苗长均表现为抑制作用.图4,表1,参15.

Allelopathy of daylily root plant were studied by measuring the seed germination and seed-ling growth with lettuce watered with the aqueous extract of daylily root plant.The results were following:when concentration of 5 mg/mL, daylily root plant aqueous extract has strong stimualting effect on the seedling shoot length of lettuce,and inhibited the seed germination rate,germination index,seedling root length of lettuce;when concentration of 10 mg/mL,15 mg/mL and 20 mg/mL daylily root plant aqueous extract significanthy inhibited the seed germination rate,germination index,seedling root length and shoot length of lettuce.4figs.,1tabs,15refs.