Effects of Lantana camara on Germination of Lettuce Seed and Growth of Seedling
YU Xi-hong;Department of Normal Education,Jieyang Vocational and Technical College Jieyang;
[Objective]The aim was to understand the invasive mechanism of L.camara and the effect on plant growth and the germination characteristics of light seed.[Method]The effects of ethanol extracts of L.camara leaves on germination of lettuce seed and growth of seedling in different conditions of light and dark were studied by indoor germination method.[Result]Under the condition of light,ethanol extract of L.camara had a considerable inhibitory effect on germination rate,germination vigor,germination index and root length of lettuce,and the allelopathy has a concentration effect,but no effect on bud growth.In the dark treatment,low concentrations(less than 250 μg /ml) of L.camara ethanol extract could improve the lettuce seed germination rate,germination vigor,germination index,bud length and root length,which indicated that the ethanol extract of low concentration had certain positive effect on light seed lettuce in the dark.[Conclusion]The research results provide theoretical basis for introducing chemical mechanism of exotic plant invasion.
【CateGory Index】： S451