Effects of Growth Regulators on the Main Characters and Fatty Acid Composition of Perilla

In order to provide useful information for standardized cultivation of perilla(Perilla frutescens)and for the breeding of this crop,an experiment was made with perilla germplasms native to Chongqing,and mixtures of 3 plant growth regulators(NAA,IBA and forchlorfenuron)at different concentrations with nutrition elements were foliar sprayed on the plants at the flowering stage,and seed size,1000-seedweight,oil rate,seed yield,content of essential oils in the leaves and fatty acid composition were recorded.The results showed that different concentrations of NAA,IBA and forchlorfenuron had significant influences on 1000-seed-weight,oil rate,content of essential oils in the leaves,fatty acid composition and seed yield,but had no significant influence on seed size.The treatment of forchlorfenuron at 0.8 mg/L significantly increased 1000-seed-weight and oil rate.IBA at 0.4mg/L significantly increased oil content.forchlorfenuron at 0.8mg/L,NAA at 0.2mg/L or 0.4mg/L or IBA at 0.6mg/L makedly increased the yield per plant of perilla.NAA,IBA or forchlorfenuron at various concentrations significantly improved the content of alpha linolenic acid of perilla seed.