Study On Biological Characters And Active Components Of SP₆ Generation Of Prunella Vulgaris L.

Through the determination of the biological characteristics,nutritional indexes and active components of P vulgaris of SP₆ generation,we conduct an evaluation of SP6 generation Prunella vulgaris by difference analysis,mutation analysis,cluster analysis,correlation analysis and principal component analysis.The main findings are as follows:The stage between the end of April to the middle of May,the growth of Prunella vulgaris is the strongest,between which the field management should be strengthened and the timely supply of water and fertilizer should be paid more attention to.There was no obvious precocity in each strain,and the late maturity phenomenon was obvious,which was delayed by 6-8 days compared with the control.The agronomic traits of strain I?branched?,II?large ear?,III?strain type dispersion?and IV?secondary side branch?performed well especially in the ear yield and aboveground biomass,which was suitable for high-yield ear plants and the next generation of cultivation.There was a significant positive correlation between the large ear traits and the dry weight,number of branches,number of spikes and crown width of the plants.Choosing according to the traits was beneficial to obtain high-yield and large-earth lines.There was a significant positive correlation in agronomic traits among plant height,crown width,number of branches,number of ears,ear diameter,ear length and dry weight of the ear,between which the indicators were highly interdependent.Among them,the change of the number of branches is consistent with the appearance of other agronomic traits,which is the most influential factor on the yield of Prunella vulgaris.Strains I?branches?and III?plant dispersion?have relatively high nutritional content which are suitable for green additives.The coefficient of variation of the effective components of each strain was large,and there were abundant variations.However there was no obvious regularity between the active components of each strain.The average content of rosmarinic acid,caffeic acid,total phenol and total flavonoids is higher than that of the previous three generations.The total content of total phenol and total flavonoids in strain VI?late ripening?was the highest.There is a significant correlation between the content of each active ingredient.There was a significant positive correlation between rosmarinic acid,caffeic acid,total phenol and total flavonoids.There was a significant negative correlation between ferulic acid and rosmarinic acid,caffeic acid,total phenol and total flavonoids.The correlation between fruit acid and other active ingredients was not significant.The correlation between the content of each active ingredient and the indicator characteristics of each ear was not significant.The strain VI?late maturity?and strain VII?compact strain type?have the highest active ingredient content which are suitable for selective high quality strains.Above six high-efficiency individual plants:V-2,VI-2,VI-5,VII-4,and VII-2 can be further studied and screened as high-quality strains with high potential active ingredients in the next generation.Through principal component analysis,component and ear indicators and yield factors were more reliable than other factors among the traits affecting the quality of Prunella vulgaris.There are abundant variations among various traits of Prunella vulgaris,which increase the genetic diversity.Principal component analysis method can be used to select each main component factor according to breeding requirements,which is the breeding of high-yield and high-quality Prunella vulgaris and the high yield of Prunella vulgaris Stable cultivation provides a theoretical basis.