Studies On Comprehensive Characters Of Different Strains Of Pinellia Ternata In JingZhou

Pinellia ternata(Thunb.) Breit,a Chinese traditional materia medica,its tubers uesed as medicines,which has the effects of removing dampness,against emesis, removing mass and dispersing the accumulation of the formula,et al.The P.ternata originated in Jingzhou or Qianjiang city,Hubei province,named "Jing Banxia",which are cleanness,massiness,with enough granular powder that well-known at home and abroad. The article studied the morphological variations of different P.ternata strains from Hubei and Guizhou.Then comprehensive comparison of the several P.ternata strains in biology, physiology,stress-resistance,yield and quality has been made.We obtained a good strain of P.ternata,which provided basis for breeding new Jing Banxia cultvars.The conclusion as following:1 Different strains of Jingzhou P.ternata has lots of morphological variations.The leaf shaps index can been used as the morphological classification foundation by analysis of correlation and principal component of morphological characters.2 There was two growth cycle of Jingzhou P.ternata.And there was obvious difference in growth rhythm of different strains.The XY and KY strains has the early emerging time and better uniformity,the sprout tumble period also has better uniformity, which was favor of united production control.3 Asexual reproductive ablity had significant positive correlation with yield.The KY strain has the best reproductive ablity and higher yield,the later was XY,the worst was TY and GZ-TY.4 The Pn of different strains of P.ternata was decreased obviously under shading treatment,midday depression of photosynthesis was also remarkably improved.The KY strain has the better Pn and light energy utilization.5 The rule of dry matter accumulation and NPK uptake by TY strain is S type cure. The N:P:K ratio was 1:0.63:0.87.6 Comprehensive compared the protective enzyme activity,lipid peroxidation,leaf water status and damaged degree of different strains of P.ternata under artificial simulated high temperature and drought stress.The results showed that XY and KY has better stress resistance.We investigated the occurrence and damage status of striped back hawk moth and tuber rot disease in field,the XY was damaged slightly,the KY followed,the TY and GZ-TY was damaged seriously.7 The potted and field yield experiments showed that KY strain has the highest harvest index(HI) and avarage per Mu yield(PMY),which was 8.58 and 651.07 kg/667m^-2.The XY followed,was 7.21 and 599.84 kg/667m^-2.The GZ-TY and TY has the lower HI and PMY.But in total alkaloid and guanosine content,the XY strain was the best,it reached 0.0648%and 0.0211%,which has ovbious quality advantages. 8 There was obvious difference in comprehensive score of different strains of P. ternata by marking method of yield,quality and stress resistance.The XY has the highest score,it was 90.31,which was the best strain.To determination and extension the XY strain,variety comparative and production test was needed.