The influence of diagnostic criteria of different guidelines on short-term prognosis of artificial liver therapy for acute-on-chronic liver failure / 临床肝胆病杂志

ObjectiveTo investigate the influence of different diagnostic criteria on the short-term prognosis of patients with acute-on-chronic liver failure （ACLF）. MethodsA total of 115 ACLF patients who were hospitalized in Department of Gastroenterology， The Second Affiliated Hospital of Kunming Medical University， from January 2018 to January 2022 were enrolled， and all patients received internal medical treatment combined with artificial liver therapy. According to the guidelines， the patients were divided into CMA guideline group （Diagnostic and treatment guidelines for liver failure by Chinese Medical Association）（n=100）， APASL guideline group （Consensus statements of Asian Pacific Association for the Study of the Liver）（n=94）， and EASL guideline group （Criteria proposed by European Association for the Study of the Liver）（n=36）. The above three guidelines were compared in terms of 90-day mortality rate. A one-way analysis of variance was used for comprision of continuous date between groups； the chi-square test was used for comprision of categorical date between groups. The receiver operating characteristic （ROC） curve of related variables. ResultsThe 90-day mortality rate was 50.0% in the CMA guideline group， 51.1% in the APASL guideline group， and 77.8% in the EASL guideline group， and the EASL guideline group had a significantly higher 90-day mortality rate than the CMA guideline group （χ2=8.351， P=0.004） and the APASL guideline group （χ2=7.650， P=0.006）. EASL guideline had a sensitivity of 22.2% and a specificity of 92.3% in predicting the risk of short-term mortality， with an area under the ROC curve was 0.576. ConclusionACLF patients who meet EASL guideline tend to have a worse short-term prognosis， and this guideline may help to identify patients at a relatively high risk of short-term death.

Preparation and application of proficiency testing sample of myclobutanil and procymidone in apple powder / 上海预防医学

ObjectiveTo prepare pesticide residues in fruit matrix samples that meet the requirements of homogeneity and stability for the proficiency test. MethodsThe pollution-free apple was selected as the main raw material to prepare the pesticide residue proficiency test samples of myclobutanil and procymidone， and to evaluate the homogeneity and stability. The results of the proficiency test were assessed using robust analysis and Ζ value. ResultsThe homogeneity and stability of the reference materials met the relevant requirements. Among 109 laboratories participated in the proficiency testing， 107 （98.2%） laboratories had satisfactory results. Suspicious test results were reported only in two laboratories， one laboratory for each of the two assessment items. ConclusionAn apple powder matrix sample with pesticide residues is successfully prepared for proficiency test， and could provide an evaluation tool for pesticide residue testing laboratories.

Effect of DNA immune absorption on lupus pneumonia / 中国综合临床

Objective To investigate the clinical application and efficacy of DNA immune absorption in patients with lupus interstitial pneumonia.Methods to collect randomized 18 patients with lupus patients with pneumonia were enrolled in the study and randomly divided into immunoadsorption group and traditional CTX treatment group,in order to observe the ESR,CRP,ANA quantitative monitoring at different time,pulmonary function test (diffusing capacity of the lung for carbon monoxide,DLCO),6 min walking distance,procalcitonin (PCT).The difference between groups was statistically analyzed and the effect of DNA immunization was discussed.Results There were significant differences between immunoadsorption group and control group in ESR at the different time points before and after the treatment (Fgroup =7.841,P＜0.05;Fcross =6.512,P ＜0.05;Finteraction =10.421,P＜0.05),CRP(Fgroup =6.995,P＜0.05;Fcross=5.847,P＜0.05;Finteraction =8.847,P＜ 0.05) and ANA quantitative monitoring (FgrouP =12.336,P ＜ 0.05;Fcross =11.214,P ＜ 0.05;Finteraction =15.847,P＜0.05).At 1 and 2 weeks after treatment,CRP and ESR of the immunoadsorption group began to decrease,and the difference was statistically significant compared with those before treatment (P ＜0.05),while the difference between the control group and the treatment group was statistically significant after 4 weeks (P＜0.05).After 2 weeks of treatment,there was a significant difference in ANA quantitative monitoring between the immunoadsorption group,compared with that before treatment.There was a significant difference between the control group before treatment and the 6 months after treatment (P＜0.05).There was a significant difference between the immunoadsorption group and the control group in pulmonary function test (FgrouP =6.222,P＜ 0.05:Fcross =7.154,P＜ 0.05:Finteraction =8.527,P ＜ 0.05),6 min walking distance (FgrouP =8.669,P＜ 0.05;Fcross =7.154,P ＜ 0.05;Finteraction =11.547,P＜ 0.05) and PCT (FgrouP =5.621,P ＜0.05;Fcross =4.125,P ＜ 0.05;Finteraction =7.554,P ＜ 0.05.The pulmonary function and 6 min walking distance of 2-week treatment in the immunoadsorption group.There showed a significant difference compared with that before treatment.The difference between the control group after 4 weeks of treatment and that before treatment was statistically significant (P=＜0.05).There was a significant difference between the 2 weeks PCT treatment in the immunoadsorption group and that before treatment (P＜0.05).There was a significant difference between the control group after 3 months of treatment and before treatment (P ＜ 0.05).Conclusion The treatment of lupus interstitial pneumonia in traditional regimens is ineffective,and the efficacy of DNA is better than that of conventional regimens,and reduces the risk of infection.

Simultaneous esophagectomy and off-pump coronary artery bypass grafting for esophageal cancer:a report of five cases with literature review / 中华胸心血管外科杂志

Objective To explore the possibility and safety of the simultaneous esophagectomy and off-pump coronary artery bypass grafting(OPCABG) in patients suffering from esophageal cancer combined with coronary artery and summarize the clinical experiences.Methods We retrospectively analyzed the clinical dates of 5 patients performed at the Henan province Chest Hospital from May 2009 to December 2014.The related literature was reviewed.Results All patients were performed the simultaneous esophagectomy and OPCABG through the single left posterolateral thoracotomy 4cases and through median sternotomy and left thoracotomy 1 case.Instrument anastomosis under aortic arch 2 cases and above aortic arch 1 case , left neck anastomosis by hand 2 cases.Coronary artery three ressel disease 3cases, double-vessel 1 case, left main single vessel 1 case.There was no hospital death in this series.Postoperative complications included arrhythmia,anastomotic fistula and pneumonia.Only one patient was still alive, the other patients died of tumor recurrence or metastasis and median survival time was 20.6 months.Conclusion Simultaneous esophagectomy and OPCABG is a safe and feasible treatment modality in patients with severe CAD and esophageal cancer and it may be more beneficial for the patient with early esophageal cancer.

Clinical observation of aerosol inhalation of budesonide suspension for the treatment of children with acute infectious laryngitis / 中国基层医药

Objective To observe and analyze the clinical effect of aerosol inhalation with budesonide suspension liquid drug in the treatment of children with acute infectious laryngitis.Methods 76 children with acute infectious laryngitis were divided into the observation group (n=38) and control group (n=38).Two groups of chil-dren were treated with conventional therapy,on the basis of conventional therapy,the control group was given dexam-ethasone aerosol inhalation,the observation group was treated with atomization of inhalation with budesonide suspen-sion liquid.The clinical therapeutic effects of the two groups were assessed.Results The total effective rate of the observation group was 97.37%,which was significantly higher than 76.32% of the control group,the difference was statistically significant (χ2 =19.392,P<0.05).The disappeared time of fever,cough,hoarseness,dyspnea,throat beep symptoms in the observation group was (2.21 ±1.12)days,(2.21 ±0.54)days,(1.21 ±0.33)days,(1.61 ± 0.81)days,(1.23 ±0.21)days,which were significantly shorter than the control group,the differences were statisti-cally significant (t=4.118,4.362,6.369,3.943,3.946,all P<0.05).The two groups had no obvious adverse reac-tion,The duration and hospitalization time of the observation group were (2.11 ±0.72)days,(3.09 ±0.54)days respectively,which were significantly shorter than the control group (t=4.966,5.795,all P<0.05).The satisfaction rate of the observation group was (91.23 ±4.52)%,which was significantly higher than the control group,the differ-ence was statistically significant (χ2 =4.203,P<0.05).Conclusion For the children with acute infectious laryngi-tis,inhalation with budesonide suspension liquid therapy can significantly improve clinical symptoms,with no adverse reaction,shorten the course of disease and hospitalization time,reduce the physical and psychological suffering of chil-dren,improve the clinical treatment effect,promote the healthy growth of children,it is worthy of clinical application.

Surgical treatment for esophagorespiratory fistula：a report of 7 cases / 中国癌症杂志

Background and purpose:Esophagorespiratory ifstula is often accompanied with life-threatening pulmonary infection. Though the pulmonary infection can be controlled temporarily by conservative medical treatment or stent placement, but patients have a poor quality of life and short survival time. This study was to investigate the effectiveness and security of surgical treatment for patients with esophagorespiratory fistula.Methods:We retrospectively analyzed the clinical data of 7 patients with esophagorespiratory ifstula after surgical treatment between Jun. 2009 and Oct. 2013 in Henan Province Chest Hospital. The causes were the following: esophageal cancers (4 cases), congenital ifstula (1 case), diverticulum (1 case) and trauma (1 case). All patients underwent surgical treatment through thoracotomy. Surgical treatment consisted of esophagectomy gastroesophageal anastomosis and pulmonary lobectomy in 2 patients, esophagectomy gastroesophageal anastomosis and tracheal ifstula repair in 1 patient, remnant stomach repair and pulmonary lobectomy in 1 patient, esophageal ifstula repair and pulmonary lobectomy in 2 patients and esophagotracheal ifstula double deligation in 1 patient.Results:There was no perioperative death. The incidence rate of postoperative complications was 57% (4/7). Two patients got severe pulmonary infection. One patient suffered from esophageal-tracheal fistula recurrence and underwent elective jejunostomy. One patient had thoracic cavity infection. Six patients resumed normal eating after postoperative recovery. Follow-up was acquired in all cases. Three cases with benign ifstula remained well without recurrence. Four cases with malignant ifstula had an average survival time of 18.8 months (11–28 months).Conclusion:Once congenital esophagorespiratory ifstula is conifrmed, surgical management is recommended as early as possible. The selective surgical treatment for malignant esophagorespiratory ifstulas according to patient’s condition could improve the life quality and lengthen the survival time.

Dynamic accumulations of bioactive components in different germplasm Isatis indigotica and comparative of its quality of medical material / 中国中药杂志

<p><b>OBJECTIVE</b>To study the dynamic accumulations of bioactive components in different germplasm Isatis indigotica and compare its quality of medical material, in order to provide a basis for breeding and high yield cultivation of I. indigotica.</p><p><b>METHOD</b>The planting samples were collected during growth period, bioactive components in different germplasm Isatis indigotica were measured.</p><p><b>RESULT</b>The dynamic accumulations of bioactive components in different germplasm I. indigotica were consistently changed in a field experiment. The differences of bioactive components contents in medical material of I. indigotica were significant.</p><p><b>CONCLUSION</b>The germplasm from Gansu Longxi showed a high yield and good quality characters in Fuyang area, and may be applied to production.</p>

Influence of storage period and grading standards on quality of Prunella vulgaris / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the influence of storage period and grading standards on the quality of Prunella vulgaris in order to provide a theoretical basis for standardized cultivation.</p><p><b>METHOD</b>The spices of P. vulgaris in different storage period (including current year, first-year and second-year) were collected from Lujiang base in Anhui Province. The samples were randomized, with the methods of morphologic characteristics and commercial size on P. vulgaris, the samples were graded into three grades; according to the methods from the Pharmacopoeia of the People's Republic of China, water-soluble extracts, ethanol-soluble extracts, total ash and acid insoluble ash were measured, respectively, utilizing the UV spectrophotometry to detection the contents of total flavonoids and polysaccharides, the levels of ursolic acid, oleanolic acid and rosmarinic acid were adopted by HPLC.</p><p><b>RESULT</b>The total ash and acid insoluble ash of P. vulgaris showed significantly increase during prolonged storage; however, the content of water-soluble extracts, ethanol-soluble, total flavonoids, polysaccharides, ursolic acid, oleanolic acid,rosmarinic acid showed significantly decrease during prolonged storage. The spica of P. vulgaris exhibited no rules differences between the quality and grading standards, The second-degree belongs to high content of total flavonoids; the high content of polysaccharides was first-degree; the total ash and acid insoluble ash of spicas exhibited gradually decreased from first-degree to third-grade, and the content of water-soluble extracts, ethanol-soluble extracts,ursolic acid,oleanolic acid, rosmarinic acid showed gradually increased from first-degree to third-grade.</p><p><b>CONCLUSION</b>The current year was a suitable storage time of spicas from P. vulgaris could be selected; and the main bioactive components highest level of P. vulgaris spicas was third-degree, second-grade next, first-degree minimum.</p>

Influence of nitrogen forms ratio on growth and photosynthetic characteristics in Prunella vulgaris / 中国中药杂志

<p><b>OBJECTIVE</b>The effects of different nitrogen forms on the growth and photosynthetic characteristics of Prunella vulgaris were observed.</p><p><b>METHOD</b>Water culture experiments were carried out to observe the effects of NH4+: NO3- ratios(100:0, 75: 25, 50:50, 25:75, 0:100 in mmol x L(-1)) on the growth and photosynthetic characteristics of P. vulgaris.</p><p><b>RESULT</b>The leaf area, fresh biomass and P(n) of these cultivars increased with the increasing of NH4(+) -N: NO3(-) -N ratios, and they were found to be the highest in 25: 75 NH4(+) -N: NO3)-) -N. However, they decreased with the increasing NH4(+) -N: NO3(-) -N ratio further. P. vulgaris had a minimum leaf area, biomass, chlorophyll content and P(n) in pure ammonium group. The biggest chlorophyll and carotenoid contents were found in the ratios of NH4(+) -N to NO3(-) -N of 50: 50.</p><p><b>CONCLUSION</b>The results indicated that properly increasing nitrate proportion could promote the growth and photosynthesis of P. vulgaris.</p>

Effect of optimized fertilization on spicas biomass and yield of Prunella vulgaris / 中国中药杂志

<p><b>OBJECTIVE</b>To study the effects of nitrogen (N), phosphorus (P2O5), potassium (K2O) and organic compound fertilizer (OF) on spicas biomass and yield of Prunella vulgaris in order to provide a theoretical basis for good agriculture practice (GAP).</p><p><b>METHOD</b>Field plot experiments with a 4-variable quadratic orthogonal rotation combination design were adopted, and a function model of spicas yield in P. vulgaris was established.</p><p><b>RESULT</b>The model analysis showed that spicas yields of P. vulgaris were significantly influenced under the N, P2O5 and K2O applications, among there factors, N had the greatest effects on spicas yield of P. vulgaris, the next was P2O5 and K2O, OF had the smallest effects on spicas yield. At the lower fertility levels, the spicas yields of P. vulgaris were improved along with the increasing of N, P2O5, K2O and OF applications, but the spicas yields decreased when N, P2O5, K2O and OF were applied too much.</p><p><b>CONCLUSION</b>In this experiment condition, the spicas yields of P. vulgaris could reach to 722 kg x hm(-2) when the fertilizer rates were N 303. 9-335.1 kg x hm(-2), P2O5 432.5-500.6 kg x hm(-2), K2O 206.6-240.2 kg x hm(-2), OF 2 312.5-2 687.5 kg x hm(-2).</p>

Textual research on original plant and dietotherapy history of Prunella vulgaris / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the original plant and dietotherapy history of Prunella vulgaris by textual researches, and provide a theoretical basis for clinical medication, exploitation and protection of wild resources.</p><p><b>METHOD</b>The ancient literatures in the graphic, geographical distribution and morphological description of P. vulgaris were used in this studied.</p><p><b>RESULT</b>The varieties of P. vulgaris for therapeutic were no confusion. However, there has existed confusion between P. vulgaris and its confusable species (Ajuga ciliate, A. decumbens and Lagopsis supina) with appellations, morphological description and attached drawing of original plant.</p><p><b>CONCLUSION</b>The original plant is originated from two species (P. vulgaris, P. asiatica). P. hispida was used as a certified medicinal material in Yunnan province from Ming Dynasty to modern time. The dietotherapy history of P. vulgaris in China can be traced back to Ming Dynasty or before.</p>

Absorption and allocation of nitrogen, phosphorus, potassium in Prunella vulgaris and their relationship to dry matter accumulation / 中国中药杂志

<p><b>OBJECTIVE</b>The accumulation of dry matter, nitrogen, phosphorus and potassium in Prunella vulgaris and their relationships under field condition were studied, in order to provide a basis for the rational fertilization.</p><p><b>METHOD</b>Through the dynamic sampling of P. vulgaris in different growing stages, and the dry weight of plant, the amount of dry matter and the content of N, P and K within each organ of the plant were measured.</p><p><b>RESULT</b>The dry weight of P. vulgaris linearly increased with the increase of nitrogen, phosphorus and potassium accumulation, there existed a significant correlation at whole growth period. The maximum stage accumulation rate of dry matter from mid-April to the beginning of May, reached 63.71%. The amount of dry matter was mainly distribution in leaves from late March to mid-April. The distribution ratio in stem was the highest from beginning of May to late May. Until mid-June, the distribution ratio of dry matter in spicas was higher than that in other organs. The absorption amounts of N, P and K were lower before mid-April, and the nutrient element was concentrated in plant leaves. From late April to beginning of May, the N, P and K accumulation reached maximum of total absorptive capacity, which accounted for 72.35%, 59.82%, 87.41%, respectively, and the mineral elements were concentrated distribution of plant stems. When transferred to reproductive stage, both accumulation amount and distribution rate of nutrient elements in spicas increased rapidly, which reached the maximum until mid-June. From elongation stages to quaring period was the period of maximal accumulation of dry matter and showed the maximal efficiency of N, P and K nutrition.</p><p><b>CONCLUSION</b>The time from elongation stages to quaring period is the most crucial period in the growth development stage of P. vulgaris, and should be paid more attention to the supply of mineral nutrition and moisture of plant to promote spicas formation and dry matter accumulation in this stage. The average N, P2O5 and K2O absorption amount per 100 kg dry matter of spicas were 1.62, 0.36, 2.88 kg respectively, and the ratio of N-P2O5,-K2O was 1 : 0.22: 1.77.</p>

Study on content and distribution characteristics of mineral elements from cultivated and wild Prunella vulgaris / 中国中药杂志

<p><b>OBJECTIVE</b>The contents of mineral elements in soil and each organ from cultivated and wild Prunella vulgaris were determined in order to provide a theoretical basis for exploitation and protection of wild resources and GAP study.</p><p><b>METHOD</b>The contents of mineral elements (P, K, Ca, Mg, Na, Fe, Cu, Zn, Mn, Al) in soil and each organ from cultivated and wild P. vulgaris were determined by ICP-AES, and the results were analyzed by correlation analysis.</p><p><b>RESULT</b>The contents of mineral elements in soil and different organs of P. vulgaris were significant different between cultivated and wild species; the contents of P and Cu ranked in the order of spica > leaf > stem, the order of Mg, Ca, Zn, Fe, Mn, Al from high to low was leaf > spica > stem, the concentrations of K, Na were mainly distributed in leaf and stem, less in spica. A distinctly positive correlation between soil and spica for Fe content, and the relationship between soil and leaf, stem were significant positive correlation, the concentrations of Zn in spica, leaf, stem were positively related to soil, K contents in soil and stem were significant positive correlation. The different organs of cultivated and wild P. vulgaris had a strong tendency to accumulate P.</p><p><b>CONCLUSION</b>There was no direct relationship between the concentrations of mineral elements in P. vulgaris, and their corresponding soil P. vulgaris adjusts the concentration of mineral elements mainly by active absorption.</p>

Morphological and Chemical Variation of Prunella vulgaris Populations from Different Locations in China / 中草药·英文版

Objective To investigate the variation of chemical characteristics with environmental factors and establish a relationship betweem morphological characters and chemical composition of Prunella vulgaris collected in different areas of China.Methods Twelve phenotypic traits and three chemical compositions were assessed in 28 populations of P.vulgaris collected from different locations in China.Results The variability ranges observed at phenotypic and chemical levels were polymorphic.According to the morphological traits,28 populations of P.vulgaris could be grouped into six clusters,and two morpho-types could be clearly distinguished.Perceptible differences could be discerned in the plant height,leaf length,corolla length,calyx length,fruiting spikes length,and maturity period.Based on three kinds of components including ursolic acid,total flavonoids,and total polysaccharides,all populations could be identified as four types.Cluster Ⅳ showing high content of ursolic acid,total flavonoids,and total polysaccharides could be utilized to develop superior derivatives.Conclusion The variation of chemical characteristics is influenced by the genetic and environmental factors,such as soil,climate,longitude,and altitude.It provides a solid basis for efficiently evaluating qualities and establishing good agricultural practices for P.vulgaris.

Textual research on change of medicinal parts and herbal medicine of Prunella vulgaris / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the herbal medicine of Prunella vulgaris by textual researches, and provide a theoretical basis for clinical medication, exploitation and protection of wild P. vulgaris resources.</p><p><b>METHOD</b>Textual research on medicinal works of past dynasties and field work were adopted.</p><p><b>RESULT</b>The natural distributions of P. vulgaris were concentrated distribution in Sichuan province, Huaihe river basin, and Middle-Lower Yangtze river valley in Chinese history. The indications of P. vulgaris in ancient and modern times were basically identical. While there were difference between the medicinal parts, harvest period and processing methods existed difference between ancient and modern.</p><p><b>CONCLUSION</b>Three periods that whole grass of P. vulgaris as medicinal parts (from late Ming dynasty to late Qing dynasty and early stage of Republic of China), both whole grass and spicas as medicinal parts (from mid-term Republic of China to 1963), and the semi-maturity or maturity of spicas as medicinal parts (from 1963 to today) existed. The processing method for medicinal parts of P. vulgaris adopted sun drying and shady drying in ancient China, but only the sun drying was only used in modern times.</p>

Genetic variation, correlation and principle component analysis on morphological characteristics of various germplasm from Prunella vulgaris / 中国中药杂志

<p><b>OBJECTIVE</b>To study the correlation among the morphological characteristics and the spica yield of various germplasm of Prunella vulgaris.</p><p><b>METHOD</b>The various P. vulgaris germplasm from all over the country were investigated by analysis of correlation analysis, path analysis and principle component analysis in a randomized block experiment.</p><p><b>RESULT</b>The 6 morphological characteristics were greatly different from each other in various germplasm. The spica yield per plant had a very significantly positive correlation with the number of spica per plant and fresh leaves weight per plant, meanwhile the correlation between the spica yield per plant and spica length was very significantly. Three principal components which accounted for 87.533% of total variance were extracted from the principal component analysis.</p><p><b>CONCLUSION</b>The strong growth potential, the number of spica per plant and spica length were main factors for the selection of high yield breeding of P. vulgaris.</p>

Study on seed quality test and quality standard of Prunella vulgaris / 中国中药杂志

<p><b>OBJECTIVE</b>To study seed quality test, and establish seed quality classification standard of Prunella vulgaris.</p><p><b>METHOD</b>The seed quality and planting quality of P. vulgaris from different population were measured and these indexes were analyzed by K-clustering.</p><p><b>RESULT AND CONCLUSION</b>The seed purity, 1000 seeds weight, seed moisture content, seed viability of the seed of P. vulgaris from different population were measured, and the seed quality classification standard of P. vulgaris.</p>

Effects of seed priming on drought tolerence in Prunella vulgaris / 中国中药杂志

<p><b>OBJECTIVE</b>To explore an effective way to increase drought tolerance of Prunella vulgaris seed.</p><p><b>METHOD</b>The treatment of drought stress to P. vulgaris seeds was made by the different concentrations of PEG solutions. Primed seeds germinated under 25% PEG.</p><p><b>RESULT</b>As concentrations of PEG increasing, seed germination percentage, germination index and vitality index reduced. Primed with 20%-25% PEG, 300-500 mg x L(-1) GA3 and 1.6%-2.0% KNO3-KH2PO4 could enhance three population seeds germination index and vitality index under drought stress. Treated with NaCl, seeds germination percentage and germination index of two population increased, which came from Nanjing Zijinshan and Anhui Jinzhai, respectively, while those of seeds from Gansu Chengxian reduced.</p><p><b>CONCLUSION</b>Treated with PEG, GA3, KNO3-KH2 PO4 under proper concentration, seed vigor, seed resistance under drought stress would increase.</p>

Effects of sowing date on morphologic characteristics, yield and quality of Radix isatidis / 中国中药杂志

<p><b>OBJECTIVE</b>To study the effects of sowing date on morphologic characteristics, yield and quality of Radix Isatidis, in order to provide a basis for selection of the suitable sowing date.</p><p><b>METHOD</b>The experiment was carried out in a randomized complete block design arranged in split plot, the phonological period of Isatis indigotica was investigated and the morphological indexes, yield and quality at harvest were measured and determined by correlation and variance analysis.</p><p><b>RESULT</b>The different sowing dates showed a great effect on phonological period of I. indigotica. The biological characteristics, yield and active components of Radix Isatidis were negatively correlated with the sowing date, and the difference of morphological characteristics, yield and active compositions with sowing date was significant.</p><p><b>CONCLUSION</b>The suitable sowing date of I. indigotica was during the period of time from late March to beginning of the April in Fuyang area, and considering the factors of rational rotation, the time cloud delayed until late May to the beginning of June.</p>

Contrast of growth characteristics of different germplasm and correlation between morphologic and individual yield of Isatis indigotica / 中国中药杂志

<p><b>OBJECTIVE</b>To study the growth characteristics of different germplasm and analyze the correlation between morphologic and individual yield of Isatis indigotica.</p><p><b>METHOD</b>The planting samples were collected during the growth period, morphological characteristics and root yield per plant in 13 germplasm of I. indigotica from all over the country were determined by correlation and path analysis.</p><p><b>RESULT</b>The growth characteristics of various I. indigotica germplasm were consistent. The difference of morphological characteristics and root yield with various germplasm were significant. The root yield per plant was positively correlated to the main root length and the number of individual plant leaves.</p><p><b>CONCLUSION</b>The number of leaves per plant and root length are selected for high-yield lines, meanwhile, leaf length and leaf diameter are important factors for breeding high-yield lines as well.</p>