首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 70 毫秒
1.
目的应用ISSR标记技术分析川乌遗传多样性。方法对江油附子和9个野生乌头居进行了ISSR分析,探索川乌各居群间的遗传多样性。结果8个引物共扩增出98条带。其中68条具有多态性,多态位点百分率为69.39%;观测等位基因数(Na)为1.6939,有效等位基因数(Ne)为1.3715,Nei′s基因多样性指数为0.2308,Shannon信息指数(I)为0.3530;用ISSR855引物能够区分川乌的10个供试居群。结论ISSR标记适合于构建川乌的DNA指纹图谱、品种鉴定和遗传多样性分析。  相似文献   

2.
目的 探讨酢浆草种质资源遗传多样性,为酢浆草遗传差异的评定及优良种质资源的筛选提供分子水平的参考依据.方法 采用简单序列重复区间(ISSR)分子标记技术对酢浆草18个居群36个样本及红花酢浆草2个居群4个样本进行遗传多样性分析.结果 从59条ISSR引物中筛选出10条引物用于PCR扩增,共扩增出89条DNA条带,其中多态性条带78条,占87.64%,平均每个引物扩增条带的数目为8.9条.利用POPGENE1.32和NTSYS-pc软件分析得出40个样本的平均有效等位基因数为1.3888,平均Nei''s基因多样性指数为0.3493,平均Shannon信息指数为0.2252;UPGMA聚类结果,在遗传相似性系数0.6558处把供试的40个样本分为4大类.结论 本研究选用的酢浆草样本遗传多样性比较丰富,酢浆草与红花酢浆草的ISSR遗传多样性差异较明显.  相似文献   

3.
目的 应用ISSR分子标记技术分析中药白芷的遗传多样性。方法 对4大类商品白芷及白芷近缘野生种兴安白芷共20个居群的白芷种质进行ISSR分析,利用NTSYS2.1e软件分析遗传相似系数,UPGMA方法聚类,构建亲缘关系系统图。结果 9条引物共得到97条扩增条带,其中多态性条带37条,占38%;20个居群的样品聚为两大类。结论 不同产地栽培白芷的遗传多样性水平较低,种质间的亲缘关系较近;而兴安白芷与4大类商品白芷存在遗传差异。  相似文献   

4.
目的 阐明不同种源人参的遗传关系。方法 用ISSR分子标记研究来自人参主要分布区17个种源样本。结果 从100个ISSR引物中筛选出10个条带清晰、多态性高的引物,共扩增出95条带,其中80条带为多态性位点,多态性条带比率(PPB)为84.21%,通过聚类分析,可将17个人参种源聚为4类。结论 分子标记研究结果与人参的形态性状存在显著的相关性,较好地揭示了人参种源间的遗传关系,可为人参资源保育和良种选育提供科学依据。  相似文献   

5.
目的 探讨不同居群北柴胡及其近缘种狭叶柴胡、大叶柴胡亲缘关系,对其进行分子标记鉴定.方法 采用RAPD技术对柴胡属3个栽培类型和4个野生居群进行亲缘关系分析.DPS v7.05软件计算Jaccard遗传距离,UPGMA方法聚类,构建亲缘关系树系图.结果 7条随机引物共扩增出71条DNA片段,其中91.5%的扩增条带表现出多态性,遗传距离在0.230 8~0.975 6.聚类分析结果表明利用RAPD技术可将全部供试材料区分开.结论 柴胡属种质资源在分子水平上存在较大差异.RAPD分子标记法可以鉴定柴胡属种质资源并揭示其亲缘关系,为药材柴胡的栽培育种及资源保护提供重要参考.  相似文献   

6.
目的 对分布于我国30个居群的叶下珠进行遗传多样性分析。方法 采用ISSR分子标记技术,研究来自我国重庆、陕西、河南、云南、广西、广东、浙江、贵州、福建、海南省区共30个叶下珠居群的遗传多样性。结果 从60个ISSR引物中筛选出24个用于扩增,共扩增得到264条条带,其中共有条带19条,多样性条带245条,多态位点百分率(PPB)为92.80%,遗传相似性系数(GS)值在0.579 5~0.916 7,多态性较高。UPGMA聚类结果显示我国叶下珠居群大致可以分为3支,即内陆分支、沿海分支及位于云南省区的过渡分支;个别居群呈现明显的居群特异性。结论 叶下珠种质资源遗传多样性较高。  相似文献   

7.
目的 评价浙南忍冬属Lonicera L. 药材遗传多样性。方法 采用ISSR和SRAP分子标记技术检测5种忍冬属药材遗传多样性,NTSYS软件处理数据,UPGMA构建聚类图;Mantel检测法对2种标记进行相关性检验;用引物分辨力(RP)、多态性条带比率(PPB)等参数对标记效率进行评价。结果 16条ISSR引物和22对SRAP引物分别扩增出232、215条带;UPGMA可将5种忍冬属药材聚为2大类,一类为金银花基原植物,另一类则为山银花基原植物,两种标记技术相关系数(r)为0.970 3。结论 ISSR和SRAP均可有效地分析忍冬属药材资源的遗传多样性,且ISSR标记技术优于SRAP。  相似文献   

8.
江苏不同产地半夏遗传多样性的ISSR分析   总被引:1,自引:0,他引:1  
目的对江苏不同产地半夏进行遗传多样性分析。方法采用ISSR-PCR技术研究江苏4个产地共20份半夏单株的遗传差异。结果从85个ISSR引物中筛选出6个条带清晰、扩增稳定、多态性高的引物,共扩增出54条带,其中43条具有多态性,多态性百分比为79.63%,通过SPSS11.5分析软件的聚类分析将江苏4个产地半夏划分为3类。结论ISSR分子标记研究结果与半夏的地理位置存在显著的相关性,可为半夏的种质划分和资源开发利用提供科学依据。  相似文献   

9.
目的 应用不同的分子标记进行柴胡药材干根遗传多样性分析,为柴胡栽培种鉴别和药材鉴别奠定基础。方法 以柴胡栽培种干根为材料,采用RAPD和AFLP两种分析方法。结果 以筛选到的3条随机引物对9个柴胡栽培种进行RAPD分析,共扩增出28条DNA带,平均每条引物组合扩增9.33条带,其中多态性带为6.67条,多态性比率为71.43%;而在AFLP分析中,筛选出4对特异性引物,共获得107条DNA带,平均每对引物扩增26.75条带,其中多态性带为23.25条,多态性比率为86.92%。经统计分析,9个柴胡栽培种RAPD和AFLP分析的Jaccard遗传相似系数分别介于0.61~0.93和0.39~0.86。UPGMA聚类分析,两种标记方法均可将9个柴胡栽培种聚为3大类群,聚类结果相似但不完全相同。结论 以柴胡药材干根为材料,RAPD和AFLP两种分子标记均可用于植物种间及种下遗传关系分析,且AFLP条带较多,多样性丰富,更有利于柴胡属植物多样性的分析。  相似文献   

10.
阳翠  刘萍  刘姣蓉  郭蒙 《医学教育探索》2013,44(10):1323-1327
目的 通过对产自宁夏、甘肃、青海、新疆和内蒙的苦豆子遗传多样性和亲缘关系的分析,为野生苦豆子资源的驯化和保护等提供依据。方法 采用ISSR分子标记技术,对22个苦豆子居群的DNA进行扩增,对其扩增条带进行遗传多样性分析,在所得遗传距离的基础上进行UPGMA聚类和主成分分析(PCA),并绘制亲缘关系树状聚类图。结果 51条ISSR引物共检测到433个位点,每条引物5~12个,平均8.49个;平均多态性位点百分率(PPB)93.30%;Nei’s遗传多样性指数(H)和Shannon信息指数(I)分别为0.335 1、0.499 8;遗传距离变幅范围0.173 6~0.650 2。结论 22个苦豆子居群间具有较高的遗传多样性,各居群间遗传距离与地理距离没有明显关系。  相似文献   

11.
CASE HISTORY A female patient, 46 years old, head of the foreign affairs department of a certain university in Beijing, paid her first visit on October 9, 2006, with the chief complaint of vomiting for one month. She got vomiting after meals in early September. Before that, she had discomfortable sensation in the stomach due to angry with others, but she didn't pay much attention. Later, it developed into vomiting after eating. After the vomiting, the discomfort would be relieved, but with slight hypodynamia. She was once diagnosed as having 'neurogenic vomiting'. Having taken some western and Chinese drugs, the above symptoms were a little bit improved, but she would have nausea upon eating and with regurgitation. Because of the fear for vomiting, she did not dare to have food intake, with body weight reduction of 6 kilos in one month.  相似文献   

12.
Radiotherapy and chemotherapy are the important modern medical therapies for malignant tumors,yet they can also bring about serious local and systemic toxic side reactions so to decrease the patient;'s life quality,manifested by a series of consumptive symptoms.Having engaged in the combined work of Chinese and western medicine for nearly 50 years,the research fellow Qiu Baoguo in Henan Provincial Academy of TCM has developed his unique views on the TCM study of consumptive syndromes.The author of this essay had once the fortune tO follow Dr.Qiu in clinic,and specially would like to introduce in the following Dr.Qiu's experience in treating consumptive syndromes after radio-chemotherapies for patients with malignant tumor.  相似文献   

13.
OBJECTIVE: To observe therapeutic effects of the comprehensive therapy of acupuncture-moxibustion and Chinese Tuina for treatment of insomnia due to deficiency of both the heart and spleen. METHODS: 92 cases were divided randomly into the treatment group (treated by acupuncture-moxibustion and Chinese Tuina) and the control group (treated by acupuncture-moxibustion). RESULTS: The therapeutic effect of the treatment group was obviously superior to that of the control group (the CHI2 test showed P < 0.01). CONCLUSIONS: The comprehensive therapy of acupuncture-moxibustion and Chinese Tuina can give marked therapeutic effects for treatment of insomnia due to deficiency of both the heart and spleen.  相似文献   

14.
15.
Objective: To investigate if there are the CK-19, PDX-1, Nestin, Ngn3 positive cells in the donor islets of different purity in rats. Methods: Thirty male adult SD rats were randomly divided into 3 groups. Islets were isolated using digestion by ductal injection of collagenase. Group Ⅰ (n=10): Separating cell preparations were not purified, Group Ⅱ(n=10): Islet sediment was purified with 25% Ficoll400 ,Group Ⅲ (n=10): Islet sediment was purified with 25% and 11% Ficoll-400. The levels of protein of CK-19, PDX-1, Nestin and Ngn3 were detected by immunohistochemistry and the mRNA of CK-19, PDX-1, Nestin, Ngn3 was amplified by RT-PCR. Results: After two different purification methods applied, three islet preparations of different purities were obtained. The difference of islet purity was significant among various groups (P<0.05). Compared with group Ⅱ and group Ⅲ,the protein and mRNA of CK-19, PDX-1, Nestin,Ngn3 were both higher in group Ⅰ; group Ⅲ was poorly expressed. Conclusions: The three different islet purity donor islet have different CK-19, PDX-1, Nestin, Ngn3 positive cells within them, indicating that there are some islet stem cells in the purified donor islet.  相似文献   

16.
Objective:To investigate the optimum screening conditions of associated proteins in human psoriasis vulgaris by serum proteomics technique, and to screen the different expression proteins related with psoriasis vulgaris. Methods:Serum samples of peripheral blood were collected from newly diagnosed psoriasis vulgaris patients in the clinic, and 20 matched healthy persons. Serum albumin IgG was removed by filtering with ProteoExtract Albumin/IgG. After comparative proteomics analysis the different protein spots were identified using 2-DE and MS. Results :Electrophoresis figures with high resolution and reproducibility were obtained. Three different expression proteins were found only in the serum from psoriasis vulgaris patients, while nine other different proteins expressing from healthy volunteers. Conclusion:The protein expression was different in the serum between the psoriasis vulgaris patients and healthy volunteers. It was hoped that we could find the biomarkers related to psoriasis vulgaris by using proteomics.  相似文献   

17.
PYTOBEZOARS are common bezoars in gastrontestinal tract, commonly seen in stomach and mall intestine,1but huge disopyrobezoars are  相似文献   

18.
CASE HISTORY A male,a retired officer of 61 years old,paid his first visit on May 12,2006.The patient stated that 2 weeks before he suddenly got paroxysmal precordial choking pain,with irregular attacks.Each attack would last several seconds to several minutes.The attack was accompanied with heavy oppressed sensation in the precordial region,palpitation,lassitude,and in severe cases,sweating,which was once diagnosed by a hospital as'coronary heart disease'.Recalling the case history,the patient said that several days before he got angry with others because of some affairs in work,and he was not so used to the life pattern since he had just retired from his busy working post.At usual times,he was quick tempered and peevish.In recent days,he had poor appetite,and loose stool.  相似文献   

19.
20.
The English edition of Chinese Journal of Integrative Medicine is edited and published by the Chinese Journal of Integrated Traditional and Western Medicine Press.Original scientific papers of advanced clinical and experimental medicine in the field of complementary/alternative medicine or integrative medicine are expected.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号