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1.
金银花ISSR分子标记及遗传多样性分析 总被引：6，自引：0，他引：6
以湖南、山东、河南的22个金银花主要栽培品种为材料,利用ISSR分子标记对22个金银花品种进行了遗传多样性分析.结果表明:从100条ISSR引物中筛选出10条能够扩增出清晰、稳定条带的引物;这10条引物对22个金银花品种基因组DNA扩增,共扩增出108条带,其中多态性条带96条,多态性条带比率为88.89%;22个金银花品种间的遗传相似性系数范围在0.41~1.00,平均遗传相似性系数为0.68.利用U PGM A进行系统聚类分析,22个供试金银花品种划分为2大类,第1类为忍冬种群,第2类为灰毡毛忍冬种群,每一大类又分为北方种群与南方种群.而且主成分分析结果支持以上的聚类分析结果.可见,利用ISSR标记可有效地分析金银花种质资源的遗传多样性,为金银花品种鉴别、分类、种质资源的有效利用提供理论依据. 相似文献
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桂花优良品种‘珍珠彩桂’遗传多样性的ISSR分析及指纹图谱构建 总被引：1，自引：0，他引：1
利用ISSR分子标记技术对44个桂花品种进行遗传多样性研究,从100条引物中筛选出10条引物对供试材料基因组总DNA进行PCR扩增,共扩增出条带122条,其中多态性条带112条,多态性比例为91.8%。经Pop Gen32软件包分析,44个桂花品种的平均有效等位基因数为1.592 8,平均Nei’s基因多样性指数为0.341 9,平均Shannon信息指数为0.506 3,遗传一致度介于0.475 4~0.926 2之间,说明桂花品种间遗传多样性较高。UPGMA聚类将44个品种分成7类。建立了新品种‘珍珠彩桂’和其它43个桂花品种的DNA指纹图谱,可从分子水平将‘珍珠彩桂’与现有其它桂花栽培品种进行鉴别。研究结果为桂花分类、品种鉴定、分子育种和子代鉴定提供了重要依据。 相似文献
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从96条S系列RAPD引物中筛选出能稳定扩增并具有多态性的13条引物,对25个李品种进行了RAPD分析.结果表明,只用S17、S459和S1169等3条引物就能鉴别出所供试的25个李品种.利用PopGene软件中的UPGMA方法对供试25个李品种进行分子聚类分析,取LD=0.45,可将这25个李品种分为8类. 相似文献
5.
黄杨是栽植很广的庭园观赏灌木,美国长木植物园从世界各地收集了许多优良品种.仅从形态上来区别这些黄杨品种是很困难的.为鉴定20个黄杨优良品种,我们分别从形态特征（叶、习性和长势）和分子标记（AFLP标记）两方面着手,综合分析它们的亲缘关系.三个AFLP引物结合在75和500bp DNA片段间一共产生212个条带.每一个黄杨品种平均有74个条带,最低者有50条,最高者有108条;通常可用于签定的特有条带在0到15条之间.品种间的遗传距离介于0.028和0.439之间.用PAUP软件,我们得到一个UPGMA树状图,并将每一步有显著差异的标在图上.从分子特性来讲,这20个黄杨优良品种可能起源于4到5个种,并可很清楚地分为12个栽培变种.形态特征也支持分子特性的结论.由此可见,结合形态特征和分子标记是确定遗传关系、鉴定栽培变种和分子辅助定性育种的一个很好的方法. 相似文献
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《中南林业科技大学学报(自然科学版)》2016,(10)
为了解决油茶良种生产上种苗品种混乱的问题,本研究采用ISSR分子标记技术,对广西岑溪软枝油茶10个优良无性系进行分子鉴别及遗传分析,结果表明:筛选出10条多态性高、条带清晰、稳定性好的引物,共扩增得到108条条带,81条为多态性条带,多态性比率占75%;根据引物扩增的ISSR图谱条带,建立了10个‘岑软系列’无性系的ISSR鉴定识别卡,其中3条引物可独立对区分所有供试品种;聚类分析表明,岑软系列无性系间遗传距离为0.083~0.448之间,在遗传距离为0.411处可较明显将10份供试材料可分为2类。 相似文献
7.
几个桉树优良无性系的ISSR指纹图谱分析 总被引：1，自引：0，他引：1
利用ISSR-PCR方法对尾叶桉广林4号、巨尾桉广林5号、巨尾桉广林9号3个优良桉树品种(无性系)及粗皮桉的34个个体进行了基因组多态性分析,从100个ISSR引物中筛选出4个多态性引物用于正式扩增,共扩增出63条DNA条带,其中多态性DNA条带54条,占其总扩增带数的85.7 %,平均每个引物扩增的DNA带的数目为13.5条.实验不仅检测到3组无性系之间、无性系和实生苗之间的特异性条带,还根据ISSR扩增结果,利用UPGMA法构建了3个桉树品种(无性系)及1个桉树外缘种的聚类树状图,在一定程度上反映了其种间的遗传关系. 相似文献
8.
14个油茶良种遗传多样性的SRAP分析 总被引：2，自引：0，他引：2
对14个油茶良种进行SRAP标记(序列相关扩增多态性)的遗传多样性分析。采用改良CTAB法提取的油茶叶片基因组DNA为模板,利用优化的SRAP-PCR反应体系,从16个正向引物和20个反向引物中筛选出条带特异、多态性好、稳定性高的8对引物组合。利用这些引物组合对14个油茶良种扩增出65条清晰可重复的条带,其中22条是多态性条带,多态性条带百分率为33.85%。通过生物学软件对所得数据进行遗传学分析,计算出遗传相似系数,绘制出分子聚类图,为油茶良种的后续分子鉴定及分子育种提供了科学基础。 相似文献
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以5个美洲黑杨新品种(丹红杨、南杨、中林2025杨、中红杨和全红杨)为实验材料,利用CE-AFLP(毛细管电泳-AFLP)技术,采用EcoR I+3/Mse I+3和Pst I+2/Mse I+3引物组合构建指纹图谱,并进行遗传多样性分析.结果表明:从36对引物组合中筛选出12对扩增条带数目多、稳定且清晰的引物进行扩增,共获得条带数877条,多态性条带数315条,平均多态率为35.92％.采用UPGMA法进行聚类分析,相似系数为0.74～1.00;丹红杨与南杨之间的差异较大;在相似系数0.98时,中林2025杨与中红杨和全红杨分为两类,11条稳定特异的条带可以作为鉴别它们的依据;全红杨和中红杨之间未监测到稳定清晰的特异条带,初步认为2个品种在基因组水平上没有明显差异. 相似文献
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Jianming Gao Yong Zhang Chunguo Wang Shougong Zhang Liwang Qi Wenqin Song 《New Forests》2009,37(3):333-344
Amplified fragment length polymorphism (AFLP) was used in genetic fingerprinting of 22 elite Chinese Populus deltoides and Populus × canadensis accessions. The results indicated that each of the nine AFLP primer pairs selected generated fingerprint profiles that were
unique to each of the accessions. Therefore, each accession was definitively identified by any of the nine primer pairs. Furthermore,
the inter-accession genetic relationships inferred based on 461 polymorphic fragments from the nine AFLP primer pairs were
largely consistent with phylogenetic relationships based on morphologic traits. Bootstrap analysis showed that three AFLP
primer pairs were required to obtain genetic similarity values with a maximum CV of 10% while 10 AFLP primer pairs could give
a maximum CV of 5%. Thus, AFLP can readily be applied for a rapid and accurate evaluation of the degree of similarity between
poplar cultivars. In this study, the number of AFLP fragments used was sufficient to establish a reliable estimate of genetic
similarity among accessions, with a maximum CV of 5.12%. Therefore, the information on the genetic relationships among the
poplar accessions generated in this study in connection with knowledge on agronomic traits may have an impact on poplar breeding
and planting in China. 相似文献
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杨属部分种及杂种的AFLP分析 总被引：11，自引：3，他引：11
利用13对AFLP引物对杨属4个派19个种及杂种的47个无性系进行分析,共检测到858个标记,其中多态性标记为771个,多态性位点的百分率为89.9%,每对引物产生的多态性位点的百分率在80.7%～98.1%之间,表明杨属种间及无性系间在DNA水平上存在广泛变异.根据AFLP标记结果计算杨属派间、派内种间、种内无性系间分子遗传距离,对它们的亲缘关系进行定量描述.聚类分析结果表明,派间聚类与经典形态分类完全一致,派内种间及种内无性系间聚类与形态分类基本相同.最后,探讨根据分子标记结果进行杂交亲本选配及杂种子代早期选择的可行性. 相似文献
14.
Genetic relationships among Prunus mume var. pendula were studied by using AFLP markers. 18 accessions representing 14 cultivars ofPrunus murne var. pendula were selected from the germplasm collection at the Research Center of China Mci Flower. Seven Mse I-EcoR I AFLP primer combinations revealed 450 legible bands, and 269 of which were polymorphic markers. A similarity matrix was prepared using the simple matching coefficient of similarity and Nei‘s (72) distance coefficient. A UPGMA dendrogram demonstrated the genetic relationships of the cultivars. The information given by AFLP markers was basically consistent with the morphological classification and the evolutionary history of the morphotypes, and roughly supported the new revised classification system for Chinese Mci Cultivars. But there were still several exceptions: 1) the ‘Guhong Chuizhi‘ inserted between the ‘Tiaoxue Chuizhi‘ and the ‘Danfen Chuizhi‘; 2) the ‘Wufu Chuizhi‘ kept off the Pink Pendant Form, and the ‘Moshan Chuizhi‘ was removed from Viridiflora Pendant Form; 3) the ‘Danbi Chuizhi‘ and the ‘Shuangbi Chuizhi‘ of Viridiflora Pendant Form got together well but fell within the Pink Pendant Form. 相似文献
15.
苹果属种、杂交种及品种之间关系的AFLP分析 总被引：3，自引：1，他引：2
用AFLP技术,对72个苹果属植物样本(34个种、变种、杂交种及38个品种)进行遗传多样性分析.在64对AFLP引物中选出6对引物进行扩增,得到有效谱带1692条,其中多态谱带1547条,多态谱带比率为91.4%.对72个样品的试验数据进行聚类分析,它们的相似系数为0.54～0.82.在相似系数0.60处参试材料被分为4大类,即佛罗伦萨苹果(Malus florentina)为一类;绿苹果组(Sect.Choromeles)和多胜苹果组(Sect.Docyniopsis)分别各聚一类;花楸组(Sect.Sorbomalus)、脱萼组(Sect.Gymnomeles)和苹果组(Sect.Malus)聚为一类,所有苹果品种和观赏海棠品种全聚在原产亚洲的花楸组、脱萼组及苹果组中.亚洲原产的苹果属植物对于苹果及观赏海棠品种的发展起重要作用.根据试验结果及文献资料,支持将佛罗伦萨苹果组(Sect.Florentinae Cheng M.H.)成立单种组;建议将原属花楸组植物除佛罗伦萨苹果外,全部并入苹果组;取消脱萼组,将其组内的植物全部并入苹果组. 相似文献
16.
Jianming Gao Shougong Zhang Liwang Qi Yong Zhang Chunguo Wang Ruiyang Chen Wenqin Song 《Frontiers of Forestry in China》2007,2(2):204-209
Accurate identification of varieties (clones) and knowledge of their genetic relationships are essential for poplar breeding
and variety management. In this study, 21 elite poplar varieties of Tacamahaca and Aigeiros in China were fingerprinted using amplified fragment length polymorphism (AFLP) markers. Four AFLP primer pairs developed
generated totally 181 AFLP polymorphic fragments, and in particular, each primer pair generated fingerprint profiles specific
to each of the tested varieties. The genetic relationships among the varieties were evaluated by dendrograms and multidimensional
scaling (MDS). The results showed that the tested poplar can be classified into five groups, and indicated the clear separation
of varieties of different sections of poplar and the primary distinction between native and exotic poplar varieties. This
study indicated that tested poplar varieties could be identified by their fingerprint profiles and that genetic relationships
deduced from the study were consistent with their genealogy. In addition, our results demonstrated that AFLP could be used
to construct DNA fingerprints of polar clones at a large-scale level and to determine genetic relationships of poplar varieties.
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Translated from Acta Botanica Yunnanica, 2006, 28(1): 85–90 [译自: 云南植物研究] 相似文献
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Shalini Goyat K. Hima Bindu Devendra Singh R.S. Katiyar S.K. Tewari 《East African Agricultural and Forestry Journal》2017,82(2-4):118-129
Betel vine has been identified as an important cash crop in India. It is a vegetatively propagated plant and more than 100 landraces (cultivars) are cultivated in India. They are often named after the localities where they are grown. To assess the molecular genetic diversity among 10 betel vine cultivars, amplified fragment length polymorphism (AFLP) markers were used. Five AFLP primer combinations produced 323 bands of which 155 were polymorphic, leading to a 47.99% polymorphism. Average polymorphic information content (PIC) was 0.14 over all primer combinations. Genetic similarity was calculated from the Jaccard's similarity coefficient (r) value for all accessions which varied from 0.39 to 0.81, with an average of 0.60 implying a medium level of genetic variation between investigated cultivars. Cluster analysis divided the cultivars into two main clusters where M2 and M3 were closely related but F3 was separate from all others. The cluster analysis based on AFLP data indicated that cultivars were not grouped according to their geographic place of collection but rather by genetic relatedness. The principle coordinate analysis (PCA) of the markers was linked to the dendrograms generated by employing UPGMA. 相似文献
18.
杨树部分种的AFLP遗传多样性分析 总被引：1，自引：2，他引：1
利用10对AFLP引物对杨属5个派20个种及杂种的44份杨树材料进行分析.结果表明:在这些材料中,不同引物组合的多态性均为100%,表明杨属种间及无性系间在DNA 水平上存在广泛变异.利用 UPGMA 法对 AFLP 数据进行聚类分析,相似系数在 0.765～0.971 之间,派间聚类与经典形态分类完全一致,派内种间及种内无性系间聚类与形态分类基本相同.构建了 44 份材料的指纹图谱,在该图谱中,每个材料都具有自身独特的条带.最后,探讨根据分子标记结果进行杂交亲本选配及杂种子代早期选择的可行性. 相似文献
19.
本研究在对选择性扩增引物进行筛选的基础上,对银白杨、N001杨及银白杨×N001杨杂交子代共10个样本进行了AFLP试验,并利用Popgene和NTsys软件分别对遗传多样性参数及个体聚类进行分析。结果表明:筛选出的8对选择性扩增引物,共扩增出969条谱带,多态性条带数929条,多态性比例为95.76%,平均有效等位基因数为1.4329,Nei's平均遗传多样性指数为0.2662,Shannon平均信息指数为0.4161。不同杂交子代在E-ACC/M-CAC引物对上均有特异位点,这些特异位点用于申报优良品种保护。在通过NTsys软件聚类后,在遗传相似系数为0.76时,将10个试样分为2个大支,其中N001杨为1个AFLP群,银白杨及8个杂交子代为1个AFLP群;当遗传相似系数为0.79时,银白杨与8个杂交子代的AFLP群又细化为2个亚群,其中杂交子代2和杂交子代6聚合为亚群1,银白杨和其余6个杂交子代为亚群2。本研究的结果多态性比例很高,对样品的区分率达到100%,为杨树AFLP分析检测提供了较好的应用和指导借鉴价值。 相似文献
20.
十一种槭属植物遗传多样性AFLP分析 总被引：4，自引：0，他引：4
采用了AFLP技术分析了槭属十一种植物的遗传多样性,从12对AFLP引物中筛选出5对多态性高、分辨率清晰的引物,其中选择最优的3个引物组合分别扩增出101、163、178条多态性带。三对引物(E ACG/M CAG、E ACA/M CAT、E AAC/M CAC)共扩增出484条带。分析结果按UPGMA类平均法进行聚类,聚类结果显示将11种械属植物聚为I、Ⅱ、Ⅲ三大类,其中羊角槭和栓皮槭,长尾秀丽槭和毛脉槭,复叶槭与剑叶槭之间的亲缘关系最近。 相似文献