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[研究目的]RAPD技术已广泛用于种质资源遗传多样性研究,中国梨属植物资源丰富,通过对RAPD多态性引物的筛选,为RAPD技术在梨属种质资源中的应用提供参考;[方法]以梨属44个种和品种为试验材料,通过RAPD扩增技术,筛选RAPD多态性引物;[结果]从50个随机引物中筛选出18个多态性引物,所选出的多态性引物每个引物扩增出的条带数在4~11之间,扩增出的DNA片段分子量大多在450~2000 bp之间,共扩增出118个条带,其中样品间相同的条带数有11条,呈现多态性的条带107条,所选引物的多态百分率达90.8%.[结论]所筛选的18个引物为梨属植物RAPD扩增多态性引物,可广泛用于梨属植物的RAPD扩增技术. 相似文献
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银杏雄株种质资源遗传多样性研究 总被引:1,自引:0,他引:1
[目的]分析银杏雄株种质资源的遗传多样性,为其保存和育种创新奠定基础。[方法]采用改进的CTAB法提取来自11个省的银杏雄株叶片的基因组DNA,随机引物经初筛和复筛后用于RAPD扩增,并运用POPGENE软件分析银杏雄株种质资源的遗传多样性。[结果]从100多对随机引物中筛选出12对扩增带清晰、重复性和多态性好的引物,将其用于RAPD扩增和遗传多样性分析。利用筛选出的12对RAPD引物对40个样品进行PCR扩增,得到96条清晰条带,其中41条有多态性。银杏雄株种质资源的平均有效等位基因数为1.6440,平均基因多样度为0.3752,平均Shannon信息指数为0.5562。[结论]银杏雄株种质资源具有丰富的遗传多样性,对其有效保存和合理利用具有重要意义。 相似文献
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选用4份咖啡种质资源为材料,对S1-S100共100个RAPD引物进行筛选,选出多态性好的引物10个。利用这10个RAPD引物对28份咖啡资源进行扩增,共获得86条带,平均每个RAPD引物扩增出8.6条带,多态性谱带74条,多态性条带比率为86.0%。结果表明:供试咖啡种质资源遗传多样性较丰富;10个多态性好的RAPD引物中S8的鉴别效率最高,能将全部供试材料全部区分开,通过整合软件录入如所属种类、种质名称、采样地点、引物、RAPD-PCR扩增数据以及电泳图片等相关信息,形成指纹图谱二维编码,构成咖啡种质资源的DNA指纹图谱,为咖啡种质资源品种权益保护及分子身份证构建奠定了基础。 相似文献
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[目的]为分析不同种源西红花的遗传多样性和亲缘关系,利用RAPD标记技术对8种西红花基因组DNA的多态性进行分析。[方法]应用22个随机引物对8个西红花品种进行RAPD分析,并根据RAPD的扩增结果,应用NTSYS-pc 2.10e软件进行聚类分析。[结果]从22个随机引物中筛选出18个多态性较高的引物,共扩增出143条DNA条带,其中108条为多态带,占总数的75.5%,平均每个随机引物扩增的DNA带数为7.9条;在遗传相似系数0.62处将8个样品分为2类,一类为药用西红花,另一类为观赏西红花。[结论]RAPD法能有效鉴别药用西红花和观赏西红花,分子聚类结果与地理因素未见确定联系。 相似文献
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[目的]提取女贞不同种质材料的基因组DNA,并筛选RAPD引物。[方法]采用改良CTAB法提取女贞基因组DNA,并以此种方法提取的女贞基因组DNA为模板,对RAPD引物进行PCR扩增,筛选有效引物。[结果]筛选出21个多态性丰富、条带清晰且重复性好的有效引物,经检测所获得的基因组DNA条带清晰,且OD260/DD280在1.8左右。用筛选出的21个有效引物对126份女贞种质材料进行RAPD—PCR扩增,均可获得带型丰富且清晰可辨的DNA指纹图谱。[结论]该方法为快速和准确地应用RAPD方法分析女贞种质材料的遗传多样性提供了依据。 相似文献
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[目的]利用ISSR分子标记技术对选择的富士芽变优系和12个苹果品种为材料进行分子鉴定,构建指纹图谱,并且根据聚类分析的结果确定这13个苹果品种的亲缘关系.[方法]从100条ISSR引物中对供试样品进行PCR扩增筛选,采用NTSYSpc2.10t软件根据Nei's遗传相似系数采用UPGMA法进行聚类,此分析亲缘关系,并采用POPGENE1.32软件计算多态性位点数、多态性点百分率,最终筛选出条带清晰、多态性较高、稳定且重复性好的引物.[结果]从100个ISSR引物中筛选出3个多态性高、重复性好的引物,分别为UBC846、UBC881和UBC899,共在57个位点扩增出条带,其中50个为多态性位点,平均多态性位点百分率为86.11;.利用3条多态性ISSR引物构建的数字化指纹能够有效地区分出所有供试材料,且建立了13个苹果品种的亲缘关系聚类图,这13个品种的相似系数的变化范围在0.67 ~0.82,表现出较高的遗传多样性.[结论]ISSR分子标记技术可以有效地用于苹果种质资源评价、指纹图谱的构建和苹果芽变品种的鉴定,为苹果的种质资源鉴定、遗传多样性检测和栽培育种提供了分子生物学依据. 相似文献
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[目的]提取女贞不同种质材料的基因组DNA,并筛选RAPD引物。[方法]采用改良CTAB法提取女贞基因组DNA,并以此种方法提取的女贞基因组DNA为模板,对RAPD引物进行PCR扩增,筛选有效引物。[结果]筛选出21个多态性丰富、条带清晰且重复性好的有效引物,经检测所获得的基因组DNA条带清晰,且OD260/OD280在1.8左右。用筛选出的21个有效引物对126份女贞种质材料进行RAPD-PCR扩增,均可获得带型丰富且清晰可辨的DNA指纹图谱。[结论]该方法为快速和准确地应用RAPD方法分析女贞种质材料的遗传多样性提供了依据。 相似文献
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北海文昌鱼遗传多样性的RAPD分析 总被引:1,自引:0,他引:1
【目的】了解北海文昌鱼的遗传背景,探讨其遗传多样性发生变化的原因并提出保护建议。【方法】运用RAPD技术对33份北海文昌鱼样本进行遗传多样性检测。【结果】从30个随机引物中筛选出8个重复性好、条带清晰的引物;对每个样品的基因组DNA进行扩增,共获得56个RAPD位点,其中多态位点28个(占50.00%),RAPD产物分子量在220~1500bp之间;个体间遗传相似系数平均为0.8736,个体间遗传距离平均为0.1264;群体Shannon信息指数为0.2190,Nei's基因多样性指数为0.1391;中性检测结果表明所有位点均符合中性假说。【结论】相对于厦门文昌鱼和青岛文昌鱼,北海文昌鱼遗传多样性较低,但仍具有一定的遗传多样性,今后应进一步加强北海文昌鱼种质资源的管理和保护。 相似文献
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[目的]对40份亚麻种质资源进行分类。[方法]通过RAPD技术分析,利用类平均法(UPGMA)进行了聚类分析。[结果]从供试材料中筛选出11条具有多态性的RAPD引物。RAPD引物共扩增到71条清晰的多态性条带,多态性比率为88.8%。对标记结果进行了UPGMA聚类分析,聚类结果表明地理位置相近的品种聚为一类。[结论]为大批量亚麻种质资源的鉴定和分类以及资源的有效利用提供了理论依据。 相似文献
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油棕新品种遗传多样性的ISSR分析 总被引:1,自引:0,他引:1
[目的]从DNA分子水平上对油棕新品种进行遗传多样性的分析,为这些新选育油棕种质的开发利用提供分子水平的理论依据。[方法]应用ISSR技术对海南和云南的22份油棕新品种进行遗传多样性分析。[结果]用23个引物共扩增得到201条扩增条带,其中多态性条带占41.8%。聚类分析可将22个品种明显的划分为2大类:采自海南的R1~R12新种质材料与采自云南的V20新种质材料聚为一类;采自云南的其余新种质材料聚为一类。[结论]海南与云南新选育的油棕种质材料可能来源于不同的国家或地区。 相似文献
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Genetic Diversity in Wild Populations of Poacynum hendersonii from Inland Arid Regions of Northwest China 总被引:3,自引:0,他引:3
ZHAO Jin-feng ZHANG Wei-ming PENG Xue-mei TANG Ze-zi GU Gong-ping LU Chang-mei College of Life Sciences Nanjing Normal University Nanjing Nanjing Institute for Comprehensive Utilization of Wild Plants 《(《农业科学与技术》)编辑部》2008,(4)
[Objective] Study on the genetic diversity in wild populations of Poacynum hendersonii.[Method] Random amplified polymorphic DNA(RAPD)technique was employed to analyze the genetic diversity in five wild populations of P.hendersonii sampled from Xinjiang,Gansu and Qinghai provinces.[Result] Totally 165 clear and repeatable bands were generated in RAPD reaction by using 20 primers screened from 80 primers,of which 110 were polymorphic,accounting for 66.67%.At species level,Nei's gene diversity index(H),Shannon's information index(I)and genetic differentiation coefficient(Gst)were 0.220 5,0.304 7 and 0.908 2,respectively.P.hendersonii germplasm resources share a high level of genetic diversity,and genetic differentiation mainly exists among the populations.Results from genetic distances and cluster analysis showed that relationships among P.hendersonii populations were to some extent related with their geographical and climatic characters.[Conclusion] This study suggests that the conservation of P.hendersonii should focus on the protection of many populations,particularly the Qinghai population. 相似文献
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《(《农业科学与技术》)编辑部》2008,(4)
[Objective] Study on the genetic diversity in wild populations of Poacynum hendersonii.[Method] Random amplified polymorphic DNA(RAPD)technique was employed to analyze the genetic diversity in five wild populations of P.hendersonii sampled from Xinjiang,Gansu and Qinghai provinces.[Result] Totally 165 clear and repeatable bands were generated in RAPD reaction by using 20 primers screened from 80 primers,of which 110 were polymorphic,accounting for 66.67%.At species level,Nei's gene diversity index(H),Shannon's information index(I)and genetic differentiation coefficient(Gst)were 0.220 5,0.304 7 and 0.908 2,respectively.P.hendersonii germplasm resources share a high level of genetic diversity,and genetic differentiation mainly exists among the populations.Results from genetic distances and cluster analysis showed that relationships among P.hendersonii populations were to some extent related with their geographical and climatic characters.[Conclusion] This study suggests that the conservation of P.hendersonii should focus on the protection of many populations,particularly the Qinghai population. 相似文献
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《(《农业科学与技术》)编辑部》2008,(4)
[Objective] Study on the genetic diversity in main cultivars of safflower distributing in Xinjiang Uighur Autonomous Region by means of RAPD makers.[Method] Genomic DNAs of 29 safflower accessions from Xinjiang Uighur Autonomous Region were extracted for PCR amplification using 20 RAPD primers.[Result] Totally 156 bands were amplified,among which 144 bands were polymorphic(accounting for 92.31%),indicating that safflower is endowed with plentiful genetic diversity.Based on the DNA fingerprint,the 29 safflower accessions were grouped into four populations,the classification results may be not related with ecological regionality.[Conclusion] RAPD technique is an available tool to analyze the genetic diversity of safflower germplasm at molecular level. 相似文献
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Genetic Diversity in Main Cultivars of Safflower in Xinjiang Uighur Autonomous Region Based on RAPD Analysis 总被引:3,自引:0,他引:3
YUE Qing-ni GE Juan WANG Lei ZHANG Xia WANG Shao-ming WANG Jian-ming College of Life Sciences Shihezi University Shihezi 《(《农业科学与技术》)编辑部》2008,(4)
[Objective] Study on the genetic diversity in main cultivars of safflower distributing in Xinjiang Uighur Autonomous Region by means of RAPD makers.[Method] Genomic DNAs of 29 safflower accessions from Xinjiang Uighur Autonomous Region were extracted for PCR amplification using 20 RAPD primers.[Result] Totally 156 bands were amplified,among which 144 bands were polymorphic(accounting for 92.31%),indicating that safflower is endowed with plentiful genetic diversity.Based on the DNA fingerprint,the 29 safflower accessions were grouped into four populations,the classification results may be not related with ecological regionality.[Conclusion] RAPD technique is an available tool to analyze the genetic diversity of safflower germplasm at molecular level. 相似文献