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1.
水稻DH群体的分子连锁图谱及基因组分析 总被引:13,自引:0,他引:13
利用扩大的籼粳杂交来源(窄叶青8号×京系17)的水稻(OryzasativaL.)加倍单倍体(DH)群体,构建了包含444个位点的分子连锁图谱,覆盖水稻基因组1962cM(centiMorgon),标记间的平均图距小于5cM。此图谱包括276个RFLP标记、34个RAPD标记、89个微卫星标记、10个AFLP标记、26个端粒重复相关序列(TAS)标记以及9个同工酶标记。该遗传图谱与其它的水稻高密度遗传图谱具有较高的可比性,并有自己的特点,适于进行各种持续性的遗传学研究 相似文献
2.
斜茎黄芪根瘤菌的16S rDNA和23S rDNA PCR-RFLP比较分析 总被引:2,自引:0,他引:2
在表型性状数值分析和AFLP指纹图谱分析的基础上,选取54株斜茎黄芪根瘤菌的代表菌株及已知根瘤菌参比菌株,进行16SrDNA和23SrDNA的PCR-RFLP比较分析。结果表明斜茎黄芪根瘤菌具有极大的系统发育多样性,分别具有24个16SrDNA遗传图谱类型和22个23SrDNA遗传图谱类型,16SrDNA与23SrDNAPCR-RFLP聚类分析树状图谱有较好的一致性,但也存在一些差异。在对较大类群的划分上,它们的结果与表型性状数值分析结果有较好的一致性。将16SrDNA和23SrDNAPCR-RFLP分析 相似文献
3.
在表型性状数值分析和AFLP指纹图谱分析的基础上,选取54株斜茎黄芪根瘤菌的代表菌株及已知根瘤菌参比菌株,进行16SrDNA和23SrDNA的PCR-RFLP比较分析。结果表明斜茎黄芪根瘤菌具有极大的系统发育多样性,分别具有24个16SrDNA遗传图谱类型和22个23SrDNA遗传图谱类型,16SrDNA与23SrDNAPCR-RFLP聚类分析树状图谱有较好的一致性,但也存在一些差异。在对较大类群的划分上,它们的结果与表型性状数值分析结果有较好的一致性。将16SrDNA和23SrDNAPCR-RFLP分析数据合并在一起进行分析时,得出26个综合遗传图谱类型和1个综合聚类分析树状图谱。很明显,16SrDNA与23SrDNA的合并,能够得出更可靠的系统发育结论。 相似文献
4.
利用RFLP,SSR,AFLP和RAPD标记分析玉米自效系遗传多样性的比较研究 总被引:45,自引:0,他引:45
利用RFLP、SSR、AFLP和RAPD4种分子标记方法研究了15个玉米(Zea mays L.)自交系的遗传多样性,同时对4种标记系统进行比较。在供试材料中筛选到具多态性的RFLP探针酶组合56个,676对SSR引物,20个RAPD引物和9个AFLP引物组合,分别检测到多态性带167、201、87和108条。SSR标记位点的平均多态性检测效率(Ai,32.2)。4种分子标记所得遗传相似自交系划分 相似文献
5.
利用RFLP、SSR、AFLP和RAPD标记分析玉米自交系遗传多样性的比较研究 总被引:115,自引:3,他引:112
利用 RFLP、SSR.AFLP和RAPD 4种分子标记方法研究了 15个玉米(Zea mays L.)自交系的遗传多样性,同时对4种标记系统进行比较。在供试材料中筛选到具多态性的RFLP探针酶组合56个,66对SSR引物,20个RAPD引物和9个AFLP引物组合,分别检测到多态性带167、201、87和108条。SSR标记位点的平均多态性信息量(PIC)最大(0.54),AFLP标记位点最小(0.36),但AFLP标记具有最高的多态性检测效率(Ai,32.2)。4种分子标记所得遗传相似系数相关性显著,比较相关系数表明 RAPD可靠性较低。依据 4种分子标记结果将 15个供试自交系划分为塘四平头、旅大红骨、兰卡斯特、瑞德和PN共5个类群,与系谱分析基本一致。认为SSR和RFLP两种分子标记方法适合进行玉米种质遗传多样性的研究。 相似文献
6.
AFLP分子标记及其应用(综述) 总被引:12,自引:0,他引:12
本文简述AFLP分子标记的原理、方法与特点,并综述其在植物遗传多态性及系统发育学研究、基因定位及高密度遗传图谱(或物理图谱)构建和品种鉴定及抗性育种特性性状的分子标记中的应用现状和前景。 相似文献
7.
本文简述AFLP分子标记的原理、方法与特点,并综述其在植物遗传多态性及系统发育学研究、基因定位及高密度遗传图谱(或物理图谱)构建和品种鉴定及抗性育种特征性状的分子标记中的应用现状和前景。 相似文献
8.
水稻的AFLP研究初报——反应条件的优化及对温敏核不育等位突变系的分析 总被引:4,自引:0,他引:4
通过对5460S和5460F这一对水稻等位突变系的AFLP分析,比较了AFLP与RAPD及RFLP检测DNA多态性的相对效率。结果表明,这3种分子标记的DNA多态性检出效率依次为AFLP>RAPD>RFLP;找出了水稻AFLP分析的最适反应条件;在这对等位突变系之间找到了一些多态性AFLP产物,已完成了对4个多态性AFLP产物的克隆,其中3个为单拷贝顺序;用这3个单拷贝克隆的混合物为探针,对作者自己构建的5460S水稻的BAC库进行了筛选,获得了12个阳性克隆,为今后BAC库的筛选打下了基础。此外,对上述3种分子标记各自的优缺点及它们在DNA多态性检测中的适用之处进行了分析探讨。 相似文献
9.
10.
微卫星DNA和AFLP标记在水稻分子标记连锁图上的分布 总被引:31,自引:0,他引:31
以一个栽培稻(OryzasativaL.sp.indica)和野生稻(O.rufipogonGrif)杂交的F2作图群体以及由该群体构建的RFLP标记连锁图,分析了微卫星DNA和AFLP标记的多态性、遗传行为及其在染色体上的分布。共定位了28个微卫星DNA标记和172个AFLP标记。28个微卫星DNA标记中有6个为华中农业大学作物遗传改良国家重点实验室根据数据库中序列而设计,其余22个来自美国Cornel大学已发表的结果。172个AFLP标记出自25对引物扩增得到的228个多态性带的片段。这些标记分布于水稻的12条染色体。将此200个PCR标记与华中农业大学作物遗传改良国家重点实验室构建的RFLP连锁图整合,得到一张含612个分子标记位点的遗传连锁图。 相似文献
11.
An informative linkage map of soybean reveals QTLs for flowering time, leaflet morphology and regions of segregation distortion. 总被引:15,自引:0,他引:15
N Yamanaka S Ninomiya M Hoshi Y Tsubokura M Yano Y Nagamura T Sasaki K Harada 《DNA research》2001,8(2):61-72
A genetic linkage map covering a large region of the genome with informative markers is essential for plant genome analysis, including identification of quantitative trait loci (QTLs), map-based cloning, and construction of a physical map. We constructed a soybean genetic linkage map using 190 F2 plants derived from a single cross between the soybean varieties Misuzudaizu and Moshidou Gong 503, based on restriction-fragment-length polymorphisms (RFLPs) and simple-sequence-repeat polymorphisms (SSRPs). This linkage map has 503 markers, including 189 RFLP markers derived from expressed sequence tag (EST) clones, and consists of 20 major linkage groups that may correspond to the 20 pairs of soybean chromosomes, covering 2908.7 cM of the soybean genome in the Kosambi function. Using this linkage map, we identified 4 QTLs--FT1, FT2, FT3, and FT4--for flowering time, the QTLs for the 5 largest principal components determining leaflet shape, 6 QTLs for single leaflet area, and 18 regions of segregation distortion. All 503 analyzed markers identified were located on the map, and almost all phenotypic variations in flowering time were explained by the detected QTLs. These results indicate that this map covers a large region of the soybean genome. 相似文献
12.
A detailed genetic linkage map of Brassica rapa has been constructed containing 545 sequence-tagged loci covering 1287 cM, with an average mapping interval of 2.4 cM. The loci were identified using a combination of 520 RFLP and 25 PCR-based markers. RFLP probes were derived from 359 B. rapa EST clones and amplification products of 11 B. rapa and 26 Arabidopsis. Including 21 SSR markers provided anchors to previously published linkage maps for B. rapa and B. napus and is followed as the referenced mapping of R1-R10. The sequence-tagged markers allowed interpretation of the pattern of chromosome duplications within the B. rapa genome and comparison with Arabidopsis. A total of 62 EST markers showing a single RFLP band were mapped through 10 linkage groups, indicating that these can be valuable anchoring markers for chromosome-based genome sequencing of B. rapa. Other RFLP probes gave rise to 2-5 loci, inferring that B. rapa genome duplication is a general phenomenon through 10 chromosomes. The map includes five loci of FLC paralogues, which represent the previously reported BrFLC-1, -2, -3, and -5 and additionally identified BrFLC3 paralogues derived from local segmental duplication on R3. 相似文献
13.
A linkage map of hexaploid oat based on grass anchor DNA clones and its relationship to other oat maps. 总被引:3,自引:0,他引:3
A cultivated oat linkage map was developed using a recombinant inbred population of 136 F6:7 lines from the cross 'Ogle' x 'TAM O-301'. A total of 441 marker loci, including 355 restriction fragment length polymorphism (RFLP) markers, 40 amplified fragment length polymorphisms (AFLPs), 22 random amplified polymorphic DNAs (RAPDs), 7 sequence-tagged sites (STSs), 1 simple sequence repeat (SSR), 12 isozyme loci, and 4 discrete morphological traits, was mapped. Fifteen loci remained unlinked, and 426 loci produced 34 linkage groups (with 2-43 loci each) spanning 2049 cM of the oat genome (from 4.2 to 174.0 cM per group). Comparisons with other Avena maps revealed 35 genome regions syntenic between hexaploid maps and 16-34 regions conserved between diploid and hexaploid maps. Those portions of hexaploid oat maps that could be compared were completely conserved. Considerable conservation of diploid genome regions on the hexaploid map also was observed (89-95%); however, at the whole-chromosome level, colinearity was much lower. Comparisons among linkage groups, both within and among Avena mapping populations, revealed several putative homoeologous linkage group sets as well as some linkage groups composed of segments from different homoeologous groups. The relationships between many Avena linkage groups remain uncertain, however, due to incomplete coverage by comparative markers and to complications introduced by genomic duplications and rearrangements. 相似文献
14.
Ulloa M Meredith WR Shappley ZW Kahler AL 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》2002,104(2-3):200-208
An RFLP genetic linkage joinmap was constructed from four different mapping populations of cotton (Gossypium hirsutum L.). Genetic maps from two of the four populations have been previously reported. The third genetic map was constructed from
199 bulk-sampled plots of an F2.3 (HQ95–6×’MD51ne’) population. The map comprises 83 loci mapped to 24 linkage groups with an average distance between markers
of 10.0 centiMorgan (cM), covering 830.1 cM or approximately 18% of the genome. The fourth genetic map was developed from
155 bulk-sampled plots of an F2.3 (119– 5 sub-okra×’MD51ne’) population. This map comprises 56 loci mapped to 16 linkage groups with an average distance between
markers of 9.3 cM, covering 520.4 cM or approximately 11% of the cotton genome. A core of 104 cDNA probes was shared between
populations, yielding 111 RFLP loci. The constructed genetic linkage joinmap from the above four populations comprises 284
loci mapped to 47 linkage groups with the average distance between markers of 5.3 cM, covering 1,502.6 cM or approximately
31% of the total recombinational length of the cotton genome. The linkage groups contained from 2 to 54 loci each and ranged
in distance from 1.0 to 142.6 cM. The joinmap provided further knowledge of competitive chromosome arrangement, parental relationships,
gene order, and increased the potential to map genes for the improvement of the cotton crop. This is the first genetic linkage
joinmap assembled in G. hirsutum with a core of RFLP markers assayed on different genetic backgrounds of cotton populations (Acala, Delta, and Texas plain).
Research is ongoing for the identification of quantitative trait loci for agronomic, physiological and fiber quality traits
on these maps, and the identification of RFLP loci lineage for G. hirsutum from its diploid progenitors (the A and D genomes).
Received: 23 February 2001 / Accepted: 8 June 2001 相似文献
15.
Analysis of a Detailed Genetic Linkage Map of Lactuca Sativa (Lettuce) Constructed from RFLP and Rapd Markers 总被引:5,自引:0,他引:5 下载免费PDF全文
A detailed genetic map has been constructed from the F(2) population of a single intraspecific cross of Lactuca sativa (n = 9). It comprises 319 loci, including 152 restriction fragment length polymorphism (RFLP), 130 random amplified polymorphic DNA (RAPD), 7 isozyme, 19 disease resistance, and 11 morphological markers. Thirteen major, four minor linkage groups and several unlinked markers are identified for this genome which is estimated to be approximately 1950 cM. RFLP and RAPD markers show similar distributions throughout the genome and identified similar levels of polymorphism. RAPD loci were much quicker to identify but more difficult to order. Procedures for generating accurate genetic maps and their limitations are described. 相似文献
16.
An Integrated High-density Linkage Map of Soybean with RFLP, SSR, STS, and AFLP Markers Using A Single F2 Population 总被引:3,自引:0,他引:3
Xia Zhengjun; Tsubokura Yasutaka; Hoshi Masako; Hanawa Masayoshi; Yano Chizuru; Okamura Kayo; Ahmed Talaat A.; Anai Toyoaki; Watanabe Satoshi; Hayashi Masaki; Kawai Takashi; Hossain Khwaja G.; Masaki Hirokazu; Asai Kazumi; Yamanaka Naoki; Kubo Nakao; Kadowaki Koh-ichi; Nagamura Yoshiaki; Yano Masahiro; Sasaki Takuji; Harada Kyuya 《DNA research》2007,14(6):257-269
Soybean [Glycine max (L.) Merrill] is the most important leguminouscrop in the world due to its high contents of high-quality proteinand oil for human and animal consumption as well as for industrialuses. An accurate and saturated genetic linkage map of soybeanis an essential tool for studies on modern soybean genomics.In order to update the linkage map of a F2 population derivedfrom a cross between Misuzudaizu and Moshidou Gong 503 and tomake it more informative and useful to the soybean genome researchcommunity, a total of 318 AFLP, 121 SSR, 108 RFLP, and 126 STSmarkers were newly developed and integrated into the frameworkof the previously described linkage map. The updated geneticmap is composed of 509 RFLP, 318 SSR, 318 AFLP, 97 AFLP-derivedSTS, 29 BAC-end or EST-derived STS, 1 RAPD, and five morphologicalmarkers, covering a map distance of 3080 cM (Kosambi function)in 20 linkage groups (LGs). To our knowledge, this is presentlythe densest linkage map developed from a single F2 populationin soybean. The average intermarker distance was reduced to2.41 from 5.78 cM in the earlier version of the linkage map.Most SSR and RFLP markers were relatively evenly distributedamong different LGs in contrast to the moderately clusteredAFLP markers. The number of gaps of more than 25 cM was reducedto 6 from 19 in the earlier version of the linkage map. Thecoverage of the linkage map was extended since 17 markers weremapped beyond the distal ends of the previous linkage map. Inparticular, 17 markers were tagged in a 5.7 cM interval betweenCE47M5a and Satt100 on LG C2, where several important QTLs wereclustered. This newly updated soybean linkage map will enableto streamline positional cloning of agronomically importanttrait locus genes, and promote the development of physical maps,genome sequencing, and other genomic research activities. 相似文献
17.
Molecular-mapping analysis in Brassica napus using isozyme, RAPD and RFLP markers on a doubled-haploid progeny 总被引:4,自引:0,他引:4
N. Foisset R. Delourme P. Barret N. Hubert B. S. Landry M. Renard 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》1996,93(7):1017-1025
We have undertaken the construction of a Brassica napus genetic map with isozyme (4%), RFLP (26.5%) and RAPD (68%) markers on a 152 lines of a doubled-haploid population. The map covers 1765 cM and comprises 254 markers including three PCR-specific markers and a morphological marker. They are assembled into 19 linkage groups, covering approximatively 71% of the rapeseed genome. Thirty five percent of the studied markers did not segregate according to the expected Mendelian ratio and tended to cluster in eight specific linkage groups. In this paper, the structure of the genetic map is described and the existence of non-Mendelian segregations in linkage analysis as well as the origins of the observed distortions, are discussed. The mapped RFLP loci corresponded to the cDNAs already used to construct B. napus maps. The first results of intraspecific comparative mapping are presented. 相似文献
18.
R. Freyre P. W. Skroch V. Geffroy A.-F. Adam-Blondon A. Shirmohamadali W. C. Johnson V. Llaca R. O. Nodari P. A. Pereira S.-M. Tsai J. Tohme M. Dron J. Nienhuis C. E. Vallejos P. Gepts 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》1998,97(5-6):847-856
Three RFLP maps, as well as several RAPD maps have been developed in common bean (Phaseolus vulgaris L.). In order to align these maps, a core linkage map was established in the recombinant inbred population BAT93×Jalo EEP558
(BJ). This map has a total length of 1226 cM and comprises 563 markers, including some 120 RFLP and 430 RAPD markers, in addition
to a few isozyme and phenotypic marker loci. Among the RFLPs mapped were markers from the University of California, Davis
(established in the F2 of the BJ cross), University of Paris-Orsay, and University of Florida maps. These shared markers allowed us to establish
a correspondence between the linkage groups of these three RFLP linkage maps. In total, the general map location (i.e., the
linkage group membership and approximate location within linkage groups) has been determined for some 1070 markers. Approaches
to align this core map with other current or future maps are discussed.
Received: 10 March 1998 / Accepted: 22 April 1998 相似文献
19.
Singh K Ghai M Garg M Chhuneja P Kaur P Schnurbusch T Keller B Dhaliwal HS 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》2007,115(3):301-312
Diploid A genome species of wheat harbour immense variability for biotic stresses and productivity traits, and these could
be transferred efficiently to hexaploid wheat through marker assisted selection, provided the target genes are tagged at diploid
level first. Here we report an integrated molecular linkage map of A genome diploid wheat based on 93 recombinant inbred lines
(RILs) derived from Triticum boeoticum × Triticum monococcum inter sub-specific cross. The parental lines were analysed with 306 simple sequence repeat (SSR) and 194 RFLP markers, including
66 bin mapped ESTs. Out of 306 SSRs tested for polymorphism, 74 (24.2%) did not show amplification (null) in both the parents.
Overall, 171 (73.7%) of the 232 remaining SSR and 98 (50.5%) of the 194 RFLP markers were polymorphic. Both A and D genome
specific SSR markers showed similar transferability to A genome of diploid wheat species. The 176 polymorphic markers, that
were assayed on a set of 93 RILs, yielded 188 polymorphic loci and 177 of these as well as two additional morphological traits
mapped on seven linkage groups with a total map length of 1,262 cM, which is longer than most of the available A genome linkage
maps in diploid and hexaploid wheat. About 58 loci showed distorted segregation with majority of these mapping on chromosome
2Am. With a few exceptions, the position and order of the markers was similar to the ones in other maps of the wheat A genome.
Chromosome 1Am of T. monococcum and T. boeoticum showed a small paracentric inversion relative to the A genome of hexaploid wheat. The described linkage map could be useful
for gene tagging, marker assisted gene introgression from diploid into hexaploid wheat as well as for map based cloning of
genes from diploid A genome species and orthologous genes from hexaploid wheat. 相似文献
20.
A comparative linkage map of oilseed rape and its use for QTL analysis of seed oil and erucic acid content 总被引:26,自引:9,他引:17
Qiu D Morgan C Shi J Long Y Liu J Li R Zhuang X Wang Y Tan X Dietrich E Weihmann T Everett C Vanstraelen S Beckett P Fraser F Trick M Barnes S Wilmer J Schmidt R Li J Li D Meng J Bancroft I 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》2006,114(1):67-80
We have developed a new DH mapping population for oilseed rape, named TNDH, using genetically and phenotypically diverse parental lines. We used the population in the construction of a high stringency genetic linkage map, consisting of 277 loci, for use in quantitative genetic analysis. A proportion of the markers had been used previously in the construction of linkage maps for Brassica species, thus permitting the alignment of maps. The map includes 68 newly developed Sequence Tagged Site (STS) markers targeted to the homologues of defined genes of A. thaliana. The use of these markers permits the alignment of our linkage map with the A. thaliana genome sequence. An additional 74 loci (31 newly developed STS markers and 43 loci defined by SSR and RFLP markers that had previously been used in published linkage maps) were added to the map. These markers increased the resolution of alignment of the newly constructed linkage map with existing Brassica linkage maps and the A. thaliana genome sequence. We conducted field trials with the TNDH population at two sites, and over 2 years, and identified reproducible QTL for seed oil content and erucic acid content. The results provide new insights into the genetic control of seed oil and erucic acid content in oilseed rape, and demonstrate the utility of the linkage map and population.Electronic supplementary material Supplementary material is available in the online version of this article at and is accessible for authorized users.D. Qiu and C. Morgan authors contributed equally to the work. 相似文献