共查询到20条相似文献，搜索用时 31 毫秒
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水稻印尼水田谷型细胞质雄性不育恢复系R68的恢复基因初步定位 总被引：3，自引：0，他引：3
用印尼水田谷型不育系中9A和恢复系R68配组,选取F2的高可育株和极端不育株构建2个基因池,用82个完全不育单株作为定位群体,利用分布于12条染色体的413对SSR引物对双亲和两池进行多态性分析。 位于第1染色体的RM283和位于第10染色体的RM5756、RM258、RM6100、RM171 在亲本、两池间存在多态性,用F2单株验证证明它们与恢复基因连锁。经典遗传分析和分子标记定位研究表明,印尼水田谷型细胞质雄性不育恢复系R68具有2对恢复基因,分别位于第1和第10染色体上。位于第1染色体的恢复基因与分子标记RM283的距离是6.7 cM,位于第10染色体的恢复基因与标记RM5756、RM258、RM6100和RM171间的距离分别是10.4、8.0、2.4和4.2 cM。 相似文献
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LI Jin-bo XIA Ming-yuan WAN Bing-liang DU Xue-shu ZHA Zhong-ping YU Da-zhao QI Hua-xiong 《水稻科学》2009,16(1):79-82
A mutant with twisted hulls was found in a breeding population of rice (Oryza sativa L.). The mutant shows less grain weight and inferior grain quality in addition to twisted hulls. Genetic analysis indicated that the phenotype of mutant was controlled by a single recessive gene (temporarily designated as TWH). To map the TWH gene, an F2 population was generated by crossing the twh mutant to R725, an indica rice variety with normal hulls. For bulked segregant analysis, the bulk of mutant plants was prepared by mixing equal amount of plant tissue from 10 twisted-hull plants and the bulk of normal plants was obtained by pooling equal amount tissue of 10 normal-hull plants. Two hundred and seven pairs of simple sequence repeat (SSR) primers, which are distributed on 12 rice chromosomes, were used for polymorphism analysis of the parents and the two bulks. The TWH locus was initially mapped close to the SSR marker RM526 on chromosome 2. Therefore, further mapping was performed using 50 pairs of SSR primers around the marker RM526. The TWH was delimited between the SSR markers RM14128 and RM208 on the long arm of chromosome 2 at the genetic distances of 1.4 cM and 2.7 cM, respectively. These results provide the foundation for further fine mapping, cloning and functional analysis of the TWH gene. 相似文献
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四川省主要杂交稻亲本的SSR多态性分析和指纹图谱的构建与应用 总被引：54，自引：6，他引：54
利用微卫星标记对四川省主推杂交水稻品种进行了DNA指纹图谱构建和品种鉴定研究。208对引物中具有多态性的引物共123对,占所用引物的59.13%。不同染色体的微卫星分析的多态性不同,第9、10染色体微卫星的多态性高于其他染色体,第12染色体上的微卫星标记的多态性最差,仅为46.15%。42份常用杂交水稻亲本材料聚类分析表明,恢复系和不育系的遗传基础均较狭窄,但恢复系和不育系之间的遗传距离相对较远,从一定程度上反映了遗传距离与杂种优势的正相关。筛选出的各个亲本材料的特异引物或引物组合,能够将某个亲本材料与其他材料相区分。利用这些SSR引物建立了四川省主要杂交水稻亲本的DNA指纹数据库,可以有效地解决杂交水稻及其杂交种的鉴定问题,以及有效地分析各材料间的亲缘关系。从DNA指纹数据库中筛选出D优527的特异引物RM337、RM244和RM346,可以鉴定出D优527中的纯度,与田间鉴定结果一致;在真伪性鉴定中将同一不育系配组的D优527和D优68区分开,说明微卫星鉴定结果是准确可靠的,可用于品种权保护和品种真伪性及纯度鉴定。 相似文献
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应用微卫星标记定位水稻恢复系密阳46的主效和微效恢复基因 总被引：8，自引：1，他引：7
应用由704个株系组成的珍汕97A/(珍汕97B/密阳46)F6测交群体,针对水稻第10染色体和第1、11染色体短臂构建了微卫星标记连锁图谱,检测到控制野败型细胞质雄性不育育性恢复的4个QTL,其中位于第10染色体长臂中下部的Rf4具有主效效应,位于第1染色体短臂的Rf3具有较大效应,位于第10染色体长臂近着丝粒处的qRf10和第11染色体短臂近着丝粒处的qRf11表现出微效作用。研究还表明,在主效基因Rf4存在时,其他3个基因仍具有提高结实率的作用,但在Rf3和Rf4同时存在时,qRf10和qRf11的效应不明显。 相似文献
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小麦籽粒特性与籽粒产量和品质密切相关。本研究以波兰小麦(Tiriticum polonicum L.)×普通小麦(Triticum aestivum L.)品系"中13"杂交组合衍生的99个F8重组自交系(Recombinant inbred lines,RIL)群体为材料,利用SSR分子标记构建连锁遗传图谱。根据两年实验数据,利用复合区间作图法对粒重、粒长和粒宽3个籽粒特性相关性状进行了QTL定位分析,共检测到12个与籽粒特性相关的加性QTL位点。其中,3个粒重QTL,1个位于1A染色体上,另外2个都在2A染色体上,单个QTL可解释表型变异的13.35%～20.04%;5个粒长QTL,其中2个位于2A染色体上,其余3个分别位于3A、5A和2B染色体上,单个QTL可解释表型变异的8.53%～21.03%;4个粒宽QTL,分别位于1A、2A、3B和5B染色体上,单个QTL可解释表型变异的9.76%～40.79%。在2A染色体上共检测到5个籽粒特性相关性状的QTL,表明2A染色体与籽粒特性关系密切。 相似文献
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El-Namaky Raafat Sedeek Saber Dea Moukoumbi Yonnelle Ortiz Rodomiro Manneh Baboucarr 《水稻科学》2016,23(3):160
DNA markers enabled to determine the chromosomal locations of the two Rf genes(Rf3 and Rf4) in the wild-abortive cytoplasmic male sterility(WA-CMS) system. Four simple sequence repeats(SSRs) RM171, RM258, RM315 and RM443 were used to detect the allelic status with respect to the fertility restoration genes(Rf3 and Rf4) in 300 rice cultivars or breeding lines. The results revealed that out of 300 lines, 90 lines screened had Rf3, 65 lines had Rf4, and 45 lines had Rf3 and Rf4 alleles. Furthermore, 45 lines selected using SSR markers were mated with a CMS line(IR58025A) to analyze their restoring ability. Offspring of all the test lines except HHZ8-SAL9DT1-Y1, HHZ5-SAL9-Y3-1 and IDSA77 exhibited higher pollen and spikelet fertility( 80%), thus confirming they bear the Rf alleles. The hybrid offspring of ARH12-6-1-1-B-3-1, IR32307-10-3-2-1 and Sahel 329 had the highest pollen fertility(97.39%, 98.30% and 97.10%, respectively) and spikelet fertility(95.10%, 97.07% and 96.10%, respectively). 相似文献
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SHEY Shi-quan ZENG Ya-wen LI Shen-chong WEN Guo-song Pu Xiao-ying 《水稻科学》2005,12(3):163-167
Genetic analysis showed that cold tolerance at booting stage of near-isogenic lines （NILs） of Kunmingxiaobaigu was controlled by a gene with large phenotypic variance. One hundred and sixty-four simple sequence repeats （SSR） distributed over 12 chromosomes were used to screen polymorphism between Towata （recurrent parent, RP） and near-isogenic line pool （NILP）, and two SSR markers at the long arm of chromosome 5 showed polymorphism in comparison with RP genome. Of the two markers, RM31 was found possibly linked with the cold tolerance gene at booting stage through one-way ANOVA. Twelve SSR markers around RM31 were then used to detect polymorphism between RP and NIL, and only RM7452 had polymorphism. The gene of cold tolerance at booting stage was further mapped on chromosome 5 between RM7452 and RM31 with genetic distances of 4.8 cM and 8.0 cM, respectively. This gene explained 10.50% of phenotypic variance and 5.10% of phenotypic variance of fully filled grains, and was tentatively designated as Ctb（t）. 相似文献
9.
应用籼稻组合珍汕97B/密阳46的衍生材料,针对水稻第6染色体短臂色素原基因C的可能位置,筛选到在C基因周围区间呈不同基因型组合的7个剩余杂合体,收获种子建立F2∶3群体。在各个植株上,稃尖颜色和叶鞘颜色的表现完全相同。通过各个群体颜色表现与原剩余杂合体基因型的比较,将C基因定位于微卫星标记RM314与RM253之间。在该基础上,应用两个分离群体共1279个样本,经标记检测和连锁分析,进一步将C基因定位于RM111和RM253之间, 与RM111和RM253的遗传距离分别为0.7 cM和0.4 cM。最后,应用区间内的另外6个微卫星标记和1个源于C基因候选基因OsC1的标记,检测在RM111 C基因 RM253区间内发生了重组的22个个体,将C基因定位于一个大小为59.3 kb、涵盖C基因候选基因OsC1座位的区间中。 相似文献
10.
我国主要杂交水稻组合及其亲本SSR标记和纯度鉴定 总被引：88，自引：6，他引：88
选用分布于水稻12条染色体上的26对SSR引物对我国9个主要的杂交水稻组合及其亲本进行了SSR标记分析,21对多态性引物共扩增出62条条带,平均2.95条,能够有效地区分所有恢复系和大部分不育系。杂交种条带均为父母本的互补型,很适合做杂交种纯度鉴定。用引物RM17对杂交稻组合汕优63和两优培九进行了100粒单种子SSR鉴定,所测纯度分别为96.0%和98.0%,与田间纯度96.2%和97.7%非常接近,显示出SSR技术在品种认证和纯度鉴定中有广阔的前景。 相似文献
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Seven residual heterozygous lines(RHLs)displaying different genotypic compositions in the genomic region covering probable locations of C (Chromogen for anthocyanin)gene on the short arm of rice chromosome 6 were selected from the progenies of the indica cross Zhenshan 97B/Milyang 46.Seeds were harvested from each of the seven plants,and the resultant F2:3 populations were used for fine mapping of C gene.It was shown in the populations that the apiculus coloration matched to basal leaf sheath coloration in each plant.By relating the coloration performances of the populations with the genotypic compositions of the RHLS,the C locus was located between rice SSR markers RM314 and RM253.By using a total of 1279 F2:3 individuals from two populations showing coloration segregation.the C locus was then located between RM111 and RM253,with genetic distances of 0.7 cM to RM111 and 0.4 cM to RM253.Twenty-two recombinants found in the two populations were assayed with seven more markers located between RM111 and RM253,including six SSR markers and one marker for the C gene candidate,OsC1.The C locus Was delimited to a 59.3-kb region in which OsC1 was located. 相似文献
13.
应用近等基因系初步定位粳稻孕穗期的耐冷基因 总被引：8，自引：1，他引：8
在昆明低温冷害条件下对十和田×(十和田5/昆明小白谷BC4F5)的BC5F2群体进行了耐冷性状的遗传研究。结果显示，穗期耐冷性受贡献率较大的基因控制。用平均分布于12条染色体的164个SSR标记对十和田、昆明小白谷、近等基因系池（NILP）进行筛选，在第5染色体长臂末端有2个SSR标记的扩增产物在十和田与昆明小白谷、NILP间有多态性。用这2个多态性标记对群体进行分子标记定位，单向方差分析表明RM31与耐冷基因连锁。再在RM31附近合成12个SSR标记在轮回亲本（RP）、近等基因系（NIL）间进行多态性筛选，只有RM7452有多态性, 单向方差分析表明该标记与耐冷基因连锁。耐冷基因与RM7452、RM31的遗传距离分别为4.8 cM和8.0 cM，主穗结实率能解释表型变异的10.50%；实粒数能解释表型变异的5.10%。暂将这个耐冷基因定名为Ctb(t)。 相似文献
14.
太湖流域粳稻地方品种黑壳子粳抗稻瘟病基因的分子定位 总被引：4，自引：2，他引：2
以广谱、高抗稻瘟病的太湖流域粳稻地方品种黑壳子粳与感病品种苏御糯杂交,产生F1、F2、F2∶3及F5∶6重组自交系群体,用日本稻瘟病鉴别菌系北1接种鉴定。黑壳子粳对北1的抗性是由1对显性主效基因控制的,定名为Pi hk1(t) 。根据不同杂交世代群体对北1的抗、感反应,结合SSR分子标记,将黑壳子粳中的Pi hk1(t) 基因定位在水稻第11染色体长臂末端,与RM7654和RM27381两个标记的遗传距离分别为0.9 cM和1.6 cM。 相似文献
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HUANG Ting-you WANG Zhi HU Yun-gao SHI Shou-pei PENG Tao CHU Xu-dong SHI Jun XIANG Zu-fen LIU Ding-you 《水稻科学》2008,15(2):153-156
To understand the genetic characteristics of a new photoperiod-sensitive genic male sterile line Mian 9S,some reciprocal crosses were made between Mian 9S and six indica rice materials,Yangdao 6,Luhui 602,Shuihui 527,Mianhui 725,Fuhui 838 and Yixiang 1B.Genetic analysis results suggested that the photoperiod-sensitive genic male sterility (PGMS) of Mian 9S was controlled by a single recessive nuclear gene.Thus,the F2 population derived from the cross of Yangdao 6/Mian 9S was used to map the PGMS gene in Mian 9S.By using SSR markers,the PGMS gene of Mian 9S was mapped on one side of the markers,RM6659 and RM1305,on rice chromosome 4,with the genetic distances of 3.0 cM and 3.5 cM,respectively.The gene was a novel PGMS gene and designated tentatively as pros4.In addition,the application of the pros4 gene was discussed. 相似文献
16.
应用SSR分子标记鉴定超级杂交水稻组合及其纯度 总被引：38，自引：4，他引：38
应用SSR分子标记技术对超级杂交稻5个组合（HYS 1/R105、培矮64S/E32、两优培九、88S/0293、J23A/Q611）及其9个亲本进行了鉴定。用144对SSR引物进行筛选，有47对能够在实验材料中显示较好的多态性，其中，RM337与RM154呈现丰富多态性，可鉴别供试组合并分别与其亲本区分开。对于水稻的每一条染色体，各筛选出两条产生多态性的引物，共24对，并提供一组作为鉴定参考的图谱；通过杂种表现为父母本互补带型的特点，找到在杂交稻组合及其亲本间具有多态性的引物，筛选出5对引物分别作为鉴定上述5个超级杂交稻组合的特异引物，进而针对杂交稻不同的纯度问题设计鉴定方法。 相似文献
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粳稻野败型细胞质雄性不育恢复系SWR78的恢复基因定位 总被引：1，自引：0，他引：1
利用野败(WA)型粳稻广亲和不育系苏秋A和广亲和广谱型恢复系SWR78配组,根据F2与BC1F1群体的育性分离情况,初步推测WA型苏秋A的育性恢复至少由3对基因控制。选取F2群体中无染色花粉植株,采用隐性基因组分析法进行恢复基因定位,将其中1个主效基因Rf4定位于第10染色体长臂上,与标记RM5629、RM5373、STS10 17和STS10 18分别相距0.17、0.03、0.03和0.07 cM。Rf4位于标记RM5373与STS10 17之间,两标记间的物理距离为78 kb。 相似文献
18.
Fine Mapping of C（Chromogen for Anthocyanin） Gene in Rice 总被引：1，自引：1，他引：0
FAN Fang-jun FAN Ye-yang Du Jing-hong ZHUANG Jie-yun 《水稻科学》2008,15(1):1-6
Seven residual heterozygous lines (RHLs) displaying different genotypic compositions in the genomic region covering probable locations of C (Chromogen for anthocyanin) gene on the short arm of rice chromosome 6 were selected from the progenies of the indica cross Zhenshan 97B/Milyang 46. Seeds were harvested from each of the seven plants, and the resultant F2:3 populations were used for fine mapping of C gene. It was shown in the populations that the apiculus coloration matched to basal leaf sheath coloration in each plant. By relating the coloration performances of the populations with the genotypic compositions of the RHLs, the C locus was located between rice SSR markers RM314 and RM253. By using a total of 1279 F2:3 individuals from two populations showing coloration segregation, the C locus was then located between RM111 and RM253, with genetic distances of 0.7 cM to RM111 and 0.4 cM to RM253. Twenty-two recombinants found in the two populations were assayed with seven more markers located between RM111 and RM253, including six SSR markers and one marker for the C gene candidate, OsC1. The C locus was delimited to a 59.3-kb region in which OsC1 was located. 相似文献
19.
XIONG Tao NIE Yuanyuan MAO Fangming LEI Jianguo MAO Linghua ZHU Shan HUANG Renliang SHEN Xianhua YAN Song 《中国水稻科学》1986,34(6):520-524
【Objective】In the process of breeding DW-type three-line hybrid rice, cross incompatibility (CI) was found when the cytoplasmic male sterile (CMS) lines were crossed/backcrossed with some varieties. We focused on the trait to lay a theoretical basis for improving CI of DW-type CMS lines, so as to promote the application of DW-type three-line. 【Method】With isocytoplasm allonuclear materials of DW-type and isonuclear alloplasmic male sterile lines of WA-type as female parents, maintainer lines as male parents, cross experiments were carried out to investigate the cause of CI. Genetic analysis and gene rough mapping were conducted using a set of chromosome single segment substitution lines, which were crossed to a DW-type CMS line DY1A, respectively. 【Result】The CI was caused by nuclear-cytoplasmic interactions. Two types of CI were observed that the first type occurred in F0 crosses and another after backcrossing. For the first type, primarily genetic analysis showed that the CI was controlled by a recessive gene in the nucleus, temporarily named CI1(t), which was then mapped between the two markers RM6838 and RM5767, linked to RM3395, on chromosome 8. 【Conclusion】The CI of DW-type CMS lines could be improved by molecular methods. 相似文献
20.
具抗稻瘟病基因Pi25杂交稻恢复系的分子标记辅助选育 总被引：4，自引：0，他引：4
从组合中156/谷梅2号所衍生的重组自交系群体中选择携带抗稻瘟病基因Pi25的3个株系,分别与高产恢复系9308和3 11配组,通过单粒传法获得的6个F6重组自交系群体用于研究。在Pi25先前定位的遗传图谱上,新增加与该基因紧密连锁的分子标记RM3330和A7,并结合RM3330和A7分子标记辅助选择的结果,共筛选到了109个Pi25基因纯合的株系。用现有的与恢复基因连锁的标记对这109个株系进行二次筛选,最终获得20个Pi25基因和恢复基因均纯合的株系。对育性恢复力鉴定试验表明,选育出的抗病恢复系具有较好的恢复能力,并已应用于育种实践;人工稻瘟病接种试验证实,所用标记不同,分子标记辅助选择的效率差异显著,单个标记辅助选择符合率均不高,而采用目标基因两侧连锁的标记同时进行辅助选择,则可以明显提高分子标记辅助选择符合率。 相似文献