共查询到19条相似文献，搜索用时 187 毫秒
1.
【目的】对抗条锈病新种质三属麦1号进行抗条锈病鉴定和遗传分析,明确三属麦1号含有的抗病基因数目,并挖掘其抗条锈病基因。【方法】利用CYR29、CYR30、CYR31、CYR32、CYR33 5个条锈菌优势小种对三属麦1号与铭贤169(感病品种)及二者作为亲本杂交的F1、F2代和BC1代进行了抗锈性遗传分析,并对其抗条锈基因进行微卫星标记。【结果】三属麦1号对供试的5个条锈菌优势小种均表现免疫,并且对条锈菌小种CYR31的抗性由1对隐性基因控制,暂命名为YrS1。采用分子标记定位技术,筛选到位于小麦3D染色体短臂上的5个SSR标记(Xwmc674、Xcfd79、Xcfd34、Xgwm2、Xbarc68)与YrS1连锁,最近的标记为Xwmc674和Xcfd79,其与YrS1的遗传距离分别是8.7和4.1cM。【结论】三属麦1号具有优良的抗条锈性,而且具有5个多态性微卫星标记的抗条锈病基因YrS1位于小麦3D染色体短臂上。 相似文献
2.
小麦品种中梁16的抗条锈性研究 总被引：1，自引：0，他引：1
小麦条锈病是小麦生产上最严重的世界性病害之一。小麦品种中梁16具有抗逆性强、高产、抗条锈性强等优良特性。为明确其抗条锈性遗传规律,利用条锈菌小种CYR30对中梁16与感病品种铭贤169及其杂交后代进行苗期抗条锈性遗传分析。结果表明,中梁16对CYR30小种具有良好的抗性,由1对显性基因控制,暂命名为Yr Zhong16。通过分子标记分析,获得了与Yr Zhong16连锁的4个SSR标记Xwmc696、Xgwm644、Xbarc95和Xgwm131。其中与Yr Zhong16最近的侧翼位点为Xgwm644和Xbarc95,其遗传距离分别是2.3和3.5 c M。根据SSR标记的定位结果,将Yr Zhong16定位在小麦染色体7BL上。这些与Yr Zhong16连锁的分子标记为利用中梁16抗条锈病基因进行抗病基因聚合和分子标记辅助育种奠定了基础。 相似文献
3.
普通小麦-簇毛麦易位系V8360具有抗逆性强、抗条锈性强和抗白粉性强等许多优良的生物学特性。用9个中国目前流行的条锈菌生理小种对V8360进行了抗条锈性评价,表明该易位系具有良好的抗条锈性。以条锈菌小种CYR32对V8360与感病品种铭贤169配置的F1、F2、F3和BC1代进行苗期抗条锈性遗传分析,并对其中一个F2代群体进行了SSR标记。结果表明,V8360对条锈菌CYR32的抗病性由1对显性核基因控制,暂命名为Yr V8360。从329对SSR引物中筛选到位于小麦4AL染色体上的4个SSR位点Xwmc161、Xgwm565、Xgwm494和Xcfd257与该基因连锁。 相似文献
4.
【目的】研究小偃54抗条锈性的遗传规律,为小麦抗条锈病基因的利用奠定基础。【方法】在温室以小偃54和感病品种铭贤169的杂交后代F1、BC1、F2和F3群体为研究对象,采用我国目前小麦条锈菌流行小种Su-4、Su-11、CYR29、CYR30、CYR31、CYR32和CYR33 7个小种对供试群体进行温室苗期和成株期测试,并分析杂交后代抗病基因的遗传规律。【结果】在苗期和成株期,小偃54在常温(夜10℃/昼18℃)条件下对7个流行小种均表现感病,而在高温(夜18℃/昼25℃)条件下则表现出较好的抗条锈性;小偃54对CYR29的抗条锈基因由2对相互抑制的基因控制,对CYR30、CYR31和CYR32的抗条锈基因由2对隐性基因控制。【结论】小偃54是一个典型的高温抗条锈小麦品种,并明确了其对条锈菌流行小种表现高温抗病性的基因数、显隐性和遗传方式。 相似文献
5.
利用SSR标记技术对小麦农家品种和尚麦中的抗条锈病基因进行了分子标记筛选.在290对微卫星引物中,发现引物Xwmc216,Xgdm126,Xgwm153,Xbarc188和Xbarc81在抗亲、感亲和抗池、感池之间有差异.群体验证的结果表明,Xwmc216,Xgdm126,Xgwm153,Xbarc J88和Xbarc81与和尚麦中抗病基因连锁,基因和标记之间的顺序为着丝点-Xwmc216-YrHe-Xgdm126-Xgwm 153-Xbarc J88-Xbarc81,遗传距离依次为25.7,14.7,18.4,3.7和5.4 cM.根据SSR标记在染色体上的分布,将和尚麦中所含有的抗病基因定位于1B染色体长臂上.根据该基因在染色体上的位置与抗病谱分析,认为该基因可能是1个新的抗条锈基因.暂定名为yrHe. 相似文献
6.
【目的】小麦品系西农1163-4高抗小麦叶锈、条锈和白粉病,综合农艺性状良好。明确该小麦品系中所含的抗叶锈病基因及遗传特点,找到与其紧密连锁的分子标记,有利于抗病基因利用和培育抗病新品种。【方法】将西农1163-4与感病品种Thatcher杂交,获得F1、F2代群体,利用中国叶锈菌优势小种THTT进行苗期抗性鉴定和抗性遗传分析;采用SSR技术对西农1163-4所携带的抗叶锈基因进行分子标记研究,共筛选了1 273对SSR引物。【结果】小麦品系西农1163-4对多个叶锈菌小种具有良好的抗病性,对THTT的抗性是由1个显性基因控制,该基因暂命名为LrXi。获得了与LrXi紧密连锁的3个微卫星分子标记Xbarc8、Xgwm582、Xwmc269和1个STS标记(ω-secali/Glu-B3),将LrXi定位于小麦1BL染色体上。距离最近的2个微卫星位点是Xgwm582、Xbarc8,与抗叶锈基因间的遗传距离分别为2.3 cM和3.2 cM。【结论】LrXi位于1BL染色体,抗叶锈表现不同于所有已知抗叶锈病基因,该基因的发现将有利于丰富中国抗叶锈病基因资源,为培育持久抗病品种奠定基础。 相似文献
7.
小麦品系西农1163-4抗叶锈病基因的遗传分析和分子作图 总被引：2，自引：1，他引：1
【目的】小麦品系西农1163-4高抗小麦叶锈、条锈和白粉病,综合农艺性状良好。明确该小麦品系中所含的抗叶锈病基因及遗传特点,找到与其紧密连锁的分子标记,有利于抗病基因利用和培育抗病新品种。【方法】将西农1163-4与感病品种Thatcher杂交,获得F1、F2代群体,利用中国叶锈菌优势小种THTT进行苗期抗性鉴定和抗性遗传分析;采用SSR技术对西农1163-4所携带的抗叶锈基因进行分子标记研究,共筛选了1 273对SSR引物。【结果】小麦品系西农1163-4对多个叶锈菌小种具有良好的抗病性,对THTT的抗性是由1个显性基因控制,该基因暂命名为LrXi。获得了与LrXi紧密连锁的3个微卫星分子标记Xbarc8、Xgwm582、Xwmc269和1个STS标记(ω-secali/Glu-B3),将LrXi定位于小麦1BL染色体上。距离最近的2个微卫星位点是Xgwm582、Xbarc8,与抗叶锈基因间的遗传距离分别为2.3 cM和3.2 cM。【结论】LrXi位于1BL染色体,抗叶锈表现不同于所有已知抗叶锈病基因,该基因的发现将有利于丰富中国抗叶锈病基因资源,为培育持久抗病品种奠定基础。 相似文献
8.
【目的】明确中国小麦条锈菌重要鉴别寄主维尔的抗条锈病基因及其遗传特点,建立与其连锁的微卫星标记,将病菌小种监测和抗病性分析提高到基因水平。【方法】由维尔为基因供体转育而成的含有小麦重要抗条锈基因YrVir1的近等基因系Taichung29*6/YrVir1,用小麦条锈菌单胞菌系2E16对近等基因系Taichung29*6/YrVir1、轮回亲本Taichung29及其杂交后代进行遗传分析;选用YrVir1所在2B染色体上的141对引物对近等基因系和轮回亲本的基因组DNA进行SSR分析。【结果】近等基因系Taichung29*6/YrVir1对2E16的抗病性由1对显性基因控制;引物Xbarc349在近等基因系与轮回亲本间稳定扩增出特异性DNA片段,同时在近等基因系和基因供体维尔间存在相同扩增片段,经F2代群体200个抗、感单株检测证实,Xbarc349标记位点与抗条锈病基因YrVir1连锁,遗传距离为4.2 cm。【结论】Xbarc349引物扩增出的特异性DNA片段可作为抗条锈病基因YrVir1的SSR标记;根据小麦SSR遗传图谱,将YrVir1基因定位在小麦2B染色体上。 相似文献
9.
采用条锈病优势小种条中33（CYR33）对陕西关中地区小麦主要品种进行苗期抗病性鉴定,并采用SSR分子标记对抗病品种进行遗传多样性分析,以期了解陕西抗条锈品种的遗传多样性,为深入发掘优异的抗性基因资源及利用这些抗性基因,培育优良抗条锈新品种奠定基础。结果表明,在94个小麦品种中,对目前条锈病优势小种CYR33具有抗性的品种有24个,占25.5%。24个抗条锈小麦品种材料的遗传相似系数(GS)平均值为0.590,其变辐为0.338～0.824。这些结果说明,陕西关中地区的小麦抗条锈病品种具有较丰富的遗传多样性。 相似文献
10.
【目的】通过对华山新麦草与7182远缘杂交获得的抗条锈病新种质系9020-17-25-6进行抗条锈病鉴定和遗传分析,明确9020-17-25-6含有的抗病基因以及细胞学特性。【方法】在温室内以9020-17-25-6、感病对照铭贤169及其杂交后代F1、F2、F3和BC1群体为材料,采用我国目前流行的条锈菌生理小种CYR29、CYR30、CYR31、CYR32和CYR33对供试群体进行苗期抗条锈性鉴定,分析抗病基因的遗传规律,并利用基因组原位杂交(GISH)技术对9020-17-25-6含有的外源染色体片段进行鉴定。【结果】9020-17-25-6在苗期对5个条锈菌生理小种均表现免疫或近免疫,其抗性可能来源于华山新麦草。9020-17-25-6对CYR32和CYR33的抗病性都是由1对显性基因控制。GISH分析表明,9020-17-25-6含有来自华山新麦草的染色体或大的染色体片段,是一个普通小麦-华山新麦草易位系。【结论】华山新麦草易位系9020-17-25-6对我国目前流行的小麦条锈菌生理小种具有良好的抗病性,可以作为抗源在我国小麦抗锈育种中应用。 相似文献
11.
Min-na YANG Ph D candidate Zhi-bin XU Mei-nan WANG Jian-rong SONG Jin-xue JING Zhen-qi LI 《中国农业科学(英文版)》2008,7(8):901-906
Stripe rust is one of the most important diseases of wheat worldwide. Inheritance of stripe rust resistance and mapping of resistance gene with simple sequence repeat （SSR） markers are studied to formulate efficient strategies for breeding cultivars resistant to stripe rust. Zhongliang 88375, a common wheat line, is highly resistant to all three rusts of wheat in China. The gene conferring rust disease was deduced originating from Elytrigia intermedium. Genetic analysis of Zhongliang 88375 indicated that the resistance to PST race CYR31 was controlled by a single dominant gene, temporarily designated as Yr88375. To molecular map Yr88375, a F2 segregating population consisting of 163 individuals was constructed on the basis of the hybridization between Zhongliang 88375 and a susceptible wheat line Mingxian 169; 320 SSR primer pairs were used for analyzing the genetic linkage relation. Six SSR markers, Xgwm335, Xwmc289, Xwmc810, Xgdmll6, Xbarc59, and Xwmc783, are linked to Yr88375 as they were all located on chromosome 5BL Yr88375 was also located on that chromosome arm, closely linked to Xgdmll6 and Xwmc810 with genetic distances of 3.1 and 3.9 cM, respectively. The furthest marker Xwmc783 was 13.5 cM to Yr88375. Hence, pedigree analysis of Zhongliang 88375 combined with SSR markers supports the conclusion that the highly resistance gene Yr88375 derived from Elytrigia intermedium is a novel gene for resistance to stripe rust in wheat. It could play an important role in wheat breeding programs for stripe rust resistance. 相似文献
12.
Inheritance and Molecular Mapping of Stripe Rust Resistance Gene Yr88375 in Chinese Wheat Line Zhongliang 88375 总被引：2，自引：0，他引：2
Stripe rust is one of the most important diseases of wheat worldwide. Inheritance of stripe rust resistance and mapping of resistance gene with simple sequence repeat (SSR) markers are studied to formulate efficient strategies for breeding cultivars resistant to stripe rust. Zhongliang 88375, a common wheat line, is highly resistant to all three rusts of wheat in China. The gene conferring rust disease was deduced originating from Elytrigia intermedium. Genetic analysis of Zhongliang 88375 indicated that the resistance to PST race CYR31 was controlled by a single dominant gene, temporarily designated as Yr88375. To molecular map Yr88375, a F2 segregating population consisting of 163 individuals was constructed on the basis of the hybridization between Zhongliang 88375 and a susceptible wheat line Mingxian 169; 320 SSR primer pairs were used for analyzing the genetic linkage relation. Six SSR markers, Xgwm335, Xwmc289, Xwmc810, Xgdm116, Xbarc59, and Xwmc783, are linked to Yr88375 as they were all located on chromosome 5BL. Yr88375 was also located on that chromosome arm, closely linked to Xgdmll6 and Xwmc810 with genetic distances of 3.1 and 3.9 cM, respectively. The furthest marker Xwmc783 was 13.5 cM to Yr88375. Hence, pedigree analysis of Zhongliang 88375 combined with SSR markers supports the conclusion that the highly resistance gene Yr88375 derived from Elytrigia intermedium is a novel gene for resistance to stripe rust in wheat. It could play an important role in wheat breeding programs for stripe rust resistance. 相似文献
13.
14.
Stripe rust, caused by Puccinia striiformis f. sp. tritici （Pst）, is one of the most damaging diseases of common wheat （Triticum aestivum L.）. Wheat variety PIW138 introduced from Pakistan is resistant to the currently prevailing Pst race CYR32 in China. In this study, the bulked segregant analysis （BSA） method and simple sequence repeat （SSR） markers were used to map the stripe rust resistance gene in PIW138. The resistant and susceptible DNA bulks were prepared from the segregating F2 population of the cross between Thatcher, a susceptible variety as the female parent, and PIW138 as the male parent. The segregation of resistant and susceptible F2 plants inoculated with CYR32 indicated that single dominant gene determined the reactions of PIW138 line and temporarily designated as YrP138. Total 200 SSR primers were screened, and 4 SSR markers, Xwmc52, Xbarc61, Xgwm268, and Xgwm153, on chromosome 1B were found to be polymorphic between the resistant and the susceptible DNA bulks as well as their parents. Genetic linkage was tested on the segregating F2 population with 259 plants, including 196 resistant and 63 susceptible plants. All 4 SSR markers were linked to the stripe rust resistance gene in PIW138. The genetic distances of Xwmc52, Xbarc61, Xgwm268, and Xgwm153 to the resistance gene were 29.8, 6.2, 6.8, and 8.2 cM, respectively. 相似文献
15.
CH223是一个衍生于中间偃麦草的多抗性小偃麦种质系,通过感病的小麦品种与八倍体小偃麦TAI7047杂交、回交选育而成。抗性鉴定表明,CH223对我国当前小麦条锈病的流行小种CYR32,CYR33均有良好抗性。利用CH223与感病品种(系)的F2,F2∶3和BC1抗性分离群体进行抗性遗传分析,发现其条锈病抗性来自中间偃麦草,且由1对显性基因控制,暂时命名为YrCH223。用CYR32对来自台长29×CH223的221个F2植株进行接种鉴定,并构建抗、感DNA池。共筛选738对SSR引物,发现5对共显性SSR标记与抗病基因连锁,位置顺序为:Xgwm540-Xbarc1096-YrCH223-Xwmc47-Xwmc310-Xgpw7272,遗传距离分别为21.9,8.0,7.2,12.5,11.3 cM。进一步利用中国春缺体-四体和双端体材料扩增鉴定,将YrCH223定位于小麦4B染色体的长臂上(4BL)。经F2∶3群体验证,5个标记与YrCH223连锁。迄今为止,在4BL上未发现有公开报道的抗小麦条锈病基因。因此,基于抗病基因所在的染色体位置与来源,推断YrCH223是一个新的抗条锈病基因。 相似文献
16.
ZHANG Shu-ying XU Zhong-qing WANG Rui LI Qiang YAO Qiang JING Jin-xue 《中国农业科学(英文版)》2011,10(4):553-559
Stripe rust is one of the most important wheat diseases worldwide. To identify new resistance genes is significant in wheat breeding. In this study, stripe rust resistance of a Chinese cultivar Shah 515 was tested with Chinese predominant races of P. striiformis f. sp. tritici in the seedling stage, and genetic analysis and simple sequence repeats (SSR) technique were used to identify the inheritance model of seedling stripe rust resistance in cultivar Shan 515 and to mark the sites of resistance gene(s) on chromosome. The genetic analysis indicated that the resistance of Shan 515 against Su 11-4 was conferred by a single dominant gene, which was temporarily designated as YrShan515. Using bulked segregant analysis (BSA) and SSR markers, 12 SSR markers (Xwmc335, Xwmc696, Xwmc476, Xbarc267, Xgwm333, Xwmc653, Xwmc396,Xgwm213, Xgwm112, Xgwm274, Xcfd22, Xgwm131, and Xwmc517) located on wheat chromosome 7BL were linked to YrShan515 with genetic distance ranging from 3 to 24 eM. Based on the previously published genetic map and Chinese Spring nulli-tetrasomic analysis, YrShan515 was located on wheat chromosome 7BL. Polymorphism of wheat cuitivars collected from Huanghuai wheat grown regions were screened with two markers, Xwmc653 and Xbarc267, and all of these wheat cultivars tested did not present the polymorphic bands as Shan 515 did. Therefore, it suggested that YrShan515 might be a allele of the available yellow rust resistance gene. The mapping of the new resistance gene in Shan 515 is useful for wheat breeding and diversification of resistance genes against stripe rust in commercial wheat cultivars in China. 相似文献
17.
遗传分析表明,小麦材料ICA31携带一个显性抗条锈病基因,对流行的优势条锈菌小种条中30,31,32免疫;据等位性测定,ICA31抗条锈基因与已知抗锈基因Yr5、Yr10、Yr15不等位;从抗源的系谱分析,该基因来源于叙利亚普通小麦品系叙18;利用微卫星标记和分组分析(BSA)法,筛选到与该抗条锈病基因(Yr-Syria)紧密连锁的SSR标记WMS11-193;对F2分离群体142个单株分析结果表明,该抗条锈病基因(Yr-Syria)与WMS11-193间遗传距离为2.1cM;将Yr-Syria定位于小麦1BS上;为该基因进行抗条锈小麦分子辅助育种打下基础。 相似文献
18.
《农业科学学报》2016,(11)
Stripe rust is a serious foliar disease posing a grave threat to wheat production worldwide. The most economical and environmentally friendly way to control this disease is to breed and deploy resistant cultivars. Zhongmai 175 is an elite winter wheat cultivar conferring resistance to a broad spectrum of Puccinia striiformis f. sp. tritici(Pst) races. To identify the resistance gene in the cultivar, genetic analysis was conducted using the parents, F1, F2 and F2:3 populations derived from the cross of Lunxuan 987/Zhongmai 175. Segregations in the F2 and F2:3 populations indicated a single dominant gene conferring resistance to stripe rust in Zhongmai 175, temporarily designated Yr ZM175. Bulked segregant analysis(BSA) with wheat i Select 90 K SNP array determined a preliminary location of Yr ZM175. Subsequently, Yr ZM175 was mapped on chromosome 2AS using simple sequence repeats(SSR), expressed sequence tags(EST) and newly-developed kompetitive allele specific PCR(KASP) markers, being flanked by Xgwm636 and Xwmc382 at genetic distances of 4.9 and 8.1 c M, respectively. Comparison of reaction patterns of Yr ZM175 on 23 Pst races or isolates and pedigree analysis with other genes on chromosome 2AS suggested that it is likely to be a new gene for resistance to stripe rust. The resistance gene and linked molecular markers will be useful in wheat breeding targeting for the improvement of stripe rust resistance. 相似文献
19.
Xue-gui YIN Xun-wu SHANG Bin-shuang PANG Jian-rong SONG Shi-qin CAO Jin-chang LI Xue-yong ZHANG 《中国农业科学(英文版)》2006,5(7):483-490
Loss of variety resistance to stripe rust (Puccinia striiformis Westend f. sp.tritici) is an important factor causing massive periodical epidemic of rust in wheat production. Creation and development of new races of rust pathogen have led to serious crisis of resistance loss in widely planted varieties. This has quickened the search for new resistance resources. Molecular marker could facilitate the identification of the location of novel genes. A line A-3 with high resistance (immune) to currently epidemic yellow rust races (CY29, 31, 32) was screened out in offspring of Triticum aestivum × Thinopyrum ponticum. Segregation in F2 and BC1 populations indicated that the resistance was controlled by two independent genes: one dominant and one recessive. SSR markers were employed to map the two resistant genes in the F2 and BC1 populations. A marker WMC477-167bp located on 2BS was linked to the dominant gene with genetic distance of 0.4 cM. Another marker WMC364-208 bp located on 7BS was linked to the recessive-resistant gene with genetic distance of 5.8 cM. The two genes identified in this paper might be two novel stripe rust resistant genes, which were temporarily designated as YrTp1 and YrTp2, respectively. The tightly linking markers facilitate transfer of the two resistant genes into the new varieties to control epidemic of yellow rust. 相似文献