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1.
利用5个锈病成株期抗性基因的KASP标记Sr2_ger9 3p、Lr34jagger、CSTM4_67G、Lr68-2、VPM_SNP和抗赤霉病基因Fhb1的KASP标记TaHRC-KASP,对云南省育成的42个小麦品种（系）进行检测,旨在筛选出含有目标基因的优异小麦种质,为云南省持久抗病小麦新品种（系）的选育提供材料。结果表明,4个材料含兼抗型成株抗锈病基因Lr34/Yr18/Sr57,频率为9.52%;6个品种（系）含兼抗型成株抗锈病基因Lr67/Yr46/Sr55,频率为14.29%;7个材料含抗慢叶锈病基因Lr68,频率为16.67%;含兼抗型成株抗锈病基因Sr2/Yr30和成株抗叶锈基因Lr37的材料各有1个,频率均为2.38%;未检测出含抗赤霉病基因Fhb1的品种（系）。云麦69、云麦75、云麦56、宜麦1号和宜麦3号等兼有2个成株期抗锈病基因,可作为今后云南持久抗锈病育种的抗源材料。 相似文献
2.
慢锈性基因Lr 34/Yr 18/Pm 38对小麦叶锈病和条锈病都具有广谱持久抗性,为明确该基因在四川小麦品种(系)中的分布,对90份四川小麦品种(系)进行慢锈病基因Lr 34/Yr 18/Pm 38的分子检测。利用与Lr 34/Yr 18/Pm 38基因位点紧密连锁的STS标记cs LV 34和基于该基因第11外显子(exon 11)等位变异开发的4对功能标记cssfr 1、cssfr 2、cssfr 3、cssfr 4检测90份四川小麦品种(系)。结果表明,所检测的90份四川小麦材料中都不含Lr 34/Yr 18/Pm 38位点,功能标记cssfr 1~cssfr 4检测结果与STS标记cs LV 34检测结果一致。结论:四川小麦品种(系)含有Lr 34/Yr 18/Pm 38基因位点的材料较少,在过去育种中,Lr 34/Yr 18/Pm 38基因不被人们重视,没有得到很好的利用。 相似文献
3.
《华北农学报》2018,(6)
为了初步明确39份外引小麦种质中条锈病和白粉病抗性基因组成,利用共分离或紧密连锁的分子标记对抗条锈病基因Yr5、Yr10、Yr18和抗白粉病基因Pm4、Pm13、Pm21进行检测,同时结合田间鉴定,对外引种质的抗病性进行评价。结果表明,携带Yr18基因的种质有6份,对条锈病菌表现近免疫至中抗,抗性表现稳定; Yr5连锁标记S1320阳性的种质有21份,Yr10连锁标记SC200阳性的种质有2份,但标记阳性的种质中抗病性表现不一致,可能跟载体品种的遗传背景有关,利用这些分子标记进行辅助育种时,要结合接种鉴定结果综合判断。Pm4基因基本丧失白粉病抗性,携带该基因的7份种质中仅有1份抗病。在39份种质中,均未检测到抗白粉病基因Pm13和Pm21。此外,有2份种质澳阿优1号和bermude兼具条锈病和白粉病抗性,综合抗病性好,在育种中可以合理利用。为小麦抗病育种亲本选择和种质资源的合理利用提供了参考依据。 相似文献
4.
小麦新品种“山农20”抗病基因的分子检测 总被引：1，自引：0，他引：1
山农20是2011年和2012年分别通过国家黄淮南、北片审定的小麦高产多抗新品种,在国家区试抗病性鉴定和生产中都表现出良好的抗黄淮麦区主要病害的特性。本研究利用与小麦抗白粉病、条锈病、叶锈病、纹枯病基因和抗赤霉病主效QTL紧密连锁的SSR、SCAR、STS等标记对该品种进行了分子检测,发现山农20含有6个抗白粉病基因(Pm12、Pm24、Pm30、Pm31、Pm35和Pm36),6个抗条锈病基因(Yr5、Yr9、Yr15、Yr24、Yr26和YrTp1),2个抗叶锈病基因(Lr21和Lr26),1个抗纹枯病基因(Ses1),但未检测到抗赤霉病主效QTL。分子检测结果部分解释了山农20的优良抗病性,也为利用分子标记辅助选择培育抗病稳产小麦新品种提供参考。 相似文献
5.
小麦慢白粉病QTL对条锈病和叶锈病的兼抗性 总被引：1，自引：0，他引：1
聚合兼抗白粉病、条锈病和叶锈病的慢病性基因,是培育持久多抗小麦品种的重要措施。百农64和鲁麦21均为慢白粉病品种,分别含有4个和3个慢白粉病抗性QTL。将百农64与鲁麦21杂交,获得21个聚合2~5个慢白粉病抗性QTL的F6株系,于2012-2013年度分别在四川郫县和甘肃天水进行条锈病田间抗性鉴定,在河北保定和河南周口进行叶锈病田间抗性鉴定。分析21个株系条锈和叶锈病的最大严重度和病程曲线下面积,检测单个QTL和QTL聚合体对条锈病和叶锈病的抗性效应。结果表明,QPm.caas-4DL、QPm.caas-6BS和QPm.caas-2BL对条锈病均有显著的抗性,分别解释表型变异的16.9%、14.1%和17.3%;QPm.caas-4DL对叶锈病也有显著抗性,可解释表型变异的35.3%;QPm.caas-1A/QPm.caas-4DL/ QPm.caas-2DL/QPm.caas-2BS/QPm.caas-2BL和QPm.caas-1A/QPm.caas-4DL/QPm.caas-2BS/QPm.caas-2BL聚合体对条锈病和叶锈病的抗性显著高于两亲本,它们均含有来自百农64的QPm.caas-4DL以及来自鲁麦21的QPm.caas-2BL和QPm.caas-2BS,表明这些QTL具有明显的兼抗性效应。在小麦抗病育种中,聚合慢病性QTL越多,慢病性越强,聚合4~5个慢病性QTL时,株系可达到高抗甚至接近免疫的水平,是选育持久抗性小麦品种的重要手段。 相似文献
6.
《种子》2020,(7)
小麦慢锈病是危害小麦生产的重要病害。为了鉴定258份贵州小麦品种(系)中慢锈基因Lr34/Yr18的组成,筛选含慢锈抗性基因Lr34/Yr18的种质资源,本研究利用STS标记csLV 34结合毛细管电泳技术对258份小麦品种(系)中慢锈抗性基因Lr34/Yr18的等位变异进行了分子检测。结果表明:毛细管电泳谱带清晰易读,可根据扩增片段分子量直接判断目标片段有无。STS标记csLV 34可在含有Lr34/Yr18基因的材料中扩增出150 bp片段,部分不含Lr34/Yrl8的材料则扩增出229 bp片段,余下大部分不含Lr34/Yrl8的材料没有扩增出150 bp和229 bp的片段;258份小麦品种(系)中有5份材料扩增出150 bp片段,可能含有Lr34/Yr18基因,占供试材料的1.9%。筛选的这些慢锈抗性种质资源可为今后贵州小麦的慢锈抗病品种选育提供参考。 相似文献
7.
为了对40份来自国际玉米小麦改良中心(CIMMYT)的小麦材料进行抗叶锈病基因鉴定,试验结合系谱分析、基因推导和分子标记检测等方法在苗期对36个已知抗病基因载体品种和供试的40份小麦材料接种17个具有毒性差异的叶锈菌生理小种,通过对比供试小麦材料与已知单基因载体品种侵染型,推导出供试小麦材料中可能携带的已知抗叶锈病基因,同时利用12个与已知抗病基因紧密连锁的标记对供试材料进行标记检测,检测结果与基因推导相互验证。进一步将40份供试品系分别种植于河北保定和河南周口试验田,接种叶锈菌混合小种进行田间成株期抗叶锈性鉴定。结果表明,7个供试小麦材料含有Lr1,携带Lr10的有9个品系,携带Lr11和Lr34的分别有10个品系,含有Lr14a、Lr15和Lr26的分别有2,4,3个小麦品系;另外,经标记检测成株抗叶锈病基因Lr37和Lr46分别存在于22,39个小麦品系中,经田间鉴定有22个小麦品系表现成株抗性。 相似文献
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9.
良星99是黄淮冬麦区和北部冬麦区推广的抗白粉病冬小麦品种,其抗白粉病基因位于2BL染色体,已被命名为Pm52。利用来自不同小麦生产区的123个小麦白粉菌菌株进行抗性鉴定,良星99可抗80%的菌株。2012-2016年连续5个生长季抗性鉴定中,良星99在成株期对接种的白粉菌混合菌株都表现免疫或高抗。采用Pm52基因紧密连锁分子标记Xgwm120和27个菌株对10个利用良星99培育的品系进行分子检测和抗性分析发现,衡4568、邯农2312、中信麦99和DH51302可能携带Pm52基因,而郑麦369和冀麦729的白粉病抗性基因可能与Pm52不同。石U09-4366、XR4429、衡10-5039和农大3486苗期和成株期都表现感病,不含Pm52基因。这些品种的成株期抗性反应与苗期的抗性反应一致。本研究的结果有利于良星99的抗白粉病基因Pm52在育种和生产上的有效利用。 相似文献
10.
湖北省主要小麦品种抗病基因分析 总被引：1，自引：0，他引：1
明确主导品种和有潜力新品种的抗病基因的组成及其抗性形成机制,可为利用MAS方法高效利用抗病基因、快速聚合主效基因以及多抗小麦新品种的培育提供参考。本研究在明确具有代表性湖北品种抗病性的基础上,选用52个小麦抗赤霉病、条锈病、白粉病和纹枯病的基因(QTL)的功能标记或连锁标记对其进行分子鉴定和分析。分析表明:湖北省主要小麦品种的抗病性整体不强,特别是纹枯病和赤霉病抗性亟待提高;除Fhb1和Fhb4外,其他检测的抗赤霉病主效位点均可以在参试品种中检出3个抗条锈病性基因(Yr2,Yr5和Yr48)和8抗条锈病基因(Pm2,Pm8,Pm16,Pm24,Pm32,Pm33,Pm34和Pm35)可以在参试品种中检出,其中Yr2、Yr48和Pm2存在于所有参试品种中;13个抗纹枯病抗性标记在参试品种中可以被检出。分子检测部分解释了湖北省主要小麦品种的抗病分子基础,为分子标记辅助选择高效利用抗病基因提供参考。 相似文献
11.
小麦抗病育种的战略问题——小麦对锈病、白粉病第二线抗源的建立和应用 总被引：25，自引：4，他引：25
自1979年起，逐步形成了一套包括抗源搜集、筛选、分析、遗传研究和转育等5个步骤的抗源搜集、研究和应用体系。目的在于寻求尽可能多的，不同于1BL/1RS所含有的Yr9，Lr26和Pm8的，多样化的第二线抗源，并将它们转育到较好的遗传背景中去。至目前为止，已找到33个不同于上述基因的二线抗源，并用其中一些育成了62个农艺性状大 相似文献
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Molecular mapping and detection of the yellow rust resistance gene Yr26 in wheat transferred from Triticum turgidum L. using microsatellite markers 总被引：15，自引：0，他引：15
Jianxin Ma Ronghua Zhou Yushen Dong Lanfen Wang Xiaoming Wang Jizeng Jia 《Euphytica》2001,120(2):219-226
Yellow rust (stripe rust), caused by Puccinia striiformis Westend f. sp. tritici, is one of the most devastating diseases of wheat throughout the world. Wheat-Haynaldia villosa 6AL.6VS translocation lines R43, R55, R64 and R77, derived from the cross of three species, carry resistance to both yellow
rust and powdery mildew. An F2 population was established by crossing R55 with the susceptible cultivar Yumai 18. The yellow rust resistance in R55 was
controlled by a single dominant gene, which segregated independently of the powdery mildew resistance gene Pm21 located in the chromosome 6VS segment, indicating that the yellow rust resistance gene and Pm21 are unlikely to be carried by the same alien segment. This yellow rust resistance gene was considered to beYr26, originally thought to be also located in chromosome arm 6VS. Bulked Segregation Analysis and microsatellite primer screens
of the population F2 of Yumai 18 × R55 identified three chromosome 1B microsatellite locus markers, Xgwm11, Xgwm18 and Xgwm413, closely linked to Yr26. Yr26 was placed 1.9 cM distal of Xgwm11/Xgwml8, which in turn were 3.2 cM from Xgwm413. The respective LOD values were 21 and 36.5. Therefore, Yr26 was located in the short arm of chromosome 1B. The origin and distribution of Yr26 was investigated by pedigree, inheritance of resistance and molecular marker analysis. The results indicated that Yr26 came from Triticum turgidum L. Three other 6AL.6VS translocation lines, R43, R64 and R77, also carried Yr26. These PCR-based microsatellite markers were shown to be very effective for the detection of the Yr26 gene in segregating populations and therefore can be applied in wheat breeding.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
14.
Qing-Dong Zeng De-Jun Han Qi-Lin Wang Feng-Ping Yuan Jian-Hui Wu Li Zhang Xiao-Jie Wang Li-Li Huang Xian-Ming Chen Zhen-Sheng Kang 《Euphytica》2014,196(2):271-284
Stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most important diseases on wheat in China. To assess resistance in wheat cultivars and breeding lines in China, 330 leading cultivars and 164 advanced breeding lines were evaluated with stripe rust. In the greenhouse tests, seedlings of the entries were inoculated separately with several Pst pathotypes. In the field tests, the entries were evaluated for stripe rust resistance in Yangling, Shaanxi Province artificially inoculated and in Tianshui, Gansu Province under natural infection of Pst. The oversummering/wintering and spring epidemic zones of resistance genes were postulated using molecular markers for Yr5, Yr9, Yr10, Yr15, Yr17, Yr18, and Yr26, in combination with resistance spectra. Out of the 494 wheat entries, 16 (3.24 %) entries had all-stage resistance (ASR) in all race tests, 99 (20.04 %) had adult-plant resistance (APR), 28 (5.67 %) were considered to have slow-rusting (SR), and 351 (71.05 %) were susceptible to one or more races in both seedling and adult-plant stages. Advanced breeding lines had a higher percentage (37.2 %) of resistant entries (The sum of ASR, APR and SR) than leading cultivars (24.85 %). Among the epidemic regions, southern Gansu had a higher percentage of resistant entries than any other regions. Based on stripe rust reactions and molecular markers, two cultivars were found to possibly have Yr5 while no entries have Yr10 or Yr15. Resistance genes Yr9, Yr17, Yr18, and Yr26 were found in 134 (29.4 %), 45 (9.1 %), 10 (2 %), and 15 (3 %) entries, respectively. 相似文献
15.
Genes for Powdery Mildew Resistance in Cultivars of Spring Wheat 总被引：1，自引：0，他引：1
Twenty-three cultivars of spring wheat were inoculated with nineteen different powdery mildew isolates; their ruction patterns hive been compared with those of twenty-two cultivars/lines carrying identified powdery mildew resistance genes. Applying the gene-for-gene hypothesis, it is evident that three cultivars have none of the resistance genes used, seven others (including ‘Solo’) may carry Pm4b, only. The resistance pattern of ‘Selpek’ is identical to A/-1 resistant cultivars of winter wheat and may be explained by the presence of Pm5. The resistance pattern of Pm5 (Mt-i) cultivars is very different from a number of ‘Kolibri’-related cultivars of spring wheat. Since either all or nothing of that specific pattern has been transferred to all cross progenies of ‘Kolibri’, a single gene is assumed to oe responsible for it, preliminarily designated as Ml-k. The cultivar ‘Mephisto’ carries the ‘Normandie’ resistance (Pwl 2, 9). In five cultivars to spring wheat the combined effects of at least two of the above-mentioned sources have been found. Despite the fact that ‘Normandie’ and ‘Sappo’ are not closely related. ‘Sappo’ shows the complete ‘Normandie’ resistance pattern plus that of Pm4b. The same is true for ‘Planet’ and ‘Walter’. 相似文献
16.
Characterisation and origin of rust and powdery mildew resistance genes in VPM1 wheat 总被引：3，自引：0，他引：3
Summary The expression of rust resistances conferred by closely linked genes derived from VPM1 varied with environmental conditions and with genetic backgrounds. Under low light and low temperature conditions seedlings carrying Yr17 showed susceptible responses. Stem rust and leaf rust resistance genes Sr38 and Lr37 tended to confer more resistance at 17±2° C than at normal temperatures above > 20° C. These studies supported the hypothesis that Yr17, Lr37 and Sr38 were derived from Aegilops ventricosa, whereas Pm4b was probably derived from T. persicum. Studies on certain addition lines and parental stocks indicated that wheat cytoplasm may enhance the expression of Sr38. 相似文献
17.
78份四川小麦育成品种(系)条锈病抗性鉴定与抗条锈病基因分子检测 总被引：1，自引：0，他引：1
四川省是小麦条锈菌新小种产生的重要地区之一,了解2016年以来四川小麦育成品种(系)对当前流行的条锈菌生理小种和致病类型的抗性水平以及明确其抗条锈病基因的分布状况,可为四川育种防控小麦抗条锈病和品种布局提供理论依据。本研究选择2个小种CYR32和CYR34对78份四川小麦育成品种(系)进行苗期鉴定,利用当前小麦条锈菌优势小种CYR32、CYR33、CYR34,以及贵22-14、贵农致病类群等混合菌进行成株期人工接种鉴定,并利用19个抗条锈病QTL和基因QYr.nwafu-4BL、Yr5、Yr10、Yr15、Yr17、Yr18、Yr26、Yr28、Yr29、Yr30、Yr36、Yr39、Yr41、Yr48、Yr65、Yr67、Yr78、Yr80和Yr81的分子标记对供试材料进行抗条锈病基因检测。结果表明,在78份供试材料的苗期鉴定中,对CYR32表现出抗性的有60份,占76.92%;对CYR34表现出抗性的有40份,占51.28%;同时对CYR32和CYR34表现抗性的有36份,占46.15%。78份小麦品种(系)在成株期均表现抗条锈病,其中绵麦835、蜀麦1743、蜀麦1829和蜀麦1868表现为免疫。苗期和成株期抗病性鉴定结果表明,成株期抗性材料有42份,占53.85%;全生育期抗性材料有36份,占46.15%。分子检测结果表明,可能携带QYr.nwafu-4BL、Yr15、Yr17、Yr18、Yr26、Yr28、Yr29、Yr30、Yr39、Yr41、Yr65、Yr67、Yr78、Yr80和Yr81的材料分别有5、5、45、2、30、5、30、39、3、2、22、8、23、6和24份。同时携带2~6个抗条锈病基因的聚合材料分别有24、22、11、14和3份,占94.87%。所有供试品种(系)均未检测到Yr5、Yr10、Yr36和Yr48,仅西科麦18未检测到上述19个抗条锈病基因,可能携带其他已知或新的条锈病抗性基因。本研究鉴定了78份四川小麦育成品种(系)对条锈病抗性水平整体较好,明确了其携带的抗条锈病基因,为利用其培育持久抗性小麦品种提供了科学依据。 相似文献