共查询到18条相似文献，搜索用时 156 毫秒
1.
2.
水稻抗褐飞虱育种研究的现状与展望 总被引：1，自引：2，他引：1
褐飞虱是中国夏季水稻生产的主要害虫之一。选育与利用抗性品种被认为是控制水稻褐飞虱为害的有效途径之一。研究综述了稻褐飞虱的生物型/致害型、抗褐飞虱基因,着重介绍了中国抗褐飞虱育种的研究现状,并对今后的抗性育种研究提出了几点建议。 相似文献
3.
《分子植物育种》2020,(18)
褐飞虱是造成中国水稻减产最严重的虫害之一,发掘褐飞虱抗性基因是防治水稻褐飞虱的有效途径。籼稻‘ARC5833’是一份高抗褐飞虱的种质材料,为了明确籼稻‘ARC5833’对褐飞虱的抗性机理,以便在育种中加以利用。本研究利用‘ARC5833’与感虫材料‘9311’杂交构建包含145个F2:3家系的作图群体,采用苗期集团法进行褐飞虱抗性鉴定。结果显示,该群体中抗、感家系数分别为109和36,卡方分析表明有1对主效显性基因控制抗虫表型。进一步的基因定位表明,该抗性基因位于水稻第4染色体长臂上的分子标记4M11491与4M24.687之间,遗传距离为4.2 cM。该区间内最大LOD值为40,可以解析表型变异的72%。因该区间内已克隆一个抗褐飞虱基因Bph6,测序分析表明,它们的CDS和氨基酸序列相似度分别为99%和98%。因此,我们认为抗源‘ARC5833’中携带的抗褐飞虱基因与Bph6为等位基因。本研究完成了籼稻品系‘ARC5833’褐飞虱抗性基因对的遗传分析与基因定位,对利用该抗源提供了科学依据。 相似文献
4.
5.
ZHANG An-Ning LIU Yi WANG Fei-Ming XIE Yue-Wen KONG De-Yan NIE Yuan-Yuan ZHANG Fen-Yun BI Jun-Guo YU Xin-Qiao LIU Guo-Lan LUO Li-Jun 《作物学报》2019,45(11):1764-1769
褐飞虱是水稻的主要害虫之一,利用水稻抗褐飞虱基因培育抗虫品种是目前公认最经济有效、环境友好的策略。本研究利用水稻功能基因组已克隆的抗褐飞虱基因,通过分子标记辅助选择和常规回交育种相结合的方法,将抗褐飞虱基因Bph6、Bph9、Bph14和Bph15单独和聚合导入到节水抗旱稻恢复系旱恢3号,获得了一系列含有单基因、双基因、三基因和四基因的改良系。采用标准苗期集团筛选法进行褐飞虱抗性鉴定,评价这些基因在旱恢3号背景下的效应及相互作用。表明单基因改良系中, Bph9的抗性最强,且Bph9 Bph6 Bph15 Bph14;在聚合改良系中,抗性均优于单基因改良系,四基因聚合改良系的抗性最强,不同基因型组合的抗性效应是Bph6+Bph9+Bph14+Bph15Bph6+Bph9 Bph6+Bph9+Bph14 Bph6+Bph9+Bph15 Bph6+Bph14+Bph15 Bph9+Bph14+Bph15 Bph14+Bph15。在自然条件下,改良系与旱恢3号在株高、有效穗和千粒重等农艺性状上差异不显著,其他性状与旱恢3号相仿或略差。本试验表明单独和聚合导入Bph6、Bph9、Bph14和Bph15基因能显著提高节水抗旱稻恢复系的褐飞虱抗性,这4个基因的加性效应明显,可为今后节水抗旱稻抗褐飞虱育种提供理论依据和材料基础。 相似文献
6.
褐飞虱(Nilaparvata lugens Stal)是水稻最严重的害虫之一。已有人探索和利用天然抗性系统解决水稻生产中的褐飞虱问题。到目前为止，在本地籼稻品种和两个野生近缘种澳洲野稻和药用野生稻中鉴定到至少12个褐飞虱抗性主基因。 相似文献
7.
8.
Bph3是一个对褐飞虱具有广谱、持久抗性的主效基因,对水稻抗褐飞虱育种具有重要利用价值,但其至今仍缺乏基因特异性标记,限制了分子辅助育种中对它的高效利用。本研究通过对Bph3不同等位基因编码区进行测序比对,获得两个Bph3特异性SNP位点SNP1(Bph3为T,其余为C)和SNP2(Bph3为C,其余为T)。在等位基因特异性PCR(allele-specific polymerase chain reaction,AS-PCR)方法的基础上,开发两对显性标记特异扩增两个SNP位点来分别鉴定Bph3和其余等位基因型,组合使用两对显性标记即可获得一套鉴定Bph3基因型的共显性标记。使用该套标记对水稻品种基因组DNA进行PCR扩增,鉴定PCR产物条带大小即可区分Bph3不同基因型。利用该方法对Bph3基因进行分子标记辅助选择育种,可快速有效的将其导入目标水稻品种,加快水稻抗褐飞虱品种选育进程。 相似文献
9.
标记辅助培育水稻抗稻褐飞虱和稻白叶枯病基因聚合系 总被引：5，自引：3，他引：2
稻白叶枯病和稻褐飞虱是水稻的主要病虫害,利用优良的抗性基因培育抗性基因聚合系对于防治稻白叶枯病和稻褐飞虱具有重要意义。本研究通过回交与分子标记辅助选择相结合的方法,将抗稻白叶枯病基因Xa23和抗稻褐飞虱基因Bph3分别导入主栽杂交水稻品种的保持系先B、天B、盟B、龙特甫B和桂B中。结果表明,获得稳定的单抗性基因导入系1436份和双抗性基因聚合系144份。人工接种鉴定结果显示,Xa23导入系和Xa23Bph3聚合系对抗稻白叶枯水平达到中抗和接近高抗的水平(1.1～3.0级),Bph3导入系和Xa23Bph3聚合系抗褐飞虱水平达中抗到抗的级别(3.2～4.0级)。农艺性状分析显示多数抗性基因聚合系的株高、剑叶长宽度、每穗粒数、结实率、千粒重等主要农艺性状与受体差异不显著,只有少数聚合系有1～2个性状的差异。SSR标记分析表明抗性基因聚合系的遗传背景回复率达89.6%～97.8%,等位性位点纯合度达95.6%～99.9%。初步证明本研究已成功地获得抗稻白叶枯病和稻褐飞虱基因的聚合系,这些抗性改良保持系具有良好的应用前景,并为建立完善的分子设计育种平台提供了重要育种材料基础。 相似文献
10.
旨在筛选抗褐飞虱水稻材料,研究其对褐飞虱抗性机制。通过苗期抗性鉴定、成株期抗性鉴定筛选出了2份新培育的水稻材料,并对这2份水稻材料进行了忌避性、抗生性和耐害性的抗性试验。在苗期1105113表现为抗虫级别,1105096为高抗,在成株期1105096和1105113对褐飞虱均免疫;褐飞虱若虫和成虫均对1105096和1105113具有较强的忌避性;1105096和1105113对褐飞虱若虫存活率显著低于对照;1105096和1105113对褐飞虱的耐害性较弱,抗生性较强。这2个水稻材料在苗期和成株期均对褐飞虱具有良好的抗性效果。同时,这2个水稻材料对褐飞虱兼具有忌避性、抗生性和耐害性,其中抗生性作用较强,耐害性作用较弱,均可用于培育抗褐飞虱水稻品种。 相似文献
11.
普通野生稻(Oryza rufipogon Griff.)抗稻褐飞虱新基因的鉴定与利用 总被引：15，自引：0，他引：15
稻褐飞虱(BPH,NilaparvatalugensSt#l)是中国和世界稻区最严重的水稻害虫之一,发现和利用新抗性基因和进行抗性种质创新对于稻褐飞虱抗性品种的培育具有重要的意义。本研究进行了1200多份普通野生稻(OryzarufipogonGriff)种质对多种BPH生物型的抗性鉴定,获得了30份抗性资源,其中6份对分布于世界主要稻区的稻褐飞虱生物型1和2、孟加拉、湄公河(越南)、九龙江(越南)、潘特纳加(印度)等6种生物型或其中5种具有广谱高抗性。遗传分析证明了这些种质对BPH生物型2和九龙江生物型的抗性受2对重复作用隐性基因控制,对潘特纳加生物型的抗性受1对隐性基因控制,表明抗源对不同褐飞虱生物型具有不同的遗传机制。普通野生稻材料2183存在的2对隐性基因很可能是新发现的基因,因为在这些染色体区域还没报道有BPH抗性基因,这两对基因暂命名为bph18(t)和bph19(t)。研究总共培育出143份抗性创新种质和6份抗性品系或高产优质杂交水稻组合,这些优良的抗性创新种质为培育抗性新品种建立了坚实的基础。 相似文献
12.
Exploring genetic diversity of rice cultivars for the presence of brown planthopper (BPH) resistance genes and development of SNP marker for Bph18 
下载免费PDF全文
下载免费PDF全文 Gandhimani Ramkumar G. D. Prahalada Sherry Lou Hechanova Sung‐Ryul Kim Kshirod K. Jena 《Plant Breeding》2016,135(3):301-308
Brown planthopper (BPH) is the most devastating insect pest in rice‐growing areas. Information on availability of BPH resistance alleles and their sources enhances BPH‐resistant breeding programmes. In this study, 260 highly diversified rice cultivars or breeding lines were screened for the presence of five major BPH resistance genes (Bph10, Bph13, Bph18, Bph20 and Bph21) using gene‐specific markers. The analysis revealed that 137 of the 260 cultivars possess at least one BPH resistance gene. Bph10 was predominant while Bph20 was the least distributed. Moreover, two and three different resistance gene combinations were found in the cultivars. Molecular markers play an important role in molecular breeding programmes. A tightly linked PCR‐based co‐dominant Bph18 marker was developed, which is cost effective and time effective and simpler than available Bph18 CAPS marker (7312.T4A). We strongly believe that the identified BPH‐resistant cultivars can be used as alternative resistance gene sources and also as resource for novel BPH resistance genes. The developed Bph18 marker will be highly useful in molecular breeding applications of BPH‐resistant breeding programmes. 相似文献
13.
水稻改良品系对褐飞虱和白背飞虱的抗性评价 总被引：1，自引：0，他引：1
为评价水稻改良品系对褐飞虱和白背飞虱的抗性,采用标准苗期集团筛选法和辅以人工接虫诱发的田间成株期抗性鉴定评价了水稻改良品系苗期对褐飞虱的抗性以及成株期对褐飞虱和白背飞虱的抗性。结果表明,抗源RHT-sd1的改良品系G6和G8,Ptb33的改良品系G9和G10,Qb14的改良品系G15,Qb15的改良品系G16和G17对褐飞虱和白背飞虱均表现抗性,各抗源的改良品系对褐飞虱和白背飞虱均具抗性的检出率分别为25.0%、66.7%、25.0%和100.0%,可见对抗褐飞虱兼抗白背飞虱抗源品种进行改良可以获得多抗性新品系。本研究获得的7份抗褐飞虱兼抗白背飞虱改良品系在多抗性水稻品种的选育中具有重要的应用价值。 相似文献
14.
15.
Mapping quantitative trait loci and expressed sequence tags related to brown planthopper resistance in rice 总被引：3，自引：0，他引：3
To map genes responsible for brown planthopper (BPH) resistance in rice, a rice genetic map was constructed based on a recombinant inbred line population from a cross between a BPH‐resistant line ‘B5’ and a susceptible variety ‘Minghui 63’. Four quantitative trait loci (QTLs) for BPH resistance were detected. ESTs differentially regulated by BPH feeding were isolated by suppressive subtractive hybridization (SSH) and assigned to chromosomes based on RFLP mapping and searches of the rice genome database. The distribution of ESTs showed some clustering, and some ESTs are related to known QTLs and known BPH resistance genes. These findings suggest that the mapping of differentially induced ESTs may be a useful strategy for the identification of candidate plant defence genes, which could be beneficial in the development of a BPH‐resistant rice variety. 相似文献
16.
A new locus for resistance to brown planthopper identified in the indica rice variety DV85 总被引：1，自引：0，他引：1
C. C. Su J. Wan H. Q. Zhai C. M. Wang L. H. Sun H. Yasui A. Yoshimura 《Plant Breeding》2005,124(1):93-95
The brown planthopper (BPH) is one of the most destructive insect pests of rice. Resistant varieties have proved to be one of the most economic and effective measures for BPH management. In this study, an indica rice ‘DV85’ showed resistance to biotype 2 of BPH by bulked seedling test, and a recombinant inbred line (RIL) population derived from a cross between a susceptible rice ‘Kinmaze’ and ‘DV85’ was phenotyped to map genetic factors conferring BPH resistance in ‘DV85′. Composite interval mapping revealed that one quantitative trait locus (QTL) with a LOD score of 10.1 was detected between XNpb202 and C1172 on chromosome 11. This QTL was designated as Qbph11. Qbph11 explained 68.4% of the phenotypic variance of BPH resistance in this population. The allele from the resistant parent ‘DV85’ at Qbph11 reduced the damage caused by BPH feeding and would be very useful in breeding resistant rice varieties via marker‐assisted selection. 相似文献
17.
L. Yang R. B. Li Y. R. Li F. K. Huang Y. Z. Chen S. Sh. Huang L. F. Huang Ch. Liu Z. F. Ma D. H. Huang J. J. Jiang 《Euphytica》2012,183(2):161-171
Brown planthopper(BPH) is one of the most serious and destructive insect pests of rice in most rice growing regions of the world. In this study, two major resistance genes against BPH have been identified in an Oryza rufipogon (Griff.) introgression rice line, RBPH54. Inheritance of the BPH resistance in RBPH54 was studied by screening the resistance in parents, F1, F2 and BC1 generations against BPH biotype 2. A population of BC3F2 lines was developed and SSR markers were employed for the gene mapping, and new markers were designed for fine mapping of the resistance genes, while sequence information of BAC/PAC clones was used to construct physical maps of the genes. The results showed that the BPH resistance in RBPH54 was governed by recessive alleles at two loci, tentatively designated as bph20(t) and bph21(t). The locus bph20(t) was fine mapped to the short arm of chromosome 6 about 2.7 cM to the upper marker RM435 and 2.5 cM to lower marker RM540 and in a 2.5 cM region flanked by two new SSR markers BYL7 and BYL8 which were developed in the present study. The other BPH resistance locus bph21(t) was initially mapped to a region 7.9 cM to upper marker RM222 and 4.0 cM to lower marker RM244 on the short arm of chromosome 10. For physical mapping, the bph20(t)-linked markers were landed on BAC/PAC clones of the reference cv., Nipponbare, released by the International Rice Genome Sequencing Project. The bph20(t) locus was physically defined to an interval of about 75 kb with clone P0514G1. Identification and location of these two genes in the present study have diversified the BPH resistance gene pool, which give benefit to the development of resistant rice cultivars, and the linkage PCR-based SSR markers for the bph20(t) and bph21(t) genes would help realize the application of the genes in rice breeding through marker-assisted selection. 相似文献