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作物学报 ›› 2015, Vol. 41 ›› Issue (06): 872-880.doi: 10.3724/SP.J.1006.2015.00872

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

抗禾谷孢囊线虫小麦新种质H3714和H4058的培育与鉴定

孙喜营1,2,崔磊2,3 孙 蕾2,孙艳玲2,邱丹1,2,邹景伟1,2,武小菲2,王晓鸣2,李洪杰2,*   

  1. 1 河北科技师范学院生命科技学院, 河北秦皇岛066604; 2 中国农业科学院作物科学研究所 / 农作物基因资源与基因改良国家重大科学工程, 北京100081; 3 山西省农业科学院作物科学研究所, 山西太原030031
  • 收稿日期:2015-01-16 修回日期:2015-04-02 出版日期:2015-06-12 网络出版日期:2015-04-14
  • 基金资助:

    本研究由国家自然科学基金项目(31171545), 国家现代农业产业技术体系建设专项(CARS-3-1)和中国农业科学院创新团队项目资助。

Development and Identification of Wheat Lines H3714 and H4058 Resistant to Cereal Cyst Nematode

SUN Xi-Ying1,2,CUI Lei2,3,SUN Lei2,SUN Yan-Ling2,QIU Dan1,2,ZOU Jing-Wei1,2,WU Xiao-Fei2,WANG Xiao-Ming2,LI Hong-Jie2,*   

  1. 1 College of Life Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, China; 2 National Key Facility for Crop Gene Resources and Genetic Improvement / Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China;3 Institute of Crop Science, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, China
  • Received:2015-01-16 Revised:2015-04-02 Published:2015-06-12 Published online:2015-04-14

摘要:

在我国小麦主产区均有禾谷孢囊线虫(CCN, Heterodera spp.)发生。限于有效抗源的严重匮乏, 抗CCN育种研究一直难以规模化开展。Madsen是一个抗孢囊线虫的美国冬小麦品种, 但抽穗偏晚使其很难在育种上迅速利用。本研究利用中国小麦品种烟农21和济麦19与Madsen杂交和回交, 从BC1F4代中选育出稳定品系H3714和H4058。田间病圃和温室接种鉴定结果表明, 这2个品系对河南省H. avenae荥阳群体(致病型Ha43)和H. filipjevi许昌群体(致病型Hfc-1)的抗性显著优于烟农21和济麦19。在接种条件下, 两个品系表现成株期白粉病抗性, H4058苗期还可抗不同白粉菌菌株。2个品系的抽穗期与烟农21和济麦19相似, 明显早于Madsen。利用偏凸山羊草2NS染色体特异分子标记VENTRIUP-LN2及该染色体上Vrga1D基因特异分子标记Vlr2.6-3′-Vlr2.4-5′和VRGA-F11-VRGA-R5分析, 发现H3714和H4058含有偏凸山羊草2NS染色体片段, 且该染色体片段来自Madsen。根据Illumina iSelect 90K SNP分析结果, 两个品系的染色体构成存在差异。在检测到两个品系共有的4918个多态性SNP中, 2/3的SNP位点在2个姊妹系间表现相同, 另外1/3的SNP位点表现不同。本研究培育的抗禾谷孢囊线虫小麦新种质H3714和H4058可作为培育抗线虫小麦品种的抗源。

关键词: 小麦, 孢囊线虫, 白粉病, 抗病性

Abstract:

Cereal cyst nematode (CCN, Heterodera spp.) has occurred in major wheat (Triticum aestivum L.) producing regions in China. Developing wheat cultivars resistant to CCN is limited due to the shortage of effective sources of resistance. Madsen, a winter wheat cultivar released in the Pacific Northwest Region of the USA, is highly resistant to CCN populations from China. However, it is difficult to use this cultivar in breeding programs because of its late heading and maturity. In the present study, Chinese winter wheat cultivars Yannong 21 and Jimai 19 were crossed and backcrossed to Madsen, and lines H3714 and H4058 were developed from BC1F4 progenies. Tests under both natural infestation and artificial inoculation conditions indicated that resistance of H3714 and H4058 to the H. avenae Xingyang population (pathotype Ha43) and the H. filipjevi Xuchang population (pathotype Hfc-1) from Henan province was superior to that of Yannong 21 and Jimai 19. Results of the field test inoculated with a mixture of Bgt isolates demonstrated that both lines showed adult plant resistance to powdery mildew, and line H4058 was also resistant to different Bgt isolates at the seedling stage. The heading date of these lines was comparable to that of Yannong 21 and Jimai 19, and obviously earlier than that of Madsen. The fragments of chromosome 2NS from Aegilops ventricosa were detected in lines H3714 and H4058 using a pair of chromosome-specific primers VENTRIUP-LN2 and the molecular markers Vlr2.6-3′-Vlr2.4-5′ and VRGA-F11-VRGA-R5 that were specific for Vrga1D gene from Ae. ventricosa. Results of Illumina iSelect 90K SNP assay showed that the two lines differed in their chromosome constitutions. Two thirds of the polymorphic SNPs were identical and the remaining ones were different among 4918 polymorphic SNPs between the two sib lines. The newly developed wheat lines H3714 and H4058 can be used as sources of resistance in developing CCN-resistant wheat cultivars.

Key words: Triticum aestivum, Cereal cyst nematode, Powdery mildew, Resistance

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