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Journal of Integrative Agriculture  2019, Vol. 18 Issue (5): 1014-1023    DOI: 10.1016/S2095-3119(19)62575-X
Special Issue: 植物抗病遗传合辑Plant Disease-resistance Genetics
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Seedling and adult plant resistance to leaf rust in 46 Chinese bread wheat landraces and 39 wheat lines with known Lr genes
ZHANG Pei-pei1, Takele Weldu Gebrewahid1, 2, ZHOU Yue3, LI Qing-luo1, LI Zai-feng1, LIU Da-qun  
1 Department of Plant Pathology, College of Plant Protection, Hebei Agricultural University, Baoding 071001, P.R.China
2 College of Agriculture, Aksum University-Shire Campus, Shire-Indaslassie 314, Ethiopia
3 College of Biochemistry and Environmental Engineering, Baoding University, Baoding 071001, P.R.China
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Wheat leaf rust, caused by Puccinia triticina (Pt), is an important foliar disease that has an important influence on wheat yield.  The most economic, safe and effective way to control the disease is growing resistant cultivars.  In the present study, a total of 46 wheat landraces and 34 wheat lines with known Lr (leaf rust resistance) genes were inoculated with 16 Pt pathotypes for postulating seedling resistance gene(s) in the greenhouse.  These cultivars and five wheat differential lines with adult plant resistance (APR) genes (Lr12, Lr22b, Lr34, Lr35 and Lr37) were also evaluated for identification of slow rusting resistance in the field trials in Baoding, Hebei Province of China in the 2014–2015 and 2015–2016 cropping seasons.  Furthermore, 10 functional molecular markers closely linked to 10 known Lr genes were used to detect all the wheat genotypes.  Results showed that most of the landraces were susceptible to most of the Pt pathotypes at seedling stage.  Nonetheless, Lr1 was detected only in Hongtangliangmai.  The field experimental test of the two environments showed that 38 landraces showed slow rusting resistance.  Seven cultivars possessed Lr34 but none of the landraces contained Lr37 and Lr46Lr genes namely, Lr9, Lr19, Lr24, Lr28, Lr29, Lr47, Lr51 and Lr53 were effective at the whole plant stage.  Lr18, Lr36 and Lr45 had lost resistance to part of pathotypes at the seedling stage but showed high resistance at the adult plant stage. Lr34 as a slowing rusting gene showed good resistance in the field.  Four race-specific APR genes Lr12, Lr13, Lr35 and Lr37 conferred good resistance in the field experiments.  Seven race-specific genes, Lr2b, Lr2c, Lr11, Lr16, Lr26, Lr33 and LrB had lost resistance.  The 38 landraces showed slow rusting resistance to wheat leaf rust can be used as resistance resources for wheat resistance breeding in China.
Keywords:  Triticum aestivum L.        wheat leaf rust        gene postulation        adult plant resistance  
Received: 23 June 2018   Accepted:
Fund: This study was supported by the National Key Research and Development Program of China (2017YFD0300906-07).
Corresponding Authors:  Correspondence LI Zai-feng, Tel: +86-312-7528500, E-mail:; LIU Da-qun, Tel: +86-312-7528500, E-mail:   
About author:  ZHANG Pei-pei, E-mail:;

Cite this article: 

ZHANG Pei-pei, Takele Weldu Gebrewahid, ZHOU Yue, LI Qing-luo, LI Zai-feng, LIU Da-qun. 2019. Seedling and adult plant resistance to leaf rust in 46 Chinese bread wheat landraces and 39 wheat lines with known Lr genes. Journal of Integrative Agriculture, 18(5): 1014-1023.

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