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Preliminary Mapping of the Leaf Rust Resistance Gene Lr3ka in Wheat
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Zhongrui HE, Hao XU, Weining YAN, Jinshuo WANG, Xinrui WANG, Zijie ZHOU, Peipei ZHANG, Zaifeng LI
Journal of Triticeae Crops | 2025, 45(3) : 322 - 328
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Journal of Triticeae Crops | 2025, 45(3): 322-328
• Genetics & Breeding •
Preliminary Mapping of the Leaf Rust Resistance Gene Lr3ka in Wheat
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Zhongrui HE, Hao XU, Weining YAN, Jinshuo WANG, Xinrui WANG, Zijie ZHOU, Peipei ZHANG, Zaifeng LI
Affiliations
  • College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China
Published: 2025-03-15 doi: 10.7606/j.issn.1009-1041.2025.03.05
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The known wheat leaf resistance gene Lr3ka is a seedling resistance gene exhibiting high levels of resistance in China with important application potentiality. In this study, to know more information of Lr3ka, leaf rust pathotype FHJR was used to inoculate RL6007(carrying Lr3ka), Thatcher and F2 populations to identify the leaf rust resistance at seedling stage. Genetic analysis and molecular markers were used to map Lr3ka. Results showed that RL6007 was resistant, while Thatcher was susceptible. The F2 population showed segregation, and chi-square tests confirmed the expected 1∶3 ratio (χ2=1.362, P=0.243>0.05), indicating Lr3ka is a recessive major resistance gene. A total of 100 SSR markers were developed according to the wheat reference sequence of Chinese Spring (IWGSCv2.1), and five SSR markers, namely ZBSF6BL-5, ZBSF6BL-12, ZBSF6BL-61, ZBSF6BL-99, and ZBSF6BL-100, showed good polymorphism between parents. The five markers were used to detect the population, Lr3ka was mapped on 6BL, flanking by SSR marker ZBSF6BL-61 and ZBSF6BL-99 both with genetic distance of 0.1 cM. The physical interval of Lr3ka is 716.2-730.7 Mb corresponding to Chinese Spring reference genome sequence V2.1. The SSR markers can be used for marker-assisted selection (MAS), and it provided reference for the utilization of the gene.

Wheat leaf rust  /  Leaf rust resistance gene Lr3ka  /  SSR  /  Gene mapping
Zhongrui HE, Hao XU, Weining YAN, Jinshuo WANG, Xinrui WANG, Zijie ZHOU, Peipei ZHANG, Zaifeng LI. Preliminary Mapping of the Leaf Rust Resistance Gene Lr3ka in Wheat[J]. Journal of Triticeae Crops, 2025 , 45 (3) : 322 -328 . DOI: 10.7606/j.issn.1009-1041.2025.03.05
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Year 2025 volume 45 Issue 3
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doi: 10.7606/j.issn.1009-1041.2025.03.05
  • Receive Date：2024-03-03
  • Online Date：2026-09-11
  • Published：2025-03-15
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  • Received：2024-03-03
  • Revised：2024-04-13
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    College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, China
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https://castjournals.cast.org.cn/joweb/mlzwxb/EN/10.7606/j.issn.1009-1041.2025.03.05
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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