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Identification of Allelic Variations of Grain Weight-Related Genes in 263 New Wheat Varieties(Lines) in the Southern Area of the Huanghuai Wheat Region
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Yu WANG1, Yuxiao GUO1, Tianyi SUN1, Xinxin GUO1, Pengwei LIN1, Yixuan CHEN1, Rui GUO1, Yizi LI1, Jie CHEN2, Yajie ZHANG3, Hongyuan ZHENG1
Journal of Triticeae Crops | 2026, 46(2) : 174 - 186
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Journal of Triticeae Crops | 2026, 46(2): 174-186
• Genetics & Breeding •
Identification of Allelic Variations of Grain Weight-Related Genes in 263 New Wheat Varieties(Lines) in the Southern Area of the Huanghuai Wheat Region
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Yu WANG1, Yuxiao GUO1, Tianyi SUN1, Xinxin GUO1, Pengwei LIN1, Yixuan CHEN1, Rui GUO1, Yizi LI1, Jie CHEN2, Yajie ZHANG3, Hongyuan ZHENG1
Affiliations
  • 1.College of Agronomy, Henan Agricultural University, Zhengzhou, Henan 450046, China
  • 2.Wheat Research Institute, Zhumadian Agricultural Academy of Sciences, Zhumadian, Henan 463000, China
  • 3.The Scientific and Technological Information Center of Henan, Zhengzhou, Henan 450003, China
Published: 2026-02-15 doi: 10.7606/j.issn.1009-1041.2026.02.04
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Thousand-kernel weight is one of the key yield components in modern wheat breeding where significant progress has been made through genetic improvement. It is crucial to conduct in-depth research on the important genes controlling wheat kernel weight and their functions. In this study, molecular markers for five genes related to wheat kernel weight (TaSus2-2B, TaGW8-B1, TaCwi-A1, TaGS-D1, and TaGW2-6A) were used to test 263 new wheat varieties (lines) collected from the 2023-2024 national trials in the Huanghuai wheat region. Among these varieties (lines), all kernel weight-related genes existed in combinations. There were nine types of combinations for the five prior haplotypes, specifically: TaGW8-B1a+TaGW2-6A-A, TaSus2-2Ba+TaGW8-B1a+TaGW2-6A-A, TaGW8-B1a+TaGS-D1a+TaCwi-A1a, TaGW8-B1a+TaGS-D1a+TaGW2-6A-A, TaGW8-B1a+TaCwi-A1a+TaGW2-6A-A, TaSus2-2Ba+TaGW8-B1a+TaGS-D1a+TaGW2-6A-A, TaGW8-B1a+TaGS-D1a+TaCwi-A1a+TaGW2-6A-A, TaSus2-2Ba+TaGW8-B1a+TaCwi-A1a+TaGW2-6A-A, and TaSus2-2Ba+TaGW8-B1a+TaGS-D1a+TaCwi-A1a+TaGW2-6A-A. Among these combinations, the TaSus2-2Ba+TaGW8-B1a+TaGW2-6A-A combination had the lowest frequency at 1.90%, while the TaGW8-B1a+TaGS-D1a+TaCwi-A1a+TaGW2-6A-A combination had the highest frequency at 31.56%. Further evaluation and analysis of kernel traits in 2023 in Zhengzhou and Zhumadian and in 2024 in Xinxiang revealed that among these nine gene combination types, the TaGW8-B1a+TaGW2-6A-A combination exhibited a relatively weak effect on increasing wheat kernel weight, whereas the combination type with five pyramided superior kernel weight-related alleles(TaSus2-2Ba+TaGW8-B1a+TaGS-D1a+TaCwi-A1a+TaGW2-6A-A) showed a relatively strong effect on improving wheat kernel weight. The results of this study indicated that increasing the number of superior kernel weight-related genes(haplotypes) could effectively enhance the kernel weight of wheat varieties in the Huanghuai wheat region.

Wheat  /  Grain weight  /  Molecular marker  /  Breeding  /  Southern area of the Huanghuai wheat region
Yu WANG, Yuxiao GUO, Tianyi SUN, Xinxin GUO, Pengwei LIN, Yixuan CHEN, Rui GUO, Yizi LI, Jie CHEN, Yajie ZHANG, Hongyuan ZHENG. Identification of Allelic Variations of Grain Weight-Related Genes in 263 New Wheat Varieties(Lines) in the Southern Area of the Huanghuai Wheat Region[J]. Journal of Triticeae Crops, 2026 , 46 (2) : 174 -186 . DOI: 10.7606/j.issn.1009-1041.2026.02.04
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Article Info
doi: 10.7606/j.issn.1009-1041.2026.02.04
  • Receive Date：2025-07-21
  • Online Date：2026-09-11
  • Published：2026-02-15
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History
  • Received：2025-07-21
  • Revised：2025-12-05
Funding
Affiliations
    1.College of Agronomy, Henan Agricultural University, Zhengzhou, Henan 450046, China
    2.Wheat Research Institute, Zhumadian Agricultural Academy of Sciences, Zhumadian, Henan 463000, China
    3.The Scientific and Technological Information Center of Henan, Zhengzhou, Henan 450003, China
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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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