Genetic Architecture of Wheat Domestication- and Improvement-Related Traits

A Special Issue of Genes (ISSN 2073-4425) belonging to the section "Plant Genetics and Genomics".

Deadline for manuscript submissions: 10 September 2026 | Viewed by 983

Editor


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Guest Editor
School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China
Interests: crop domestication; crop genomics; crop genetics; molecular breeding; QTL; yield and quality; crop ideotype design; wheat

Special Issue Information

Dear Colleagues,

Background:

Wheat is one of the world's most important staple food crops, accounting for around 20% of global dietary energy and protein intake. Domestication and improvement (post-domestication selection) are important processes in the evolution of crops. High and stable yield, as well as good quality, are vital goals in wheat breeding programs.

Aim and Scope:

Understanding the molecular basis of wheat domestication- and improvement-related traits could accelerate the magnitude of genetic gains of new varieties, thereby increasing grain production and improving quality to meet future food demands of a growing population.

History: The selection of genetic variations is the primary factor in adapting to diverse environments and achieving high, stable yields and good quality in wheat.

Cutting-Edge Research:

In recent years, significant progress has been made in identifying the genetic basis of domestication- and improvement-related traits through the use of forward and reverse genetics, multi-omics, gene editing, and speed breeding approaches.

What Kind of Papers We Are Soliciting:

This Special Issue welcomes original research articles in addition to reviews and opinions about the wheat origin and evolution, domestication syndrome, genetic diversity and improvement, genetics, genomics, gene mapping and cloning, molecular mechanism and function, molecular breeding, pan-omics, high-throughput genotyping and phenotyping, speed breeding, gene editing, synthetic biology, and other new approaches and advances associated with wheat domestication- and improvement-related traits.

Dr. Panfeng Guan
Guest Editor

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Keywords

  • wheat
  • origin and evolution
  • domestication syndrome
  • genetic diversity
  • genetic improvement
  • gene mapping and cloning
  • molecular mechanism and function
  • molecular breeding
  • pan-omics
  • new approaches

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Published Papers (1 paper)

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Research

18 pages, 3258 KB  
Article
Identification of QTL and Candidate Genes Controlling Plant Height and Internode Length in a Newly Characterized Bread Wheat Recombinant Inbred Population
by Zidong Wan, Shuai Ge, Mengxin Li, Xinyan Wang, Dongjie Cui, Qing Chi, Bing Li, Hangbo Xu, Jialing Lu, Zhen Jiao, Wenhui Wei and Panfeng Guan
Genes 2026, 17(5), 567; https://doi.org/10.3390/genes17050567 - 17 May 2026
Viewed by 569
Abstract
Background: Internode length (IL), a key component of plant height (PH), plays an important role in achieving the optimal architecture in wheat. However, the genetic mechanisms underlying internode elongation are not well understood. Methods: In this study, a recombinant inbred line (RIL) population [...] Read more.
Background: Internode length (IL), a key component of plant height (PH), plays an important role in achieving the optimal architecture in wheat. However, the genetic mechanisms underlying internode elongation are not well understood. Methods: In this study, a recombinant inbred line (RIL) population derived from a cross between Bainong 4199 (BN4199) and Zhengyinmai 2 (ZYM2) was evaluated for PH and five ILs across two field locations over two years and genotyped using a 120 K liquid-phase chip. Results: A total of 141 quantitative trait loci (QTL) associated with PH and the five ILs were mapped onto 20 chromosomes, except for chromosome 5D. Among these, 37 stable QTL were identified on chromosomes 1B, 2B, 2D, 4B, 5A, 7A, 7B and 7D, accounting for 3.86–25.97% of the phenotypic variation. Meanwhile, 23 co-localized QTL associated with at least two traits were detected, with QTL cluster regions on chromosomes 2D, 4B, 5A, 7A, and 7B. Moreover, the total additive effects of the QTL combinations increased with the number of QTL, which indicates the effectiveness of pyramid breeding. Additionally, based on gene function annotation, the cloning and characterization of rice orthologs, and analysis via the QTG miner module of the wheat integrative gene regulatory network (wGRN) platform, 63 candidate genes (e.g., Rht1, Rht8, TB1 and ZnF-B) were prioritized within the stable QTL intervals, and their tissue expression patterns were analyzed. Conclusions: Collectively, these findings not only deepen our understanding of the genetic basis of PH and ILs in wheat but also lay a foundation for the further validation and functional characterization of candidate genes, enabling the optimization of plant architecture through marker-assisted selection (MAS) to ultimately improve agronomic performance and yield potential. Full article
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