2025-09-02 中国科学院（CAS）
Overview of phenotypes measured by the high-throughput spike characterization platform (Image by IGDB)
＜関連情報＞
- https://english.cas.cn/newsroom/research_news/life/202509/t20250902_1052639.shtml
- https://www.cell.com/cell-reports/fulltext/S2211-1247(25)00891-5
高スループット形質解析による小麦の穂形態変化のゲノムドライバーの解明 Dissection of genomic drivers of spike morphology changes in wheat by high-throughput phenotyping
Kuocheng Shen ∙ Botao Ye ∙ Xuchang Yu ∙ … ∙ Tingting Wu ∙ Jianhui Wu ∙ Zifeng Guo
Cell Reports Published:August 6, 2025
DOI:https://doi.org/10.1016/j.celrep.2025.116120
Highlights
- The high-throughput phenotyping platform dissects wheat spike morphology
- Differences in wheat spike morphology are attributed to variable allelic combinations
- Wheat breeding breaks the trade-off between spike length and width/thickness
- Wheat breeding gathers desired haplotypes, resulting in bigger spike volume
Summary
Spike morphology is crucial for wheat (Triticum aestivum L.) yield and environmental adaptation. We developed a high-throughput phenotyping platform to dissect spike morphology traits based on 54 traits in 1,359 wheat accessions. These 54 spike morphology traits exhibited clear geographical differences among 306 worldwide accessions and breeding selection trend across different time windows for 1,053 accessions released from 1900 to 2020 in China. Based on geographical distribution and breeding selection of haplotypes, we attribute the differences in spike morphology to variable haplotype combinations. Wheat breeding breaks the trade-off between spike length and width/thickness, resulting in increased spike volume. A large proportion of genomic regions has been identified across wheat varieties and utilized as a fixed group to facilitate the targeted improvement and selection of desirable traits during wheat breeding programs. Overall, we provide a resource for the molecular design of spike morphology to facilitate future wheat breeding.
