文献类型： 外文期刊

作者： Liu, Yangyang ¹ ; Yu, Rui ² ; Shen, Liping ¹ ; Sun, Mengjing ⁴ ; Peng, Yanchun ⁵ ; Zeng, Qingdong ⁶ ; Shen, Kuocheng ¹ ; Yu, Xuchang ¹ ; Wu, He ¹ ; Ye, Botao ¹ ; Wang, Ziying ¹ ; Sun, Zhiweng ¹ ; Liu, Danning ¹ ; Sun, Xiaohui ⁸ ; Zhang, Zhiliang ⁷ ; Dong, Jiayu ⁷ ; Dong, Jing ⁵ ; Han, Dejun ⁶ ; He, Zhonghu ⁴ ; Hao, Yuanfeng ⁴ ; Wu, Jianhui ² ; Guo, Zifeng ¹ ;

作者机构： 1.Chinese Acad Sci, Key Lab Plant Mol Physiol, Inst Bot, Beijing 100093, Peoples R China

2.Northwest A&F Univ, State Key Lab Crop Stress Resistance & High Effici, Yangling 712100, Shaanxi, Peoples R China

3.China Natl Bot Garden, Beijing, Peoples R China

4.Chinese Acad Agr Sci CAAS, Inst Crop Sci, Beijing 100081, Peoples R China

5.Hubei Acad Agr Sci, Inst Food Crops, Key Lab Crop Mol Breeding, Minist Agr & Rural Affairs, Wuhan, Peoples R China

6.Northwest A&F Univ, State Key Lab Crop Stress Biol Arid Areas, Yangling, Shaanxi, Peoples R China

7.Univ Chinese Acad Sci, Beijing, Peoples R China

8.Yantai Acad Agr Sci, Yantai, Peoples R China

9.Chinese Acad Sci, Innovat Acad Seed Design, Inst Genet & Dev Biol, State Key Lab Plant Cell & Chromosome Engn, Beijing, Peoples R China

10.Co CAAS, Int Maize & Wheat Improvement Ctr CIMMYT, China Off, Beijing, Peoples R China

关键词： adaptive evolution; genetic network; grain yeild; GWAS

期刊名称：PLANT CELL AND ENVIRONMENT （ 影响因子：6.3； 五年影响因子：7.7 ）

ISSN： 0140-7791

年卷期： 2024 年 47 卷 12 期

页码：

收录情况： SCI

摘要： Over the past century, environmental changes have significantly impacted wheat spike morphology, crucial for adaptation and grain yield. However, the changes in wheat spike modifications during this period remain largely unknown. This study examines 16 spike morphology traits in 830 accessions released from 1900 to 2020. It finds that spike weight, grain number per spike (GN), and thousand kernel weight have significantly increased, while spike length has no significant change. The increase in fertile spikelets is due to fewer degenerated spikelets, resulting in a higher GN. Genome-wide association studies identified 49,994 significant SNPs, grouped into 293 genomic regions. The accumulation of favorable alleles in these genomic regions indicates the genetic basis for modification in spike morphology traits. Genetic network analysis of these genomic regions reveals the genetic basis for phenotypic correlations among spike morphology traits. The haplotypes of the identified genomic regions display obvious geographical differentiation in global accessions and environmental adaptation over the past 120 years. In summary, we reveal the genetic basis of adaptive evolution and the interactions of spike morphology, offering valuable resources for the genetic improvement of spike morphology to enhance environmental adaptation. In this study, we investigated the genetic basis of changes in spike morphology during wheat breeding. We identified candidate regions responsible for consistent alterations in spike morphology traits that led to increased yield. Furthermore, we constructed a genetic network of related genomic regions. Our findings unveil the genetic underpinnings of breeding selection and the interplay of spike morphology traits, offering valuable resources for the regulation of spike morphology in wheat.