Article
Agronomy
Yunxiao Zhang, Hui Liu, Guijun Yan
Summary: The study assessed seven pairs of NILs targeting four QTL on wheat chromosome arms and found significant differences in PH and other traits among NIL pairs. SNP and candidate gene information can be useful for marker-assisted selection in breeding programs, and the four targeted QTL are crucial genomic regions controlling agronomic traits.
MOLECULAR BREEDING
(2021)
Article
Agronomy
Zhiqiang Wang, Fangkun Wu, Xudong Chen, Wanlin Zhou, Haoran Shi, Yu Lin, Shuai Hou, Shifan Yu, Hong Zhou, Caixia Li, Yaxi Liu
Summary: The tiller inhibition gene TIN4 was mapped to a 311 kb genomic interval on the wheat chromosome 2DL, regulating tiller growth and number. This study established the foundation for developing a low-tillering ideotype to improve wheat yield potential.
THEORETICAL AND APPLIED GENETICS
(2022)
Article
Plant Sciences
Chunyun Zhou, Hongchun Xiong, Meiyu Fu, Huijun Guo, Linshu Zhao, Yongdun Xie, Jiayu Gu, Shirong Zhao, Yuping Ding, Yuting Li, Xuejun Li, Luxiang Liu
Summary: In this study, a high-density genetic linkage map was constructed using a recombinant inbred line (RIL) population derived from a mutant Rht8-2 and a local wheat variety. Seven stable QTLs for plant height and spike compactness were identified, and Rht8-B1 was confirmed as the causal gene for qPH2B.1. Furthermore, it was found that Rht8-B1 had a lower impact on plant height compared to Rht8-D1. These findings provide important information for marker-assisted selection in wheat breeding.
Article
Plant Sciences
Zhankui Zeng, Cheng Guo, Xuefang Yan, Junqiao Song, Chunping Wang, Xiaoting Xu, Yuanfeng Hao
Summary: Seed vigor is an important trait in wheat breeding, and this study identified multiple quantitative trait loci (QTLs) associated with various seed vigor traits in a doubled haploid population derived from a cross between Yangmai 16 and Zhongmai 895. The QTLs were located on chromosomes 2B, 3D, 4B, 4D, 5A, 5B, 6A, 6B, 6D, 7A, and 7D, explaining significant portions of the phenotypic variances. The study also developed KASP markers for a QTL cluster on chromosome 4D and validated them in a panel of wheat accessions. These findings provide valuable genetic resources for improving seed vigor in wheat breeding programs.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Zhen Wang, Smit Dhakal, Mustafa Cerit, Shichen Wang, Yahya Rauf, Shuhao Yu, Frank Maulana, Wangqi Huang, Joshua D. Anderson, Xue-Feng Ma, Jackie C. Rudd, Amir M. H. Ibrahim, Qingwu Xue, Dirk B. Hays, Amy Bernardo, Paul St. Amand, Guihua Bai, Jason Baker, Shannon Baker, Shuyu Liu
Summary: This study aimed to dissect the quantitative trait loci (QTL) associated with yield components and kernel traits in two wheat cultivars under different environments. The researchers identified 134 QTL regions, including pleiotropic and consistent QTL regions, with three major pleiotropic QTL colocalized with specific genes. Additionally, four consistent QTL were found to explain a significant proportion of phenotypic variation. These findings have implications for marker-assisted selection and QTL map-based cloning in future breeding efforts.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agronomy
Yanhua Xu, Yuzhen Yang, Si Wu, Dongcheng Liu, Yongzhe Ren
Summary: Wheat is a crucial crop, and studying its root traits through QTL analysis can help identify desirable roots for efficient nutrient acquisition. In this study, 142 recombinant inbred lines derived from two wheat varieties were used to analyze QTLs for root traits. The genetic map consisted of 470 SSR markers and covered a significant portion of the wheat genome. Multiple QTLs for root and shoot traits were identified, with varying degrees of phenotypic variation explained. QTLs on specific chromosomes were found to be important for root growth in both topsoil and subsoil conditions.
Article
Plant Sciences
Dongyun Lv, Chuanliang Zhang, Rui Yv, Jianxin Yao, Jianhui Wu, Xiaopeng Song, Juntao Jian, Pengbo Song, Zeyuan Zhang, Dejun Han, Daojie Sun
Summary: Plant height is significantly correlated with grain traits, and this study identified multiple QTLs controlling these traits, including stable QTLs in different environments. Two QTL clusters were observed on chromosomes 4B and 4D.
Article
Agronomy
Chon-Sik Kang, Young-Jun Mo, Kyeong-Min Kim, Kyeong-Hoon Kim, Jae-Buhm Chun, Chul-Soo Park, Seong-Woo Cho
Summary: This study identified several QTLs affecting yield potential in wheat by using a recombinant inbred line population derived from Korean wheat cultivars. Multiple stable QTLs were detected in at least two environments, including those influencing spike length, tiller number, and length of center rachis. Taejoong contributed significantly to the spike length QTLs.
Article
Agriculture, Multidisciplinary
Tian Yu, Yang Lei, Lu Hong-feng, Zhang Bo, Li Yan-fei, Liu Chan, Ge Tian-li, Liu Yu-lin, Han Jia-nan, Li Ying-hui, Qiu Li Juan
Summary: By constructing a high-density genetic map, nine QTLs for plant height in soybean were identified, including three novel loci. Among them, two environmentally stable QTLs played a major role in plant height, explaining a significant proportion of phenotypic variance, and were fine-mapped to specific gene regions.
JOURNAL OF INTEGRATIVE AGRICULTURE
(2022)
Article
Agronomy
Tianheng Ren, Tao Fan, Shulin Chen, Chunsheng Li, Yongyan Chen, Xia Ou, Qing Jiang, Zhenglong Ren, Feiquan Tan, Peigao Luo, Chen Chen, Zhi Li
Summary: In this study, a high-density genetic map was constructed using a recombinant inbred line population, leading to the mapping of numerous QTLs for kernel-related traits in wheat varieties. Additionally, novel QTLs were identified for various traits, and further analysis of QTL clusters and correlations laid the groundwork for fine mapping and cloning of genes in future research.
THEORETICAL AND APPLIED GENETICS
(2021)
Article
Agronomy
Chunhua Zhao, Xijian Liu, Hongwei Liu, Wenchao Kong, Zhuochao Zhao, Shengren Zhang, Saining Wang, Yingzi Chen, Yongzhen Wu, Han Sun, Ran Qin, Fa Cui
Summary: This study narrowed down the location of a major stable QTL for flag leaf width to a 2.5 Mb region and identified two predicated candidate genes. The study characterized the genetic effects of QFlw-5B on yield-related traits and suggested its potential for marker-assisted selection in wheat breeding programs. The findings also provide a basis for the map-based cloning of QFlw-5B.
THEORETICAL AND APPLIED GENETICS
(2022)
Article
Agronomy
Zhongxin Kong, Ruiru Cheng, Haisheng Yan, Haiyun Yuan, Yong Zhang, Guoqiang Li, Haiyan Jia, Shulin Xue, Wenling Zhai, Yang Yuan, Zhengqiang Ma
Summary: Key message KT1 is a novel thickness QTL validated to have major effects on wheat kernel dimensions and weight. It is fine mapped to a narrow interval near the chromosome-5A centromere. KT1, a dominant gene, is associated with thicker kernels and positive correlations with kernel width and weight, while negatively correlated with kernel length. It can be used in breeding for wheat cultivars with round-shaped kernels that improve flour yield.
THEORETICAL AND APPLIED GENETICS
(2022)
Article
Agronomy
Guillermo Donaire, Leonardo S. S. Vanzetti, Maria B. Conde, Carlos Bainotti, Leticia Mir, Lucas Borras, Oswaldo Chicaiza, Marcelo Helguera
Summary: In the last century, wheat breeding programs have consistently increased yield but at the expense of grain protein concentrations. This study identified four genomic regions associated with increases in grain protein content and/or grain yield, providing potential tools for wheat breeding programs to break the negative correlation between these traits.
Article
Plant Sciences
Xinyao He, Gustavo Azzimonti, Mariel Del Rosario Sanchez-Vidana, Silvia A. Pereyra, Carolina Sansaloni, Ana Maria Hernandez-Anguiano, Aakash Chawade, Pawan K. Singh
Summary: This study aimed to investigate the resistance mechanism of Murga wheat and identified a major and stable QTL named Stb16 on chromosome 3DL with broad-spectrum resistance against STB. Additional QTLs with minor effects were also identified on other chromosomes. Murga was found to be the resistant donor for all QTLs except for those on chromosomes 2B and 3A.
Article
Plant Sciences
Manuel Geyer, Volker Mohler, Lorenz Hartl
Summary: In this study, the genetics controlling the deviations in grain yield and protein content in common wheat were explored using quantitative trait locus analysis. The results showed that these traits were controlled by multiple genes, including several candidate genes. The study confirmed the usefulness of using indices to mitigate the negative correlation between yield and quality in breeding.