Article
Multidisciplinary Sciences
Guan Li, Yichen Cheng, Man Yin, Jinyu Yang, Jiezheng Ying, Changlan Zhu
Summary: This study identified QTLs related to panicle traits in rice, with most QTLs clustered on chromosomes 1, 2, 3, 6, and 7. The results contribute to marker-assisted breeding and provide a basis for further research and improvement of rice varieties.
Article
Plant Sciences
Sanjeev Kumar Dhungana, Ji-Hee Park, Jae-Hyeon Oh, Beom-Kyu Kang, Jeong-Hyun Seo, Jung-Sook Sung, Hong-Sik Kim, Sang-Ouk Shin, In-Youl Baek, Chan-Sik Jung
Summary: This study identified 10 QTLs for drought tolerance in soybean using a recombinant inbred line population developed from a cross between a drought-tolerant and a susceptible cultivar. The QTLs were found on seven chromosomes, with some overlapping or located close to previously reported related QTLs and/or potential candidate genes. These QTLs and closely linked markers could be used in marker-assisted selection to accelerate breeding for drought tolerance in soybean.
Article
Microbiology
Abdelraheem Abdelraheem, Yi Zhu, Jinfa Zhang
Summary: This study identified significant genotypic variations for FOV4 resistance in 163 recombinant inbred lines (RILs) of Pima cotton. Five and four quantitative trait loci (QTL) on six chromosomes were detected in two replicated tests, with three QTL in common between the two tests. The heritability estimate for FOV4 resistance was 0.65, indicating a considerable genetic contribution to the phenotypic variation.
Article
Agronomy
Yiwei Kang, Miao Zhang, Yue Zhang, Weixun Wu, Pao Xue, Xiaodeng Zhan, Liyong Cao, Shihua Cheng, Yingxin Zhang
Summary: In this study, the genetic basis of grain shape in a high-yielding hybrid rice variety was investigated using a set of recombinant inbred sister lines (RISLs) in four different environments. A total of 91 medium/minor-effect QTL were detected, with 3 new QTL identified. A QTL cluster was found to be consistent across all environments, and subsequent candidate gene analysis identified potential genes for further cloning, laying the foundation for high-yield breeding in rice.
Article
Plant Sciences
Pao Xue, Yu-yu Chen, Xiao-xia Wen, Bei-fang Wang, Qin-qin Yang, Ke Gong, Yi-wei Kang, Lian-ping Sun, Ping Yu, Li-yong Cao, Ying-xin Zhang, Xiao-deng Zhan, Shi-hua Cheng
Summary: This study focused on small-effect quantitative trait loci (QTLs) related to grain size in rice. By developing residual heterozygous populations and conducting genotyping and phenotyping, two genetically linked small-effect QTLs (qGS7.1 and qTGW7.2b) were mapped and candidate genes were identified. The study also revealed the impact of these QTLs on cell expansion, leading to changes in grain width. In addition, a QTL (qTGW7.2b) was identified to significantly affect grain length and width, but had little effect on grain weight.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Jianing You, Hang Liu, Surong Wang, Wei Luo, Lulu Gou, Huaping Tang, Yang Mu, Mei Deng, Qiantao Jiang, Guoyue Chen, Pengfei Qi, Yuanying Peng, Liwei Tang, Ahsan Habib, Yuming Wei, Youliang Zheng, Xiujin Lan, Jian Ma
Summary: The study identified QTL for spike density in wheat, providing a genetic basis for optimizing spike structure. Major and stable QTL were discovered, along with analyses of QTL x environment effects and epistatic interactions for spike density. Pyramiding analysis revealed additive effects between specific QTL, and correlations with agronomic traits such as spike length and kernel length were observed. Several genes related to spike development within major or stable QTL intervals were predicted. Overall, the research broadened the genetic basis of spike density and identified QTL with potential applications in modern wheat breeding.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Jing Wu, Lili Mao, Jincai Tao, Xiuxiu Wang, Haijun Zhang, Ming Xin, Yongqi Shang, Yanan Zhang, Guihua Zhang, Zhongting Zhao, Yiming Wang, Mingshuo Cui, Liming Wei, Xianliang Song, Xuezhen Sun
Summary: This study used a genetic map and phenotype data to analyze the QTL of plant height in cotton, identifying several stable and unconditional QTL and revealing the dynamic expression characteristics of genes related to plant height development. Additionally, through functional annotation and transcriptome analysis, candidate genes potentially involved in plant height development were predicted.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Virginia W. Mwape, Kelvin H. P. Khoo, Kefei Chen, Yuphin Khentry, Toby E. Newman, Mark C. Derbyshire, Diane E. Mather, Lars G. Kamphuis
Summary: This study investigates the inheritance of resistance to Sclerotinia stem rot in chickpea. Four quantitative trait loci associated with the disease response were identified, which may be involved in various processes, including phenylpropanoid biosynthesis, plant-pathogen interaction, and plant hormone signal transduction. The findings of this study are important for marker-assisted selection in chickpea breeding.
FUNCTIONAL PLANT BIOLOGY
(2022)
Article
Plant Sciences
Su-Kui Jin, Li-Na Xu, Qing-Qing Yang, Ming-Qiu Zhang, Shui-Lian Wang, Ruo-An Wang, Tao Tao, Lian-Min Hong, Qian-Qian Guo, Shu-Wen Jia, Tao Song, Yu-Jia Leng, Xiu-Ling Cai, Ji-Ping Gao
Summary: In this study, high-resolution QTL mapping was conducted to identify the genetic regions responsible for rice grain quality traits. A total of 15 QTLs were identified, including one overlapping with previously reported QTLs and the others being novel. These findings will facilitate the fine mapping and pyramiding of these QTLs, leading to genetic improvement of rice grain quality.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Wenfeng Pei, Jikun Song, Wenkui Wang, Jianjiang Ma, Bing Jia, Luyao Wu, Man Wu, Quanjia Chen, Qin Qin, Haiyong Zhu, Chengcheng Hu, Hai Lei, Xuefei Gao, Haijun Hu, Yu Zhang, Jinfa Zhang, Jiwen Yu, Yanying Qu
Summary: In this study, 25 MIC QTLs were identified in Gossypium barbadense using a population of 250 backcross inbred lines (BILs) and a high-density genetic map. Two stable MIC QTLs were discovered, along with 8 candidate genes with differential expression. This research provides valuable insights for improving MIC in cotton breeding.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Agronomy
So-Myeong Lee, Nkulu Rolly Kabange, Ju-Won Kang, Youngho Kwon, Jin-Kyung Cha, Hyeonjin Park, Ki-Won Oh, Jeonghwan Seo, Hee-Jong Koh, Jong-Hee Lee
Summary: In this study, QTLs controlling grain filling in rice were investigated using KASP markers in a DH population derived from a cross between indica and japonica varieties. Three significant QTLs associated with grain filling were identified, and genes associated with diverse biological processes and molecular functions were found. Genes such as MYB, WRKY60, and OsSh1 played a key role in controlling grain filling under early cultivation conditions.
Article
Plant Sciences
Xiaoling Wang, Xia Li, Xin Luo, Shusheng Tang, Ting Wu, Zhiquan Wang, Zhiqin Peng, Qiyu Xia, Chuanyuan Yu, Yulong Xiao
Summary: In this study, 54 QTLs for grain shape were identified using 33 SSSLs and statistical genetics methods. Among them, 23 showed significant positive additive genetic effects, including some novel QTLs, such as qTGW4-(1,2), qTGW10-2, and qTGW10-3. Additionally, 26 HQTLs for grain shape were discovered, with 18 of them exhibiting significant positive dominant genetic effects. These findings provide valuable insights for improving grain yield and quality in rice breeding.
Article
Agronomy
Haisheng Yan, Guoqiang Li, Jinxing Shi, ShunShun Tian, Xiaoqiu Zhang, Rui Cheng, Xin Wang, Yang Yuan, Shouyang Cao, Jiyang Zhou, Zhongxin Kong, Haiyan Jia, Zhengqiang Ma
Summary: The elite wheat cultivar Yangmai 158 (Y158) in China has stable resistance to Fusarium head blight (FHB), with six identified QTL associated with better resistance, including one stably expressed QTL for type I resistance and one stably expressed QTL for type II resistance. Genetic variations in plant height and flowering time were also studied, but no QTL associated with FHB resistance were found among them. The SNP markers flanking the resistance QTL have been converted into breeder-friendly PCR-based markers for practical applications in breeding programs.
THEORETICAL AND APPLIED GENETICS
(2021)
Article
Biochemistry & Molecular Biology
Long Chen, Li Liu, Ziwei Li, Yudong Zhang, Manjit S. Kang, Yunyue Wang, Xingming Fan
Summary: This study identified 11 GLS-resistant QTL and discovered a new consensus QTL with the largest effect in chromosome bin 3.05. Further gene annotation revealed four candidate genes potentially related to GLS resistance. The combination of RIL populations and GBS-based high-density genetic maps provided a new resistance source for maize breeding programs.
MOLECULAR BIOLOGY REPORTS
(2021)
Article
Plant Sciences
Hui Hu, Ruoyu Gao, Liping He, Famao Liang, Zhixin Li, Junying Xu, Longwei Yang, Chongrong Wang, Zhangyong Liu, Jianlong Xu, Xianjin Qiu
Summary: This study focused on the ratooning ability of rice and identified several main-effect QTLs, including qRA5 on chromosome 5, which has pleiotropic effects on multiple ratooning-related traits. The results provide important insights into the genetic basis of rice ratooning ability and offer valuable gene resources for breeding high-yield ratoon rice varieties.