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Analysis of QTLs for yield-related traits in Yuanjiang common wild rice (Oryza rufipogon Griff.)

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Journal of Genetics and Genomics 2010年第2期37卷 147-157页

作者： Qiang Fu Peijiang Zhang Lubin Tan Zuofeng Zhu Dan Ma Yongcai Fu Xinchun Zhan Hongwei Cai Chuanqing Sun State Key Laboratory of Plant Physiology and Biochemistry National Center for Evaluation of Agricultural WiM Plants (Rice) Laboratory of Crop Heterosis and Utilization of Ministry of Education Beijing Key Laboratory of Crop Genetic Improvement Key Laboratory of Crop Genetic Improve- ment and Genome of Ministry of Agriculture Department of Plant Genetics and Breeding China Agricultural University Beijing 100193 China Institute of Rice Research Anhui Academy of Agricultural Sciences Hefei 230031 China

Using an accession of common wild rice （Oryza rufipogon Griff.） collected from Yuanjiang County, Yunnan Province, China, as the donor and an elite cultivar 93-11, widely used in two-line indica hybrid rice production in China, as the recurrent parent, an advanced backcross populations were developed. Through genotyping of 187 SSR markers and investigation of six yield-related traits of two gen- erations （BC4F2 and BC4F4）, a total of 26 QTLs were detected by employing single point analysis and interval mapping in both genera-tions. Of the 26 QTLs, the alleles of 10 （38.5%） QTLs originating from O. rufipogon had shown a beneficial effect for yield-related traits in the 93-11 genetic background. In addition, five QTLs controlling yield and its components were newly identified, indicating that there are potentially novel alleles in Yuanjiang common wild rice. Three regions underling significant QTLs for several yield-related traits were detected on chromosome 1, 7 and 12. The QTL clusters were founded and corresponding agronomic traits of those QTLs showed highly significant correlation, suggesting the pleiotropism or tight linkage. Fine-mapping and cloning of these yield-related QTLs from wild rice would be helpful to elucidating molecular mechanism of rice domestication and rice breeding in the future.

关键词： common wild rice yield-related traits advanced backcross population QTL

Identification of QTLs for yield-related traits in the Recombinant Inbred Line Population Derived from the Cross Between a Synthetic Hexaploid Wheat-Derived Variety Chuanmai 42 and a Chinese Elite Variety Chuannong 16

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Agricultural Sciences in China 2011年第11期10卷 1665-1680页

作者： TANG Yong-lu LI Jun WU Yuan-qi WEI Hui-ting LI Chao-SU YANG Wu-yun CHEN Fang Crop Research Institute Sichuan Academy of Agricultural Sciences Chengdu 610066 P.R.China College of Life Sciences Sichuan University Chengdu 610064 P.R.China Agronomy College Sichuan Agricultural University Ya ＇an 625014 P.R. China

Synthetic hexaploid wheat （SHW） represents a valuable source of new resistances to a range of biotic and abiotic stresses. A recombinant inbred line （RIL） population with 127 recombinant inbred lines derived from a SHW-derived variety Chuanmai 42 crossing with a Chinese spring wheat variety Chuannong 16 was used to map QTLs for agronomic traits including grain yield, grains per square meter, thousand-kernel weight, spikes per square meter, grain number per spike, grains weight per spike, and biomass yield. The population was genotyped using 184 simple-sequence repeat （SSR） markers and 34 sequence-related amplified polymorphism （SRAP） markers. Of 76 QTLs （LOD〉2.5） identified, 42 were found to have a positive effect from Chuanmai 42. The QTL QGy.saas-4D.2 associated with grain yield on chromosome 4D was detected in four of the six environments and the combined analysis, and the mean yield, across six environments, of individuals carrying the Chuanmai 42 allele at this locus was 8.9% higher than that of those lines carrying the Chuannong 16 allele. Seven clusters of the yield-coincident QTLs were detected on 1A, 4A, 3B, 5B, 4D, and 7D.

关键词： yield-related traits quantitative trait loci Chuanmai 42 synthetic hexaploid wheat

Association mapping and domestication analysis to dissect genetic improvement process of upland cotton yield-related traits in China

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Journal of Cotton Research 2021年第2期4卷 126-137页

作者： GUO Chunping PAN Zhenyuan YOU Chunyuan ZHOU Xiaofeng HUANG Cong SHEN Chao ZHAO Ruihai YANG Qingyong ZHU Longfu SHAHZAD Raheel MENG Fande LIN Zhongxu NIE Xinhui Key Laboratory of Oasis Ecology Agricultural of Xinjiang Production and Construction Corps Agricultural CollegeShihezi UniversityShihezi832003XinjiangChina Cotton Research Institute Shihezi Academy of Agriculture ScienceShihezi832011XinjiangChina Cotton Institute Xinjiang Academy of Agriculture and Reclamation ScienceShihezi832000XinjiangChina National Key Laboratory of Crop Genetic Improvement College of Plant Sciences&TechnologyHuazhong Agricultural UniversityWuhan430070HubeiChina Hubei Key Laboratory of Agricultural Bioinformatics College of InformaticsHuazhong Agricultural UniversityWuhan430070HubeiChina Department of Biotechnology Faculty of Science and TechnologyUniversitas Muhammadiyah BandungBandungWest Java40614Indonesia Agricultural Science Research Institute of the 5th Division of Xinjiang Production and Construction Corps Shuanghe833408XinjiangChina

Background: Cotton fiber yield is a complex trait,which can be influenced by multiple agronomic traits.Unravelling the genetic basis of cotton fiber yield-related traits contributes to genetic improvement of cotton.Results: In this study,503 upland cotton varieties covering the four breeding stages(BS1–BS4,1911–2011)in China were used for association mapping and domestication analysis.One hundred and forty SSR markers significantly associated with ten fiber yield-related traits were identified,among which,29 markers showed an increasing trend contribution to cotton yield-related traits from BS1 to BS4,and 26 markers showed decreased trend effect.Four favorable alleles of 9 major loci(R^(2)≥3)were strongly selected during the breeding stages,and the candidate genes of the four strongly selected alleles were predicated according to the gene function annotation and tissue expression data.Conclusions :The study not only uncovers the genetic basis of 10 cotton yield-related traits but also provides genetic evidence for cotton improvement during the cotton breeding process in China.

关键词： Upland cotton Genome wide association study yield-related traits Favorable alleles

Genetic background effect on QTL expression of yield related traits and their interaction with environment in reciprocal introgression lines and recombinant inbred lines of rice

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Genetic background effect on QTL expression of yield related...

Dissection of two QTL clusters underlying yield-related heterosis in the cabbage founder parent 01–20

第十四届全国植物基因组学大会

作者： Xiaoqian Wang Jianlong Xu Institute of Crop Sciences National Key Facility for Crop Gene Resources and Genetic ImprovementChinese Academy of Agricultural Sciences

Effect of genetic background on detection of quantitative trait locus(QTL) and QTL by environment interaction governing yield related traits(filled grain number,total spikelet number,thousand grain weight,panicle numb... 详细信息

关键词： quantitative trait loci genetic background gene×environment interaction reciprocal introgression lines yield-related traits

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Horticultural Plant Journal 2023年第1期9卷 77-88页

作者： Xing Li Honghao Lv Bin Zhang Zhiyuan Fang Limei Yang Mu Zhuang Yumei Liu Zhansheng Li Yong Wang Yangyong Zhang Key Laboratory of Biology and Genetic Improvement of Horticultural Crops Institute of Vegetables and FlowersChinese Academy of Agricultural SciencesMinistry of Agriculture and Rural AffairsBeijingChina

Cabbage has significant heterosis and most commercial cultivars are hybrids.To explore genetic basis of cabbage heterosis and promote cabbage heterosis utilization,we constructed two populations by crossing 100 DH lines derived from a cabbage hybrid 01–20×96–100 with two female parents.Hybrids exhibited different extents of heterosis,the mean value of economic yield was 2.6 times bigger than parents.We identified 66 and 73 QTLs associated with mid-parent heterosis and transgressive heterosis of twelve yield-related traits,respectively.Some QTLs could be detected under the two-year experiment existed in two populations with different testers,showing relatively high phenotypic contribution rate(15.8%–20.0%).Heterosis QTLs exhibited clustered distribution in several cabbage chromosome regions.Two dominant genetic regions,mk300–316 and mk258–268,originated from the elite parent 01–20,exhibited significant genetic effects for yield-related heterosis,which were first identified.Three elite DH lines(D22,D46,D83)harboring these two dominant regions were selected as having strong heterosis in cabbage production.Candidate gene analysis revealed that some genes participating in biosynthetic processes of carbohydrates and some responses to auxin might affect cabbage yield heterosis.QTL identification and genetic dissection of yield-related traits provide new insights into the genetic effects of cabbage heterosis.

关键词： Cabbage yield-related traits Heterosis QTL Genetic analysis New inbred line breeding

qRgls1.06, a major QTL conferring resistance to gray leaf spot disease in maize

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The Crop Journal 2021年第2期9卷 342-350页

作者： Hao Sun Lihong Zhai Feng Teng Zhihong Li Zuxin Zhang National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070HubeiChina Medical College Hubei University of Arts and ScienceXiangyang 441053HubeiChina Hubei Tenglong Seed Co. LtdXiangyang 441100HubeiChina

Gray leaf spot(GLS)caused by Cercospora zeae-maydis and C.zeina is an extremely devastating leaf disease that limits maize production annually.The use of GLS-resistant maize hybrids is the most cost-effective approach for reducing losses.Resistance to GLS is quantitatively inherited in maize(Zea mays L.)and further sources of resistance remain to be analyzed.Here,we detected qRgls1.06,a major quantitative trait locus for GLS resistance in bin 1.06 that explained approximately 55%of the phenotype variance.Fine mapping over 2 consecutive years localized qRgls1.06 to a 2.38-Mb region.Homozygous qRgls1.06^(WGR/WGR) plants in DZ01 background displayed higher GLS resistance and 100-grain weight than DZ01 plants.The GLS responses of several susceptible elite inbred lines were improved by the introduction of qRgls1.06 by marker-assisted backcrossing.Our findings extend the understanding of the genetic basis of resistance to GLS and provide a set of resistant germplasm for genetic improvement of resistance to GLS in maize.

关键词： Fine mapping Marker assisted selection Quantitative trait locus yield-related traits Zea mays

Major Gene Identification and Quantitative Trait Locus Mapping for yieldrelated traits in Upland Cotton(Gossypium hirsutum L.)

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Journal of Integrative Agriculture 2014年第2期13卷 299-309页

作者： XIA Zhe ZHANG Xin LIU Yang-yang JIA Zi-fang ZHAO Hai-hong LI Cheng-qi WANG Qing-lian College of Life Sciences Henan Normal University Key Discipline Open Lab on Crop Molecular Breeding of Henan Institute of Higher Learning/Cotton Research Institute Henan Institute of Science and Technology

Segregation analysis of the mixed genetic model of major gene plus polygene was used to identify the major genes for cotton yield-related traits using six generations P1, P2, F1, B1, B2, and F2 generated from the cross of Baimian 1 x TM-1. In addition to boll size and seed index, the major genes for the other five traits were detected： one each for seed yield, lint percentage, boll number, lint index; and two for lint yield. Quantitative trait locus/loci （QTL） mapping was performed in the F2 and F2：3 populations of above cross through molecular marker technology, and a total of 50 QTL （26 suggestive and 24 significant） for yield-related traits were detected. Four common QTL were discovered： qLP-3b（F2）/qLP-3（F2：3） and qLP-19b （F2）/qLP-19（F2：3） for lint percentage, qBN-17（F2）/qBN-17（F2：3） for boll number, and qBS-26b（F2）/qBS-26（F2：3） for boll size. Especially, qLP- 3b（Fz）/qLP-3（F2：3）, not only had LOD scores 〉3 but also exceeded the permutation threshold （5.13 and 5.29, respectively）, correspondingly explaining 23.47 and 29.55% of phenotypic variation. This QTL should be considered preferentially in marker assisted selection （MAS）. Segregation analysis and QTL mapping could mutually complement and verify, which provides a theoretical basis for genetic improvement of cotton yield-related traits by using major genes （QTL）.

关键词： major gene segregation analysis QTL mapping yield-related traits upland cotton

Association and validation of yield-favored alleles in Chinese cultivars of common wheat(Triticum aestivum L.)

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Association and validation of yield-favored alleles in Chine...