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《Hybrid Rice》 2006-02
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Research Progress on Two-line Super Hybrid Rice Breeding in China

WANG Wei-ping~(1,2),WU xiao-jin~2(1.College of Agronomy,Hunan Agricultural University,Changsha,Hunan 410128,China;2.China National Hybrid Rice Research and Development Center,Changsha,Hunan 410125,China)  
The latest progresses in the theory and practice of two-line super hybrid rice breeding in China were summarized.The main direction of attack and strategy for two-line super hybrid rice breeding were put forward, in which the innovation of germplasms and genetic improvement of the parents by molecular breeding technology were expected to be key in two-line super hybrid rice breeding in the near future.
【CateGory Index】: S511
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【References】
Chinese Journal Full-text Database 8 Hits
1 DONG Xi-hua et al(Anqing Institute of Agricultural Sciences,Anqing,Anhui 246003);Analysis of the Yield Characteristics and Plant-leaf Types in Super Hybrid Rice Combinations[J];Journal of Anhui Agricultural Sciences;2007-36
2 XIE Li-ping(Rice Research Institute,Guangxi Academy of Agricultural Sciences,Nanning 530007,China);Prospects and advancement in super hybrid rice breeding in China[J];Guangxi Agricultural Sciences;2009-11
3 ZHANG Yun-hua1,QIAN Li-sheng1,2,WANG Rong-fu1*(1.College of Life Science,Anhui Agricultural University,Hefei 230036,Anhui,China; 2.Anhui Science and Technology University,Fengyang 233100,Anhui,China);Adaptation to Chilling Temperature and High Light of Super-hybrid Rice(Oryza sativa L.) Liangyoupeijiu and Its Parents[J];Acta Laser Biology Sinica;2008-01
4 QIU Zhen-guo1,2,CHEN Xiong-hui2*,WANG Peng2, PENG Hai-feng3,WAN Bang-hui2 (1.School of Computer Science and Engineering,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China;2 College of Agriculture,South China Agricultural University,Guangzhou 510642,China;3 College of Life Science,South China Agricultural University,Guangzhou 510642,China);Preliminary Studies on Outcrossing Rate in Rice CMS Lines[J];Acta Agriculturae Universitatis Jiangxiensis;2012-01
5 ZHANG Fan1,XIAO Xiao1,LIU Aai-min2,ZHANG Hai-qing1;Advances and Prospects of Production Rechnology for Rice Core Seed Belonging to Dual-purpose Genic Male Sterile Line[J];Seed;2008-10
6 ;Meteorological Analysis on Multiplication of Thermo-sensitive Genetic Male Sterile (TGMS) Lines in Rice in Hainan Province[J];Hybrid Rice;2007-04
7 Xie Chenglin1,Zhang Zujian2,Pan Meihong2,Zhang Jufang1(1Agric Bureau of Yangzhou,Jiangsu Province,Yangzhou 225009;2Key Laboratory for Crop Genetics and Physiology of Jiangsu Province,Agricultural College,Yangzhou University,Yangzhou 225009);Study on the Characteristics of Biomass Production and the Relationship to Yield in Super Hybrid Rice[J];Chinese Agricultural Science Bulletin;2007-09
8 LI Shi-ling;WU Wu-zhang;;Analysis on Combining Ability of Main Agronomic Characters in Rice Dual-type Sterile Line 276 S and 276 A[J];Seed;2014-02
【Citations】
Chinese Journal Full-text Database 10 Hits
1 CHEN You-ding (Rice Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640,China);Current research progress and Prospect of super rice in Guangdong province[J];Guangdong Agricultural Science;2005-01
2 WANG Feng, LIU Wu-ge, LIAO Yi-long, LI Shu-guang, LIU Zhen-rong, HUANG De-juan, PENG Hui-pu (Rice Research Institute,Guangdong Academy of Agricultural Sciences, Guangzhou 510640,China);Selection of Two-line Super Hybrid Rice Yue-za 122[J];Guangdong Agricultural Science;2005-01
3 LIAO Yi-long, WANG Feng, HUANG De-juan, LI Shu-guang, LIU Wu-ge, LIU Zheng-rong, PENG Hui-pu (Rice Research Institute, Guangdong Academy of Agricultural Science, Guangzhou 510640, China);Selection and Application of Super Hybrid Rice Yue-za 889[J];Guangdong Agricultural Science;2005-01
4 Zeng Hanlai Zhang Ziguo Li Yuzhen Yuan Shengchao Zhang Duanpin (Huazhong Agricultural University, Wuhan 430070);STUDIES ON THE THERMO-SENSITIVE PERIOD OF FERTILITY ALTERATION IN PHOTOPERIOD-SENSITIVE GENIC MALE STERILE RICE[J];Journal of Huazhong Agricultural;1993-05
5 LI Xing- run1,YANG Shi- yuan1,YUAN Long- ping2 ,GOU Ming- qi2 ,YI Hua- qi2 (1 .College of Life Science,Central China Normal University,Wuhan4 30 0 79; 2 .Hunan Hybrid Rice Research Certer,Changsha4 1 0 1 2 5);Recombining type-a series yw photo-thermo sensitive genic male sterils lines breeding[J];Journal of Central China Normal University(Natural Sciences);2001-01
6 1,2,3 CHEN Zhongming, 2ZOU Jiangshi, 3ZHU Lihuang, 2LI Hebiao, 2GU Fulin and 1GU Minghong 1 Department of Agronomy, Agricultural College, Yanzhou University, Yanzhou 225009; 2 Institute of Food Crops, Jiangsu Academy o;Identification of RFLP Markers Linked with Wide Compatibility Gene in Variety Aus373 of Ecotype Aus of Rice by Using Bulked Segregant Analysis[J];JIANGSU JOURNAL OF AGRICULTURAL SCIENCES;1996-04
7 Zhou Kaida et al(Rice Research Institute, Sidhuan Agricultural University/Wengjiang, Sichuan, China 611130);THE BREEDING OF SUBSPECIFIC HEAVY EAR HYBRID RICE-EXPLORATION ABOUT SUPER-HIGH YIELD BREEDING OF HYBRID RICE[J];Journal of Sichuan Agricultural University;1995-04
8 ZHOU Jiang-ju 1,CHEN Liang-bi 2,LONG Yue-sheng 2 (1.Qiandongnan Teachers College, Kaili 556000, Guizhou, China; 2.College of Life Sciences, Hunan Normal Uniuersity, Changsha 410081,Hunan, China);Cytological Investigation of Pollen Development of TGMS Rice with Double Low Critical Temperature under Low Temperature[J];Life Science Research;2001-02
9 XU Meng-Liang, CHEN Liang-Bi, ZHOU Guang-Qia, LIANG Man-Zhong (College of Life Science, Hu'nan Normal University, Changsha 410081,China).;Temperature Effects on Fertility of Rice TGMS Line Between 96-5-2S with Double Low Critical Temperature Values and Peiai 64S[J];Acta Ecologica Sinica;2002-04
10 Xue Guangxing Zhao Jianzhong (Institute of Crop Breeding and Cultivation,CAAS,Beijing);A Preliminary Study on the Critical-Daylength Evoking the Photoperiodic Sensitive Male Sterility of Rice and Their Responses to Other Environmental Factors[J];Acta Agronomica Sinica;1990-02
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 MA Zheng,HUO Er-wei,LU Zhao-cheng,XU Shi-ku(Xinyang Agricultural Scientific Research Institute,Xinyang 464000,China);Effect of Main Characters on Yield of Hybrid Rice[J];Shandong Agricultural Sciences;2006-03
2 CHEN He-yun1,2,CAO Dong-dong1,2,ZHENG Xue-qiang1, CHEN Shan-yu1,RUAN Xiao-li2,RUAN Guan-hai2(1.Institute of Crops and Nuclear Technology Utilization,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China; 2.Zhejiang Agricultural Seed Industry Co.,Ltd.,Hangzhou 310021,China);Effects of Different Soaking Treatments on Germination and Seedling Formation of Hybrid Rice[J];Shandong Agricultural Sciences;2012-03
3 Xu Kenong;Li Chengquan;Luo Yanchang;Compatibility of the parents of intersubspecies hybrid rice in two or three-lines[J];Journal of Anhui Agricultural Sciences;1991-03
4 (I The effect of different cultural measure to 65002 on growth druation and yield)Wu Shuang et al(Rice Research Institute,Anhui Academy of Agricultural Sciences,Hefei230031);Studies on Cultural Practice for Two-line Medium Indica Hybrid Rice Combinatio-65002[J];JOURNAL OF ANHUI AGRICULTURAL SCIENCES;1999-01
5 Zhang Peijiang et al (Anhui Academy of Agricultural Sciences, Hefei 230031);Studies on the Breeding Way of Medium Japonica Hybrid Rice Combination between Sub subspecies with the Super high Yield[J];JOURNAL OF ANHUI AGRICULTURAL SCIENCES;1999-04
6 Luo Zhixiang et al (Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031);Analysis of the Key Point of Medium Indica Hybrid Rice Breeding for High Yield[J];JOURNAL OF ANHUI AGRICULTURAL SCIENCES;2000-05
7 Li Zefu et al (Key Lab of Rice Genetics and Heredity, Anhui Academy of Agricultural Sciencs Hefei 230031);Types and Genetic Mechanisms of Plant Male Sterility[J];Journal of Anhui Agricultural Sciences;2000-06
8 Yuan Qin et al (Crop Breeding and Cultivation Research Institute,Shanghai Academy of Agricultural Sciences,Shanghai 201106);Breeding and Application of New Japonica Hybrid Rice Variety-Shenyou No.1[J];Journal of Anhui Agricultural Sciences;2002-05
9 Du Shiyun et al (Rice Research Institute, AAAS, Hefei 230031);Effects of Low Temperature on the Fertility of PTGMS Rice Line[J];Journal of Anhui Agricultural Sciences;2003-02
10 Wang Hui et al (Introduction and Breeding Center, Anhui Seed Company, Hefei 230051);Mechanism of Sterility Expression Instability of Two-line Indica Rice Male Sterile Line in Anhui Province[J];Journal of Anhui Agricultural Sciences;2003-04
China Proceedings of conference Full-text Database 10 Hits
1 Ren Guangjun;Lu Xianjun;Gao Fangyuan;Zhen Jiaguo;Chen Cangsang Sichuan Academy of Agricultural Sciences,Chengdu,610066;Strategies on super Thai-rice varieties' breeding in China[A];[C];2004
2 Ye Xinfu;Jiang Jiahuang;Lu libin;He Qin Rice & Wheat Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350019;Study on the panicle characters of several large panicle hybrid rice combinations[A];[C];2004
3 ZENG Hanlai;ZHANG Danpin;XIE Guosheng National Key Laboratory of Crop Genetic Improvement,Huazhong Agricultural University,Wuhan 430070,P.R. China;Exploration into the counteracts to security application of male lines in two-line hybrid rice production[A];[C];2004
4 CHEN You-ding ZHANG Xu HUANG Nong-rong HUANG Qiu-mei Rice Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510640 WAN Bang-hui Agricultural College,Huanan Agricultural University,Guangzhou 510640;Studies on the Dynamic Plant Type Structue of A Two-Line Super Hybrid Rice Yueza 122[A];[C];2005
5 JIANG Ling XIAO Yin-hui State Key Laboratory of Crop Genetics and Germplasm Enhancement,Nanjing Agricultural University,Nanjing 210095,China YU Chuan-yuan Jiangxi Academy of Agricultural Sciences,Nanchang 330200,China WAN Jian-min Crop Science Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081,China;Combining ability of yield-component traits in 10 indica chromosome segments heterozygous with japonica counterparts in japonica genome background[A];[C];2005
6 RUAN Ren-chao CHEN Hui-cha YOU Jun-mei JIN Tao-ye ZHANG Zai-xing YANG Yus-hun (Institute of Rice,Guizhou Academy of Agricultural Sciences,Guizhou Guiyang 550006,China);Collection,conservation,assessment and utilization on rice germplasm in Guizhou[A];[C];2005
7 DENG Qi-yun~1 YUAN Long-ping~1 CAI Yi-dong~2 CHEN Li-yun~2 1.China National Hybrid Rice Research & Development Center,Hunan Changsha 410125,China; 2.Hunan Agriculture University,Hunan Changsha 410128,China;Morphological advantages of model plant type in super hybrid rice[A];[C];2005
8 TANG Wen-bang CHEN Li-yun~* XIAO Ying-hui LIU Guo-hua DENG Hua-bing (Institute of Rice Ressearch,HNAU,Changsha 410128,China);Breeding and utilization of dual-purpose genic male sterile rice C815s[A];[C];2007
9 HUANG Qun-ce ZHAO Shuai-peng (Provincial Key Laboratory of Iom Beam Bio-engineering,Zhengzhou University,Zhengzhou 450052,China);Future strategy of heavy ion beam mediated technique in rice genetic and improvement[A];[C];2007
10 HUANG Qun-ce~1 LI Yu-feng~2 1.Key Laboratory of Ion Beam Bioengineering,Zhengzhou University,Zhengzhou 450052,China; 2.Key Laboratory of Ion Beam Bioengineering,Inner Mongolia University,Huhehaote 010021,China;Charachers expression on autotetraploid rice with twin-embryo seedling via ion beam implantation[A];[C];2007
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 Li Li et al (Rice Research Institute,Anhui Academy of Agricultural Sciences,Hefei,230031);Comparison among Rice Genotypes from Different Place by Using RAPD and SSR Marker Analysis[J];JOURNAL OF ANHUI AGRICULTURAL SCIENCES;2000-02
2 Zhang Peijiang et al (Anhui Academy of Agricultural Sciences, Key Laboratory of Rice Genetics & Breeding Ministry of Agricultural, The P. R. China, Hefei 230031);Genetic Distance Detected with RAPD Markers among Rice Cultivars (Oryza sativa L.) and its Relation to Heterosis[J];Journal of Anhui Agricultural Sciences;2000-06
3 Li Zefu et al (Key Lab of Rice Genetics and Heredity, Anhui Academy of Agricultural Sciencs Hefei 230031);Types and Genetic Mechanisms of Plant Male Sterility[J];Journal of Anhui Agricultural Sciences;2000-06
4 Ye Yongyin et al (Bijie Institute of Agricultural,Bijie,Guizhou 551700);Effect of Grown in Middle Colony Structure on the Yield and Yield Components of Rice Variety[J];Journal of Anhui Agricultural Sciences;2003-01
5 Zhao Hua et al (Department of Biological Science and Technology, Nantong Normal College,Nantong,Jiangsu 226007);Study Advances of Compatible Solutes and Metabolic Engineering for Stress Tolerance[J];Journal of Anhui Agricultural Sciences;2004-02
6 QIU Zhen-guo(College of Computer Science and Engineering,Zhongkai University of Agriculture and Technology,Guangzhou,Guangdong 510225);Research Progress and Application of Photo-thermo Sensitive Genic Male Sterile Rice[J];Journal of Anhui Agricultural Sciences;2006-20
7 Zhang Peijiang et al (Rice Research Institute,Anhui Academy of Agricultural Sciences,Hefei 230031);Study on the Heterosis and Combining Ability of Hybrid Rice between Japonica and Javanica[J];Journal of Anhui Agricultural Sciences;1997-04
8 Wu Wenge et al (Rice Research Institute of Anhui Academy of Agricultrual Sciences,Hefei 230031);Study on Rice Growth Characteristics under Dry-land Cultivation and lts Culture Technique[J];JOURNAL OF ANHUI AGRICULTURAL SCIENCES;1998-03
9 ZHANG Yunhua1,WANG Rongfu1,CHEN Bingsong2, YU Jianglong1,QIAN Lisheng1,SHA Sha3 (1.College of Life Science, Anhui Agricultural University,Hefei 230036; 2.Institute of Atomic Energy for Application in Agriculture,Jiangsu Academy of Agricultural Sciences;3.College of Life Science,Nanjing Normal University);Light Energy Conversion Efficiency and Assimilate Distribution of Indica-Japonica Subspecies Hybrid Rice Liangyoupeijiu at Late Stage[J];Journal of Anhui Agricultural University;2003-03
10 ZHANG Lin-qing~1,MA Ai-jing~2,ZHANG Ya-jie~3 (1. Department of Agronomy and Food,Huaiyin Institute of Technology, Huaian 223001; 2.Agricultural Bureau of Huaian City of Jiangsu Province, Huaian 223001; 3.Department of Agronomy,Agricultural Colloge, Yangzhou University,Yangzhou 225009);Composition of LAI and Stems and Tillers and Their Relationship in Early Stage of High-yielding Rice Population[J];Journal of Anhui Agricultural University;2004-03
【Secondary References】
Chinese Journal Full-text Database 10 Hits
1 WANG Xue-hui et al(Anqing Institute of Agriculture Science of Anhui Province,Anqing,Anhui 246003);Study on Yield Characters and Features of Dry Matter Accumulation of One-season High Yield Rice in Yangtze River[J];Journal of Anhui Agricultural Sciences;2009-27
2 CHEN Yi-hong et al(Tobacco Institute,Anhui Academy of Agricultural Sciences,Hefei,Anhui 230031);Relationship of Chlorophyll Fluorescence Parameter and Variety Drought Resistance in Sweet Potato[J];Journal of Anhui Agricultural Sciences;2009-36
3 CHEN Xiao-jun et al(Ningxia Key Laboratory for Agricultural Biotechnology,Yinchuan,Ningxia 750002);Indica-japonica Component Analysis on Ningjing28 Based on SSR Molecular Marking[J];Journal of Anhui Agricultural Sciences;2011-08
4 ZHAO Hongwei1,GAO Yang1,2,LIU Hualong1,YANG Liang1,GANG Shuang1,ZANG Jiaxiang1(1.College of Agriculture,Northeast Agricultural University,Harbin 150030,China;2.Rice Research Institute,Heilongjiang Academy of Land Reclamation Sciences,Jiamusi Heilongjiang 154007,China);Research on canopy characteristics of heading stage about japonica super rice Songjing9 in cold region[J];Journal of Northeast Agricultural University;2012-04
5 WU Wen-xiang et al(Fine Seed Multiplication Farm of Feidong County in Anhui Province,Feidong,Anhui 231600);Study on High-yield Multiplication Techniques of Indica TGMS Rice Xuan 69S in Winter in Hainan Province[J];Horticulture & Seed;2011-04
6 SU Xue-jun,CHEN Cai-hong,LIANG Man-ling(Rice Research Institute,Guangxi Academy of Agricultural Sciences,Nanning 530007,China);Discussions on rice breeding objectives and variety approval methods in Guangxi[J];Guangxi Agricultural Sciences;2010-10
7 CHEN Ying,QIN Yan-chun,(Southeastern Guangxi Branch,Guangxi Academy of Agricultural Sciences/Yulin Institiute of Agricultural Sciences,Yulin 537000,China);Present status and prospect of super-rice research and utilization in Guangxi[J];Guangdong Agricultural Sciences;2013-09
8 ZHANG Ji-xin et al(Agricultural Technology Promotion Center in Qichun County,Hubei Province,Qichun,Hubei 435300);Preliminary Discussion on Rice Indica Change to Japonica in Eastern Hubei[J];Journal of Anhui Agricultural Sciences;2013-09
9 LI Haibin1, LI Xunshi1, YANG Peixin1, WANG Changlong1, LUO Jifeng1, SU Chuzhi2(1. Jieyang Vocational & Technical College,Jieyang 522000,China; 2. Agriculture Bureau,Jieyang 522010,China);The Progress of Genetic Research on the Number of Branches per Panicle in Rice[J];Journal of Hainan Normal University(Natural Science);2009-02
10 QIU Bing-yu1,XIONG Yu-zhen1,XIONG Huan-hua2(1.Rice Research Institute,Jiangxi Academy of Agricultural Sciences,Nanchang 330200,China;2.Jiangxi Academy of Agricultural Sciences,Nanchang 330200,China);Analysis on Yield Components of "Ganwanxian 39" and Discussion on Its Yield-increasing Approach[J];Acta Agriculturae Jiangxi;2010-09
【Secondary Citations】
Chinese Journal Full-text Database 10 Hits
1 Li Chengquan(Rice Research Institute,Anhui Academy of Agricultural Sciences,Hefei 230031);Rice Breeding for Super High Yield[J];JOURNAL OF ANHUI AGRICULTURAL SCIENCES;1998-02
2 CaiJunmai~1 Xiao Chenghe~1 Zhou Yuanchang~1 Li Weiming~2~1Dept.of Agronomy;~2Institute of Genetics and Crop Breeding,FAC;A Preliminary Report on the Sensitive Period of Pollen Fertility Alternation in Male Sterile 5460 Indica Rice[J];;1990-04
3 CHEN Zhi xiong, LIANG Kang jing, LIN Wen xiong, CHEN Dong mei, LIANG Yi yuan, GUO Yu chun, LI Ya juan (College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China);Genetic on characteristic of tolerance to photooxidation in rice[J];Journal of Fujian Agricultural University(Natural Science);2002-01
4 Li Weiming;Chen Qifeng; Qi Jianmin;Pan Runsen; Jiang Shuye; Lin Guanglin;Ji Biaojun; Lin Lihui;Wu Weiren;Zhou Yuanchang;Tang Dinghong;(Institute of Genetics and Crop Breding)(Department of Agronomy, FAU, Fuzhou 350002);Comment on the Strategy and Procedure for Breeding of Photoperiod Sensitive Male Sterile Line in indica Rice[J];JOURNAL OF FUJIAN AGRICULTURAL UNIVERSITY;1995-04
5 YOU Jun mei, RUAN Ren chao, CHEN Hui cha, YANG Yu shun, JIN Tao ye(Institute of Rice, Guizhou Academy of Agricultural Sciences, Guiyang 550006, CHINA);Analysis and Evaluation on Cold Tolerance for Rice Germplasm Resources[J];GUIZHOU AGRICULTURAL SCIENCES;2000-03
6 Deng Guofu (Rice Research Institute, Guangxi Academy of Agric.Sci.,44 Xixiangtang Road,Nanning,Guangxi,530007);Synchronous Studies on the Sterility Expressin of the Photoperiod and Temperature Sensitive Genic Male sterile Lines of Rice[J];GUANGXI SCIENCES;1997-01
7 Hu Xueying Wan Banghui (Department of Agronomy);STUDY ON THE GENETIC RELATIONSHIPS BETWEEN PHOTOPERIOD-TEMPERATURE SENSITIVE GENIC MALE STERILITY GENES AND ISOZYME GENES AND ITS LINKAGE MEASUREMENT IN RICE (Oryza sativa)[J];Journal of South China Agricultural University;1991-01
8 Liao Yilong; Wan Banghui(Institute of Rice Research, Guangdong Academy of Agric. Sci., Guangzhou,510640)( Dept. of Agronomy, South China Agric. Univ.);The Inheritance of Photo-Thermo Sensitive Genic Male Steility in Indica Rice(Oryza sativa L.subsp. indica)[J];JOURNAL OF SOUTH CHINA AGRICULTURAL UNIVERSITY;1999-04
9 CHEN Xiong hui 1, WAN Bang hui 1, LU Yan peng 1, PENG Hai feng 2 , LIANG Ke qin 1, ZHAO Jing 1 (1 Dept. of Agronomy, South China Agric. Univ., Guangzhou 510642 ,China; 2 College of Biotech., South China Agric. Univ., Guangzhou 510642,China);Studies on Outcrossing Seedy Potentialities of Photo Thermo Sensitive Genic Male Sterile Rice[J];Journal of South China Agricultural University;2001-01
10 Wan Banghui; Deng Guofu(Dept.of Agronomy,South China Agr.Unir.,Guangzhou,510642);OBSERVATION ON INDIVIDUAL FERTILITY OF THE PHOTOPERIOD-TEMPERATURE SENSITIVE GENIC MALE STERILE LINES OF RICE[J];JOURNAL OF SOUTH CHINA AGRICULTURAL UNIVERSITY;1995-01
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