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Origin of the Chinese cultivated rice(Oryza sativa L.)

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Chinese Science Bulletin 1999年第4期44卷 295-304页

作者： xiangkun wang Chuanqing Sun Hongwei Cai Juzhong Zhang Chinese Agr Univ Beijing 100094 Peoples R China Henan Archeolog Inst Zhengzhou 450004 Peoples R China

The following new research progresses are summarized and discussed, which are related to 3 main problems in origin of rice cultivation in China: 1. new hypothesis of rice cultivation in Chinamiddle Yangtze River and upper Huai River regions; 2. primitive cultivated rice and the strengthen period of domestication; 3. genetic diversity centers of cultivated rice in China; 4. China and South Asia might be two independent systems of origin and differentiation of Asian cultivated rice; 5. morphological classification of common wild rice of China; 6. primitive progenitor of common wild rice; 7. direct progenitor of cultivated rice; 8. present or not the annual wild rice in China; 9. differentiation or not the common wild rice into Indica and Japonica; 10. origin and differentiation of Indica and Japonica.

关键词： rice cultivation of China homeland of cultivated rice progenitor of cultivated rice origin of Indica and Japonica.

Identification and classification of subspecies of Asian cultivated rice and their hybrids

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Chinese Science Bulletin 1998年第22期43卷 1864-1872页

作者： xiangkun wang Renhua Li Chuanqing Sun Zichao Li Hongwei Cai Xinli Sun China Agr Univ Beijing 100094 Peoples R China

Having reviewed the major classification systems proposed by various scholars across the world, it is found that \%indica\% and \%japonica\% under \%***\% L. are two major directions thoroughly differentiated from the Asian cultivated rice, forming the framework of the classification structure. A system with \%indica\% and \%japonica\% as the only two subspecies is therefore *** are various ways to determine the indica_japonica identity of hybrid rice, but the "combined morphological trait index"(CMT index) method is more efficient and easier to handle, although the isozyme analysis, molecular marker analysis and grain quality assay methods are also feasible.

关键词： Asian cultivated rice subspecies intersubspecific hybrids identification classification.

Rice transformation with a senescence-inhibition chimeric gene

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Chinese Science Bulletin 1998年第21期43卷 1810-1815页

作者： Yongcai Fu Yueyun Ding Xinfang Liu Chuanqin Sun Souyun Cao Dongjiang wang Sijie He xiangkun wang Liangcai Li Wenzhong Tian Chinese Acad Sci Genet Inst Beijing 100101 Peoples R China China Agr Univ Beijing 100094 Peoples R China

A senescence-inhibition chimeric gene containing the specific promoter of SAG 12 and IPT gene was transferred into rice with the biolistic method. Results of PCR, Dot blotting and Southern blotting indicated that the chimeric gene had been integrated into rice genome. Analyses of GUS activity and cytokinin content in transgenic plants of rice and the observation of T 1 generation plant at grain formation stage indicated that the foreign gene was expressed.

关键词： rice specific promoter IPT gene senescence-inhibition biolistic transformation.

Identification and mapping of genes for improving yield from Chinese common wild rice (*** Griff.) using advanced backcross QTL analysis

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Chinese Science Bulletin 2002年第18期47卷 1533-1537页

作者： Dejun Li Chuanqing Sun Yongcai Fu Cheng Li Zuofeng Zhu Liang Chen Hongwei Cai xiangkun wang China Agr Univ Dept Genet & Plant Breeding Beijing 100094 Peoples R China

To identify useful genes from wild rice which have been lost or weakened in cultivated rice has become more and more important for modern breeding strategy. In this study, a BC4 population derived from 94W1, an accession of common wild rice (Oryza rufipogon Griff.) from Dongxiang in Jiangxi Province of China, as the donor, and a high-yielding Indica cultivar (O. sativa L.), 'Guichao 2', as the recipient, was used to identify quantitative trait loci (QTL) associated with yield and its components. Based on the analysis for the genotype of BC4F1 population with 87 SSR markers distributed throughout the genome and investigation of the plant height, yield and yield components of BC4F2, a total of 52 QTLs, were detected. Of 7 QTLs associated with grain yield per plant, 2 QTLs on chromosome 2 and chromosome 11 for grain yield, explaining 16% and 11% of the phenotypic variance respectively, were identified. The alleles from Dongxiang common wild rice in those two loci could increase the yield of 'Guichao 2' by

关键词： common wild rice yield yield components mapping AB-QTL.

Genetic diversity of rice cultivars (Oryza sativa L.) in China and the temporal trends in recent fifty years

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Chinese Science Bulletin 2006年第6期51卷 681-688页

作者： QI Yonawen ZHANG Dongling ZHANG Hongliang wang Meixing SUN Junli WEI Xinghua QIU Zongen TANG Shengxiang CAO Yongsheng wang xiangkun LI Zichao Key Laboratory of Crop Genomics and Genetic Improvement of Min- istry of Agriculture and Beijing Key Laboratory of Crop Genetic Improvement China Agricultural University Beijing 100094 China China National Rice Research Institute Hangzhou 310006 China Institute of Crop Science Chinese Academy of Agricultural ScienceBeijing 100081 China

To understand geographical distribution of the genetic diversity of rice cultivars {Oryza sativa L.) and its trends in recent fifty years in China, 453 ’ accessions were analyzed by 36 microsatellites loci and 42 phenotypic traits. Results revealed that the genetic diversity by SSRs is highly consistent with that by phenotypic traits and the genetic diversity of indica cultivars was higher than that of japonica cultivars; the genetic diversity of cultivars declined from 1950s to 1980s and then increased greatly; among the six rice ecological zones (REZs), genetic diversity of REZTl was the highest and those of REZV and REZVT were the lowest at both DNA and phenotypic level. Jiangsu and Jiangxi provinces in the middle and lower reaches of Yangtze River and Sichuan province in southwest of China were the areas with the highest genetic diversity. Breeders in REZV which is an important japonica rice area but with very low genetic diversity should explore more gene resources to widen the genetic backgrounds of cultivars.

关键词：中国水稻种植遗传多样性微卫星标记表型

Genetic structure and diversity of Oryza sativa L. in Guizhou,China

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Chinese Science Bulletin 2007年第3期52卷 343-351页

作者： ZHANG DongLing ZHANG HongLiang WEI XingHua QI YongWen wang Meixing SUN JunLi DING Li TANG ShengXiang QIU Zong'En CAO YongSheng wang xiangkun LI ZiChao Key Laboratory of Crop Genomics and Genetic Improvement of Ministry of Agriculture Key Laboratory of Crop Heterosis and Utilizition of Ministry of Education and Beijing Laboratory of Crop Genetic Improvement China Agricultural University Beijing 100094 China China National Rice Research Institute Hangzhou 310006 China Institute of Crop Science Chinese Academy of Agricuiturel Science Beijing 100081 China

Preserving many kinds of rice resources and rich variations, Guizhou Province is one of the districts with the highest genetic diversity of cultivated rice (Oryza sativa L.) in China. In the current research, genetic diversity and structure of 537 accessions of cultivated rice from Guizhou were studied using 36 microsatellite markers and 39 phenotypic characters. The results showed that the model-based genetic structure was the same as genetic-distance-based one using SSRs but somewhat different from the documented classification (mainly based on phenotype) of two subspecies. The accessions being classified into indica by phenotype but japonica by genetic structure were much more than that being classified into japonica by phenotype but indica by genetic structure. Like Ding Ying’s taxonomic sys- tem of cultivated rice, the subspecific differentiation was the most distinct differentiation within culti- vated rice. But the differentiation within indica or japonica population was different: japonica presented clearer differentiation between soil-watery ecotypes than indica, and indica presented clearer differen- tiation between seasonal ecotypes than japonica. Cultivated rices in Guizhou revealed high genetic diversity at both DNA and phenotypic levels. Possessing the highest genetic diversity and all the nec- essary conditions as a center of genetic diversity, region Southwestern of Guizhou was suggested as the center of genetic diversity of O. sativa L. from Guizhou.

关键词：贵州水稻遗传结构遗传多态性表型特征

美国稻与籼稻和粳稻杂交配合力及遗传参数研究

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中国农业大学学报 1999年第1期4卷 49-55页

作者：李自超王象坤中国农业大学植物遗传育种系

以13个美国水稻品种为母本分别与籼稻、粳稻杂交配制了6组p×q不完全双列杂交试验，研究了美国稻的8个性状的一般配合力、特殊配合力、遗传力和显性度等遗传参数。结果表明：同一美国品种在A×H和A×K（不同组合类型）间各性状的配合力... 详细信息

以13个美国水稻品种为母本分别与籼稻、粳稻杂交配制了6组p×q不完全双列杂交试验，研究了美国稻的8个性状的一般配合力、特殊配合力、遗传力和显性度等遗传参数。结果表明：同一美国品种在A×H和A×K（不同组合类型）间各性状的配合力及遗传参数均有一定的差异，不同美国品种在同一组合类型中也有一定的差异。

关键词：水稻美国稻配合力遗传参数杂交

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我国大中学生道德推脱水平的变迁及宏观成因

心理学报 2024年第7期56卷 859-875页

作者：王祥坤辛自强侯友内蒙古师范大学心理学院呼和浩特011517 中国人民大学心理学系北京100872

道德推脱是指个体脱离道德自我调节的认知倾向,它往往是在为不道德行为的发生寻找借口。以往研究主要在个体水平上考察道德推脱的成因和后果,很少关注它的历史变迁趋势及其宏观成因。本研究对以Bandura和Caprara等人的道德推脱量表为工... 详细信息

道德推脱是指个体脱离道德自我调节的认知倾向,它往往是在为不道德行为的发生寻找借口。以往研究主要在个体水平上考察道德推脱的成因和后果,很少关注它的历史变迁趋势及其宏观成因。本研究对以Bandura和Caprara等人的道德推脱量表为工具的已有研究进行两项横断历史元分析,分别考查中学生和大学生群体道德推脱水平的变迁趋势及其与反映社会个体化水平和正义水平的宏观因素的关系。研究1发现,在2010至2021年间,我国中学生道德推脱水平呈现逐年下降趋势;研究2发现,在2008至2020年间,我国大学生道德推脱水平也呈现逐年下降趋势。两项研究中,社会个体化水平(市场化水平、城镇化水平和离婚率与结婚率之比)和社会正义水平(现行有效立法量)的上升趋势均能显著负向预测我国大中学生道德推脱水平的下降趋势。综上,近10年来我国大中学生道德推脱水平呈逐年下降趋势,这可能与社会个体化水平(强调个体对自身行为的自主责任)和社会正义水平(对行为更多的外部约束)上升有关。

关键词：道德推脱个体化社会正义大中学生社会变迁横断历史元分析

Identification and mapping of quantitative trait loci controlling cold-tolerance of Chinese common wild rice (O. rufipogon Griff.) at booting to flowering stages

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Chinese Science Bulletin 2003年第19期48卷 2068-2071页

作者： LIU Fengxia, SUN Chuanqing, TAN Lubin, FU Yongcai, LI Dejun & wang xiangkun Department of Plant Genetics and Breeding, China Agricultural University, National Key Laboratory of Agrobiology, Key Laboratory of Crop Genetic Improvement and Genome of the Ministry of Agriculture, Beijing 100094, China Department of Plant Genetics and Breeding China Agricultural University Beijing China National Key Laboratory of Agrobiology Key Laboratory of Crop Genetic Improvement and Genome of the Ministry of Agriculture Beijing China

An advanced backcross population of rice was used to identify the quantitative trait locus (QTL) controlling the cold-tolerance at booting to flowering stages. The recipient, Guichao 2 (GC2), was a commercial Indica rice; the donor Dongxiang common wild rice, was an accession of common wild rice (DXCWR, Oryza rufipogon Griff.). Three QTLs for cold-tolerance were detected on chromosomes 1, 6 and 11. Two of them coming from DXCWR could enhance the cold-tolerance of the backcross progenies. Moreover, one sterility QTL that could reduce the seed set rate of the backcross progenies by 78% was mapped on chromosome 5.

关键词：耐寒性水稻开花期播种设备回交杂种 QTL分析数量特点轨迹