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第十二届全国植物基因组学大会

作者： Philippe Lessard shanghai longping 300 Fenglin RoadShanghai 200032China

Functional genomics is a new field of plant science that will help to improve field crops using marker assisted selection(MAS),and GM technology. Set up by Yuan Long Ping High-Tech Agriculture CO.,LTD and shanghai Institutes for Biological Sciences (SIBS) of Chinese Academy of Sciences(CAS),shanghai longping(SHLP) is a company engaged in agricultural biotechnology research and *** are engaged in new gene cloning,genetic engineering

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Shortened Basal Internodes Encodes a Gibberellin 2-Oxidase and Contributes to Lodging Resistance in Rice

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Molecular Plant 2018年第2期11卷 288-299页

作者： Chang Liu Jinshan Gui Chenjian Fu Hasi Yu Dongliang Song Junhui Shen Peng Qin Xuanming Liu Bin Han Yuanzhu Yang Laigeng Li National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences Shanghai Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 China Yuan longping Agriculture High-Tech Co. Ltd. Hunan 410001 China Hunan University Hunan 410082 China University of the Chinese Academy of Sciences Beijing 100049 China National Center of Plant Gene Research and CAS Center for Excellence in Molecular Plant Sciences Institute of Plant Physiology and EcologyChinese Academy of Sciences Shanghai 200233 China Hunan Ava Seed Research Institute Hunan 410119 China Hunan Engineering Laboratory for Disease and Insect-Resistant Rice Breeding Hunan 410119 China

Breeding semi-dwarf varieties to improve lodging resistance has been proven to be enormously successful in increasing grain yield since the advent of the ＂green revolution.＂ However, the breeding of the majority of semi-dwarf rice varieties in Asia has been dependent mainly on genetic introduction of the mutant alleles of SD1, which encodes a gibberellin （GA） 20-oxidase, OsGA20ox2, for catalyzing GA biosynthesis. Here, we report a new rice lodging-resistance gene, Shortened Basal lnternodes （SBI）, which encodes a gibberellin 2- oxidase and specifically controls the elongation of culm basal internodes through deactivating GA activity. SBI is predominantly expressed in culm basal internodes. Genetic analyses indicate that SBI is a semidominant gene affecting rice height and lodging resistance. SBI allelic variants display different activities and are associated with the height of rice varieties. Breeding with higher activity of the SBI allele generates new rice varieties with improved lodging resistance and increased yield. The discovery of the SB! provides a desirable gene resource for producing semi-dwarf rice phenotypes and offers an effective strategy for breeding rice varieties with enhanced lodging resistance and high yield.

关键词： Shortened Basal Internodes gibberellin activity lodging resistance yield rice

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Rail Flatness and Verticality Measurement System Based on Ruler Model

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Wuhan University Journal of Natural Sciences 2020年第6期25卷 547-554页

作者： YANG Haima ZOU Xinglin ZHOU Zhendong ZHANG Dawei YANG Yutuan LI Jun QIAN longping JIANG Shenghua School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China shanghai Ruinu Machinery Crop Shanghai 200120China

Currently,the manual contact rail measurement that was basically adopted in China has low detection efficiency,poor accuracy and poor *** order to improve the function of the system,we propose a non-contact measurement method based on the flatness and verticality ruler *** flatness measurement model was built by employing the string measurement *** addition,the verticality measurement model was built by the dihedral method to measure the rail *** extracting curvature information of feature points,in this system,each laser sensor is used to collect rail profile curves.A large number of three-dimensional point clouds data are generated by the unit quaternion method of coordinate transformation,and the contour curves of the characteristic points of the four laser sensors are matched with the corresponding point sets one to one,and the rail contour splicing is finally *** experimental results show that this method has better measurement effect compared with the traditional manual measurement method.

关键词： laser profiler point cloud splicing verticality measurement flatness measurement rail quality evaluation ruler model non-contact

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