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西瓜种质资源抗根结线虫鉴定及防治研究

果树学报 1989年第1期12卷 33-38页

作者：张学炜钱笑丽刘济伟中国农业科学院郑州果树研究所

1982～1985年对河南郑州地区发生的西瓜根结线虫病作了调查和病原鉴定,结果表明,该病分布十分普遍,西瓜病株率达20％～70％。病原为南方根结线虫(Meloidogyne incognita)、花生根结线虫(Meloidogyne arenaria)爪哇根结线虫(Meloidogyne ... 详细信息

1982～1985年对河南郑州地区发生的西瓜根结线虫病作了调查和病原鉴定,结果表明,该病分布十分普遍,西瓜病株率达20％～70％。病原为南方根结线虫(Meloidogyne incognita)、花生根结线虫(Meloidogyne arenaria)爪哇根结线虫(Meloidogyne javanica)。通过鉴别寄主试验,确认南方根结线虫、花生根结线虫为二号寄主小种;抗病性鉴定表明墨—74抗性最强,克伦生、11253、钢皮、100号、中育1号、伊选次之。並从5种杀虫剂中筛选出可用于大田防治的DD混剂。防治效果达92.1％～100％。

关键词：根结线虫 Meloidogyne 鉴别寄主病原鉴定 incognita 会阴花纹混剂抗病性鉴定大田防治种质资源

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一种基于李群表征的空间后方交会新方法

测绘科学与工程 2019年第5期39卷 28-32页

作者：周瑜胡莘曹锴郎龚辉杨学伟信息工程大学地理空间信息学院河南郑州450001 地理信息工程国家重点实验室陕西西安710054 西安测绘研究所陕西西安710054 西安电子科技大学综合业务网理论及关键技术国家重点实验室陕西西安710071

经典的空间后方交会使用欧拉角或四元数对摄影测量姿态进行表征。基于欧拉角表征的旋转变换存在计算复杂、方向锁定等弱点,四元数表征无法正确反映姿态几何特性,且两者都存在姿态奇异值问题。为解决摄影测量姿态无奇异值表征难题,提升... 详细信息

经典的空间后方交会使用欧拉角或四元数对摄影测量姿态进行表征。基于欧拉角表征的旋转变换存在计算复杂、方向锁定等弱点,四元数表征无法正确反映姿态几何特性,且两者都存在姿态奇异值问题。为解决摄影测量姿态无奇异值表征难题,提升摄影测量平差定位效率,本文首先提出了一种基于李群表征的空间后方交会新方法,其次推导了采用李代数的外方位元素系数矩阵,相较于经典欧拉角和四元数,该算法结构简明清晰、易于实现,最后经模拟和实际数据验证,算法正}有效。

关键词：摄影测量空间后方交会姿态表征李群外方位元素

损毁伏核中央部阻断大鼠吗啡渴求,破坏关联性学习及冲动控制行为(英文)

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中国药物依赖性杂志 2010年第5期19卷 424-424页

作者： yu Peng,WANG Xinsheng,WANG xuewei,CUI Cailian(Neuroscience Research Institute,Department of Neurobiology,School of Basic Medical Sciences,Key Lab for Neuroscience,the Ministry of Education and Ministry of Public Health,Peking University,38 Xueyuan Road,Beijing,100191,PR China)

Drug addiction has become a major public health problem worldwide. Conventional treatments can ameliorate the Abstinence symptoms effectively,but have little to do with relapsing. Recently,ablating the brain regions related to drug addiction permanently through stereotaxic surgery has been proposed and used as a new therapeutic strategy in China. This bold attempt is highly controversial,and major concerns are about the efficacy and side effects of the surgery. In the present study,morphine-induced conditioned place preference (CPP) was established in rats as an animal model to imitate the addicts’ psychological dependence or reflect the craving for the drug of abuse. Direct current (2 mA,7 s) was delivered to ablate sub-regions of bilateral nucleus accumbens (NAc) via a stainless microelectrode,which was similar to the stereotaxic surgery used clinically. To investigate the effect of bilateral NAc core lesions on morphine-induced CPP and the possible side effects on animals’ general physiological function,four behavioral models,Morris water maze,sucrose-induced CPP,open field test and delay discounting task,were applied to assess the rats’ spatial learning ability,associative learning ability,exploratory behavior and impulsive control ability,respectively after the surgical lesions. Results showed that lesions of the NAc core,but not the shell blocked the maintenance of morphine CPP in rats. Although the rats’ spatial learning ability was not significantly affected,their associative learning ability,exploratory behavior and impulsive control ability were obviously impaired by the operations. Our findings indicate that lesion of NAc core blocked the craving for morphine,while impairs associative learning and impulsive control abilities in rats,and that suggests lesion of the NAc core or shell should not be routinely used as a therapeutic strategy for the treatment of opiate addiction.

关键词： conditioned place preference electrolytic lesion impulsive control learning memory morphine nucleus accumbens

A draft sequence of the rice (Oryza sativa ssp. indica) genome

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Chinese Science Bulletin 2001年第23期46卷 1937-1942页

作者： yu Jun, HU Songnian, WANG Jun,LI Songgang WONG Ka-Shu Gane, LIU Bin,DENG Yajun, DAI Li, ZHOU Yan,ZHANG Xiuqing, CAO Mengliang, LIU Jing,SUN Jiandong , TANG Jiabin, CHEN Yanjiong,HUANG Xiaobing, LIN Wei, YE Chen, TONG Wei,CONG Lijuan, GENG Jianing, HAN yujun, LI Lin,LI Wei, HU Guangqiang, HUANG Xiangang,LI Wenjie, LI Jian, LIU Zhanwei, LI Long,LIU Jianping, Ql Qiuhui, LIU Jinsong, LI Li,WANG Xuegang, LU Hong, WU Tingling,ZHU Miao, Nl Peixiang, HAN Hua, DONG Wei,REN Xiaoyu, FENG Xiaoli, GUI Peng,LI Xianran, WANG Hao, XU Xin, ZHAI Wenxue,XU Zhao, ZHANG Jinsong, HE Sijie,ZHANG Jianguo, XU Jichen, ZHANG Kunlin,ZHENG Xianwu, DONG Jianhai, ZENG Wanyong,TAO Lin, CHEN xuewei, HE Jun, LIU Daofeng,TIAN Wei, TIAN Chaoguang, XIA Hongai,LI Gang, GAO Hui, LI Ping, CHEN Wei ,WANG Xudong, ZHANG Yong, HU Jianfei,WANG Jing, LIU Song, YANG Jian,ZHANG Guangyu, XIONG yuqing, LI Zhijie,MAO Long, ZHOU Chengshu, ZHU Zhen,CHEN Runsheng, HAO Bailin,ZHENG Weimou, CHEN Shouyi, QUO Wei,LI Guojie, LIU Siqi, HUANG Guyang,TAO Ming, WANG Jian, ZHU Lihuang,yuAN Longping& YANG HuanmingBeijing Genomics Institute/Center of Genomics & Bioinformatics, Chinese Academy of Sciences, Beijing 101300, China Hangzhou Genomics Institute/Institute of Bioinformatics of Zhejiang University/Key Laboratory of Bioinformatics of Zhejiang Province, Hangzhou 310007, China Institute of Genetics, Chinese Academy of Sciences, Beijing 100101, China National Hybrid Rice R & D Center, Changsha 410125, China Laboratory of Bioinformatics, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China College of Life Sciences, Peking University, Beijing 100871, China Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 1Q0080, China Digital China Ltd., Beijing 100080, China Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080, China Medical College, Xi’an Jiaotong University, Xi’an 710061, ChinaThese authors contributed equally to this work.Corresponding author.Corresponden Beijing Genomics Institute/Center of Genomics & Bioinformatics Chinese Academy of Sciences Beijing China Hangzhou Genomics Institute/Institute of Bioinformatics of Zhejiang University/Key Laboratory of Bioinformatics of Zhejiang Province Hangzhou China College of Life Sciences Peking University Beijing China Medical College Xi’an Jiaotong University Xi’an China Institute of Genetics Chinese Academy of Sciences Beijing China Laboratory of Bioinformatics Institute of Biophysics Chinese Academy of Sciences Beijing China National Hybrid Rice R & D Center Changsha China Institute of Theoretical Physics Chinese Academy of Sciences Beijing China Digital China Ltd. Beijing China Institute of Computing Technology Chinese Academy of Sciences Beijing China

The sequence of the rice genome holds fundamental information for its biology, including physiology, genetics, development, and evolution, as well as information on many beneficial phenotypes of economic significance. Using a "whole genome shotgun" approach, we have pro-duced a draft rice genome sequence of Oryza sativa ssp. in-dica, the major crop rice subspecies in China and many other regions of Asia. The draft genome sequence is constructed from over 4.3 million successful sequencing traces with an accumulative total length of 2214.9 Mb. The initial assembly of the non-redundant sequences reached 409.76 Mb in length, based on 3.30 million successful sequencing traces with a total length of 1797.4 Mb from an indica variant cultivar 93-11, giving an estimated coverage of 95.29% of the rice genome with an average base accuracy of higher than 99%. The coverage of the draft sequence, the randomness of the sequence distribution, and the consistency of BIG-ASSEM-BLER, a custom-designed software package

关键词： rice genome draft sequences.

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