Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Acta Botanica Boreali-occidentalia Sinica》 2005-02
Add to Favorite Get Latest Update

Effects of Medium Components and pH on Pollen Germination and Tube Growth in Pear (Pyrus pyrifolia)

ZHANG Shao-ling,CHEN Di-xin,KANG Lang,WANG Ling (College of Horticulture, Nanjing Agricultural University, Nanjing 210095,China)  
The effects of medium components and pH on pollen germination and tube growth in pear by cultivating pollens in liquid medium were studieds. The results showed that pollen germination and tube growth were promoted by the components and pH at certain values. Beyond values both pollen germination and tube growth were inhibited. 30 mmol/L MES, 0.01% H_3BO_3, 0.03% CaCl_2·2H_2O, 15% PEG-4000, 5% D-fructose (or 5% sorbitol,10% sucrose), pH 6.5, were optimal for pollen germination and tube growth. In the conditions, pollen germination rate and tube length were 59.2% and 966.3 μm,respectively.
【Fund】: 国家自然科学基金项目 (30270926 );; 高校博士学科点专项科研基金 (20010307012 )
【CateGory Index】: S661.2
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
【References】
Chinese Journal Full-text Database 10 Hits
1 ZHANG Xian-xian1,ZHAO Jing1,LI Xin1,SHEN Xiang1,FU Yu-sheng2(1.College of Horticulture Science and Engineering,Shandong Agricultural University,Taian 271018,China;2.Shandong Wangsheng Landscape Engineering Co.,Ltd.,Jinan 250000,China);Comparison on Pollen Viability of Different Crabapple Varieties (Lines)[J];Shandong Agricultural Sciences;2010-02
2 PENG Hong-li et al (Environmental Management College of China,Qinhuangdao,Hebei 066004);Research on the Pollen Germination and Growth in vitro of Davidia involucrata[J];Journal of Anhui Agricultural Sciences;2008-31
3 DONG Fen-li et al(South China Botanical Garden,Chinese Academy of Science,Guangzhou,Guangdong 510650);Medium Selection for the Pollen Germination in Vitro of Hedychium kwangsiense T.L.Wu & S.J.Chen[J];Journal of Anhui Agricultural Sciences;2009-31
4 FAN Gui-min et al(Key Laboratory for Forest Silviculture and Conservation of the Ministry of Education,Beijing Forestry University,Beijing 100083);Research on Pollen Vitality and Pollination of Pistacia vera L.[J];Journal of Anhui Agricultural Sciences;2011-21
5 QIU Jian-yu,GENG Xing-min,HUANG Bei-li(College of Landscape Architecture,Nanjing Forestry University,Nanjing 210037);Effects of different sugar sources on pollen germination and the pollen tube growth of bulb flowers[J];Journal of Anhui Agricultural University;2012-01
6 GAI Wei-ling1,GAI Shu-peng2(1.College of Agronomy and Plant Protection,Qingdao Agricultural University,Qingdao,Shandong 266109;2.College of Life Science,Qingdao Agricultural University,Qingdao,Shandong 266109);Study of the Pollen Germination in vitro in Tree Peony[J];Northern Horticulture;2010-22
7 TIAN Cui-ting~(1,2);Lü Hong-fei~(1,2);WANG Feng~2;ZHANG Chun-yu~2;LIN Jin-xing~2.1 College of Chemistry and Life Science,Zhejiang Normal University,Jinhua City,321004,P.R.China;2 Institute of Botany,Chinese Academy of Sciences,Beijing,100093,P.R.China.;Effects of medium components on in vitro pollen germination and pollen tube growth of Picea wilsonii Mast.[J];Journal of Beijing Forestry University;2007-01
8 HU Jianbin1, ZHOU Xiongxiang2, GUO Linfeng1 ( 1.College of Forestry and Horticulture, Henan Agricultural University, Zhengzhou 450002; 2.Vgetable Office of Hubei Agricultural Board );Optimization Trial of Conditions for Melon (Cucumis melo) Pollen Germination in Vitro[J];Journal of Changjiang Vegetables;2009-02
9 ZHANG Yan-qing1,LI Xian-ming2,ZHOU Ru-jiu1,LU Bing-she1,JIAO Li-li3,BU Shao-zhen3(1.College of Landscape and Tourism,Agriculture University of Hebei,Baoding 071000,China;2.Forestry Bureau of Shexian,Shexian 056400,China;3.General Advaneed School,Zaoqiang 053100,China);A study on characteristics of pollen germination and storage of pistachio[J];Journal of Agricultural University of Hebei;2007-03
10 WANG Lan-lan YOU Jie YU Hong-qiang (College of Agronomy and Biotechnology,China Agricultural University,Beijing 100094,China);The optimization of culture solution for rose pollen in vitro germination[J];Journal of Agricultural University of Hebei;2008-03
China Proceedings of conference Full-text Database 1 Hits
1 LI Yu-ping,LUO Feng-xia,WANG Chun-yan~* (College of Horticulture,Jinling Institute of Technology,Nanjing 210038,China);Determination of Pollen Vitality of 3 cultivars in Hyacinthus orientalis[A];[C];2011
【Citations】
Chinese Journal Full-text Database 6 Hits
1 ZHANG Shaoling,GAO Fuyong,CHEN Dixin,GU Zhixin(College of Horticulture,Nanjing Agricultural University,Nanjing 210095,China);The effects of plant growth regulating substances on pollen germination and tube gowth in Fengshui pear (Pyrus serotina)[J];Acta Botanica Boreali-occidentalia Sinica;2003-04
2 Guan Junfeng(Department of Horticulture,Hebet Agrotechnical Teachers College,Changli,Hebei Province 066600);Effects of Li~+, Inositol and Ca~(2+) on Apple, Pear and Hawthorn Pollen Germination and Tube Growth[J];JOURNAL OF FRUIT SCIENCE;1998-04
3 Chen Dixin and Zhang Shaoling (College of Horticulture,Nanjing Agricultural Uni versity,Nanjing,Jiangsu210095China);Effects of Polyamines and Polyamine Synthesis In hibitor on in vitro Pollen Germination and Tube Growth in Pears[J];Journal of Fruit Science;2002-06
4 FU Bi (Department of Bilogy, Hainan Normal University, Haikou 571158);Influences of urea,boron and plant growth regulators on the germination and growth of lichee pollen[J];Journal of Yunnan Normal University (Natural Sciences Edition);2001-03
5 Zhang Shaoling 1 and Shin Hiratsuka 2 ( 1Department of Horticulture,Nanjing Agricultural University,Nanjing 210095; 2Faculty of Bioresources,Mie University,Tsu,Japan 514 8507);Effects of the Stylar S glycoproteins on the Pollen Germination and the Tube Growth in Pears( Pyrus serotina Rhed.)in Vitro[J];ACTA HORTICULTURAE SINICA;2000-04
6 SUN Ying, SUN Da-Ye * (Institute of Molecular and Cell Biology, Hebei Normal University, Shijiazhuang 050016, China);Signal Transduction in Pollen Germination and Tube Growth[J];Acta Botanica Sinica;2001-12
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 ZHANG Ying et al (Horticulture Institute of Guangxi Academy of Agricultural Sciences;Research Centre of Grape in South,Nanning,Guangxi 530007);Observation on the Germination and Growth Course of Pollen Tubse of Vitis quinquangularis Rehd[J];Journal of Anhui Agricultural Sciences;2006-21
2 TANG Hong-ming et al(Zhejiang Dongyang Construction Engineering of Gardens Ltd,Dongyang,Zhejiang 322118);Research Progress in Plant Pollen Germination[J];Journal of Anhui Agricultural Sciences;2006-24
3 ZHANG Zhen-ming et al (College of Life Science and Technology,Yancheng Teachers University,Yancheng,Jiangsu 224051);Research on the Germination of Pollens from Different Pear Varieties[J];Journal of Anhui Agricultural Sciences;2009-13
4 YANG Jia-suo et al (Zhuanglang Agriculture and Animal Husbandry Administrative Bureau,Zhuanglang, Gansu 744600);Analysis on Factors Influencing Pollen Germination and Tube Growth of Solanum tuberosum L.in vitro[J];Journal of Anhui Agricultural Sciences;2009-17
5 PAN Hai-fa et al(Institute of Horticulture,Anhui Academy of Agricultural Sciences,Hefei,Anhui 230031);Effects of Different Pollination Treatments on Endogenous Hormones Contents of the Style and Ovary in Dangshansu pear(Pyrus bretshneideri cv.Dangshansu pear)[J];Journal of Anhui Agricultural Sciences;2012-10
6 DU Yu-hu,QI Ying,JIANG Jin-biao,YANG Chun-ling,ZHENG Shuang,LI Yan(Liaoning Agricultural Vocation-Technical College,Yingkou,Liaoning 115009,China);Effects of Sucrose,Boron and Calcium on in Vitro Pollen Germination and Pollen Tube Growth of Prunus triloba Lindl[J];Northern Horticulture;2008-08
7 LV Jin-hai,LIN Hui(Department of Life Science,Huaihua College,Huaihua,Hunan 418008);Effect of Different Factor on Pollen Germination of Huanghua Pear[J];Northern Horticulture;2010-22
8 TIAN Cui-ting~(1,2);Lü Hong-fei~(1,2);WANG Feng~2;ZHANG Chun-yu~2;LIN Jin-xing~2.1 College of Chemistry and Life Science,Zhejiang Normal University,Jinhua City,321004,P.R.China;2 Institute of Botany,Chinese Academy of Sciences,Beijing,100093,P.R.China.;Effects of medium components on in vitro pollen germination and pollen tube growth of Picea wilsonii Mast.[J];Journal of Beijing Forestry University;2007-01
9 HU Jianbin1, ZHOU Xiongxiang2, GUO Linfeng1 ( 1.College of Forestry and Horticulture, Henan Agricultural University, Zhengzhou 450002; 2.Vgetable Office of Hubei Agricultural Board );Optimization Trial of Conditions for Melon (Cucumis melo) Pollen Germination in Vitro[J];Journal of Changjiang Vegetables;2009-02
10 LI Zhi min,LIU Yong jü,WANG Wen jiang,LI Jun shuang(Mountainous Areas Research Institute,Agricultural University of Hebei,Baoding 071001,China);Effects of ploymines on fruit tree development[J];Journal of Agricultural University of Hebei;2003-S1
China Proceedings of conference Full-text Database 3 Hits
1 Wei Biyun, Zhang Shaoling, Mei Zhengming, and Chen Dixin (College of Horticuture , Nanjing Agriculture University, Nanjin 210095);The differences of pollen germination and tube growth between self-and cross-pollination of Prunus mume[A];[C];2002
2 LIU Yu-yan~1 YU Feng-ming~2 (1 Department of Horticulture and Gardening;2 College of Life Science and Technology, Hebei Normal University of Science and Technology,Changli 066600);Study on Pollen Germination Characteristic of Iris ruthenica var. nana[A];[C];2009
3 LI Zhenghong1,ZHANG Yuxing1,GE Huibo2(1.Agricultural University of Heibei,Baoding,071000,China;2.Forestry Bureau of Hebei Province,Shijiazhuang 271122,China);The Effect of Boric Acid or Gibberellin in Vitro and Vivo Pollen Germination of Pear[A];[C];2012
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 Wang Wenmei Li Xinhua Jin Liling Liu Shuyu (Institute for APPlication of Atomic Energy, Shandong Academy of Agricultural Sciences, Jinan, Shandong);STUDY ON THE RADIATION EFFECT OF ~(60)Co GAMMA-RAYS ON POLLEN, OVARY AND ZYGOTE OF WINTER WHEAT[J];Shandong Agricultural Sciences;1990-01
2 SU Xue-he,GAO Guo-qiang,SHI Xiang-yu & ZHU Dou-bei (Institute for Application of Atomic Energy,Shandong Academy of Agricultural Sciences,Jinan 250100);Interspecific distant crossing through irradiating pollen of cotton[J];SHANDONG AGRICULTURAL SCIENCES;2000-02
3 ZONG Hong~1,CHEN Yun-qi~(2*),WANG Xiu-feng~1,GAO Li-min~2(1.College of Horticulture Science and Engineering,Shandong Agricultural University,Taian 271018,China;2.Shandong Academy of Agricultural Sciences,Jinnan 250100,China);Study on the Hormone Composition Regeneration Plant Culture via Mature Embryo of Welsh Onion[J];Shandong Agricultural Sciences;2006-05
4 WANG Yu-xia1,2,WANG Ying1,LI Fang-dong1,2,WEI Xin1,2,DONG Wen-xuan1,2*,(1.College of Horticulture,Shenyang Agricultural University,Shenyang 110161,China;2.Research Institute for Breeding and Physiological Ecology of Frigid Region Fruit Tree,Shenyang 110161,China);Study of Pollen Quantity and Vitality of Hawthorn Cultivars with Different Kernel Percentage[J];Shandong Agricultural Sciences;2008-02
5 Li Xinghua,Sun Yongtang,Jing Liling,Hou Guangyun,Xu Xiangbo & Liu Shuyu (Application of Atomic Energy Institute,Shandong Academy of Agricultural Sciences,Jinan 250100);Wheat Breeding by Irradiation of Pollen in Combination with Sexual Hybridization[J];SHANDONG AGRICULTURAL SCIENCES;1998-01
6 Shi Xiangyu,Gao Guoqiang,Su Xuehe,Zhu Doubei & Chen Xiao (Institute for Application of Atomic Energy, Shandong Academy of Agricultural Sciences, Jinan 250100);Technique of Ovule Culture in vitro Used in Distant Hybridization of Cotton[J];SHANDONG AGRICULTURAL SCIENCES;1999-03
7 WANG Hu 1,HE Jia-qing 1,WU Zhi-chao 2,ZHANG Yu-chuan 2,YAN Rui-wen 3 (1. Ahui University Research & Develop Centre of Konjac Laboratory,Hefei 230039,China; 2.Chenical Depasttrcent of Anhui University,Hefei 230039,China; 3.Center of Analysis and;Determination and analysis of trace elements in Amorphallus konjac and the soil where it growth by ICP-AES[J];Journal of Anhui University(Natural Sciences);2002-03
8 ZHANG Guang-fu,CHEN Rui-bing(College of Life Sciences,Nanjing Normal University,Nanjing 210097,China);Progress in studies on the exotic invasive plant alligator weed Alternanthera philoxeroides(Mart.) Griseb[J];Journal of Anhui University(Natural Sciences);2005-06
9 Li Junhong1 Tian Shengni2 Du Weiwei2 (1 College of Biology and Food Engineering,Hefei University of Technology,Hefei,Anhui,230009;2 College of Life Sciences,Anhui Agricultural University,Anhui,230063);Preliminary Study on the Allelopathy of Alien Erigeron annuus[J];Anhui Agricultural Science Bulletin;2007-17
10 Wang Liying et al.(Agricultural College,Shihezi University,Shihezi 832003,China);Study on the Pollen Storage and Viability of Three Lonicera[J];Anhui Agricultural Science Bulletin;2009-07
China Proceedings of conference Full-text Database 2 Hits
1 Chen Jingshun, Song Jinyao, Dong Cuntan Chen Hu, Zhang Xin-shen, Liu Quanguo( Changli Pomology Institute, Hebei Aoademy of Agricultural and Forestry Sciences, Changli 066600; Department of Horticulture , Hebei Vocaitianal Teacher' s College , Chang - li 066600);Primary Study on the Pollen - Direct - Effects and Its Mechanism in Yali Pear ( Pyrus bretschneideri Rehd. Var. Yali)[A];[C];1999
2 MA Miao, LI Bo ( Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science , Fudan University, Shanghai 200433, China; School of Bioengineering, Shihezi University , Shihezi, Xinjiang 832003, China);ASEXUAL REPRODUCTION POTENTIAL OF SOLIDAGO CANADENSIS[A];[C];2003
【Secondary References】
Chinese Journal Full-text Database 10 Hits
1 ZHANG Xian-xian1,ZHAO Jing1,LI Xin1,SHEN Xiang1,FU Yu-sheng2(1.College of Horticulture Science and Engineering,Shandong Agricultural University,Taian 271018,China;2.Shandong Wangsheng Landscape Engineering Co.,Ltd.,Jinan 250000,China);Comparison on Pollen Viability of Different Crabapple Varieties (Lines)[J];Shandong Agricultural Sciences;2010-02
2 DONG Yan,HAN Tian-tian,WU Man,SHEN Xiang(College of Horticulture Science and Engineering,Shandong Agricultural University,Taian 271018,China);Comparison of Anther Yield and Pollen Viability between Different Efficient Pollination Trees to Apple[J];Shandong Agricultural Sciences;2012-02
3 YANG Jia-suo et al (Zhuanglang Agriculture and Animal Husbandry Administrative Bureau,Zhuanglang, Gansu 744600);Analysis on Factors Influencing Pollen Germination and Tube Growth of Solanum tuberosum L.in vitro[J];Journal of Anhui Agricultural Sciences;2009-17
4 ZHANG Shuang-shuang et al(Key Laboratory of Tree Breeding Engineering of China,Key Laboratory of Flower Genetics and Breeding of the Ministry of Education,Key Laboratory of Tree and Flower Breeding and Bio-engineering of State Forestry Administration,Beijing Forestry University,Beijing,100083);Research on the Section Aigeiros Pollen Viability and Stigma Receptivity for Pollen[J];Journal of Anhui Agricultural Sciences;2010-20
5 HE Zheng-sheng(Jiujiang University,Jiujiang,Jiangxi 332000);Research Progress on Invasive Plant Solidago canadensis[J];Journal of Anhui Agricultural Sciences;2010-26
6 DENG Xin-zhou et al(College of Life Sciences,Guangxi Normal University,Guilin,Guangxi 541004);Effects of Different Culture Medium and Soaking Time on the Pollen Germination Rate of C. oleifera[J];Journal of Anhui Agricultural Sciences;2011-26
7 HE Miao et al(Northeast Forestry University,Harbin,Heilongjiang 150040);Research on the Pollen Germination of Dendranthema indicum var.aromaticum[J];Journal of Anhui Agricultural Sciences;2011-33
8 HE Zheng-sheng et al(Jiujiang University,Jiujiang,Jiangxi 332000);Responses to Light Intensity and Nutrient Supply of Invasive Plant Solidago Canadensis in Early Vegetative Growth Stage[J];Journal of Anhui Agricultural Sciences;2011-33
9 GUO Qing ZHAI Shu-hua WANG De-bin CEN Xiao-jian(Life Science and Technology Department,Kunming University,Kunming Yunnan 650031);The Vitro Germination of Marsdenia Officinalis Pollen[J];;2009-11
10 HUANG Bei-li,GENG Xing-min,HU Feng-rong,LU Jian-guo (School of Landscape Architecture,Nanjing Forestry University,Nanjing 210037);Study on the culture solution for gladiolus pollen vitality test[J];Journal of Anhui Agricultural University;2009-04
China Proceedings of conference Full-text Database 6 Hits
1 LI Yu-ping,LUO Feng-xia,WANG Chun-yan~* (College of Horticulture,Jinling Institute of Technology,Nanjing 210038,China);Determination of Pollen Vitality of 3 cultivars in Hyacinthus orientalis[A];[C];2011
2 LIU Yu-yan~1 YU Feng-ming~2 (1 Department of Horticulture and Gardening;2 College of Life Science and Technology, Hebei Normal University of Science and Technology,Changli 066600);Study on Pollen Germination Characteristic of Iris ruthenica var. nana[A];[C];2009
3 LI Yu-ping,WANG Chun-yan,LUO Feng-xia (Jinling Institute of Technology,210038,Nanjing China.);Study on Interbreed of Hyacinthus orientalis and Culture of Hybrid embryo in vitro[A];[C];2010
4 LIU Yu-yan~1 YU Feng-ming~2 ZHANG Rui~1 LIU Xiao-ning~1 WU Min-hua~1 (1 College of Horticulture Science and Technology;2 College of Life Science and Technology,Hebei Normal University of Science and Technology,Changli 066600);Primary Study of the Influence on Pollen Germination of Chaenomeles lagenaria[A];[C];2010
5 Huang Guihua,Liang Kunnan,Zhou Zaizhi,Ma Huaming,Lin Mingping (Research Institute of Tropical Forestry,CAF,Guangzhou 510520,Guangdong,China);In Vitro Pollen Germination and Pollen Tube Growth of Teak (Tectona grandis L.f.)[A];[C];2009
6 Yu Ciying~1 Li Xiupeng~2 Wu Yueyan~3 Chen Yeping~1 Miao Lingxia~1 Hong Zhongyue~1 (1.Zhoushan Forestry Institute,Zhejiang Dinghai 316000; 2.Ningbo Technology Extension Center for Forestry and Specialty Forest Products, Zhejiang Ningbo 315012;3.Zhejiang Wanli University,Zhejiang Ningbo 315100);Flowering Characteristics and Pollen Viability of Endangered Plant Carpinus putoensis[A];[C];2011
【Secondary Citations】
Chinese Journal Full-text Database 10 Hits
1 Xu Jizhong; Chen Haijiang; Shao Jianzhu; Wang Yanhui (Department of Horticulture, Hebei Agricultural University, Baoding 071001; School of Agronomy, Hebei Agricultural University, Baoding 071001);Effects of Exogenous Polyamines and Their Inhibitor MGBG on the Apple Pollen Germination and Fruit Set[J];JOURNAL OF AGRICULTURAL UNIVERSITY OF HEBEI;1999-04
2 CHENG Jian-hong,TAN Dun-yan,LI Jiang,LI Wen-sheng,HOU Ping,FENG Da-qian ( College of Forestry,Xinjiang Agriculture University,Urumqi 830052,China);Studies of pollination experiment and the growth of pollen tube under fluorescent microscope on almond[J];Acta Botanica Boreali-occidentalia Sinica;2001-05
3 Rao Jingping,Ren Xiaolin and Tong Bin ( Department of Horticulture,Northwestern Agricultural University ,Yangling Shaanxi 712100);REGULATION OF GROWTH AND DEVELOPMENT OF FRUITS BY PLANT GROWTH REGULATOR[J];ACTA BOTANICA BOREALI-OCCIDENTALIA SINICA;1998-01
4 Xu, Rong-yi, Rong-mu Chen and Jing-lu Chen (Zhangzhou Division, FAC) Wang, kun-gua and Zhuang-li Kang (Lunghai Linxia forestry Station);A STUDY ON THE EFFECT OF MICRONUTRIENT BORON APPLICATION IN LITCHI CHINENSIS SONN. TREES[J];;1984-04
5 Zhang Kaitai (Dept.of Horticulture,FAC)Guo Ruzhuo Zhang Zhuhua (Basic Devision,FAC);THE EFFECTS OF PLANT GROWTH REGULATORS ON LITCHI POLLENS GERMINATIVE PERCENTAGE UNDER DIFFERENT TEMPERATURE LEVELS[J];;1989-03
6 ZHONG Xiao hong (College of Plant Science and Technology, HNAU, Changsha 410128,PRC);Physiological Function of Three Polyamines in Shatian Pummelo during Blossom and Fruit Setting[J];JOURNAL OF HUNAN AGRICULTURAL UNIVERSITY;2000-06
7 Ding Zhien (Department of Forest Produce Industry, Anhui Agricultural University\ HeFei 230036);THE MECHANISM OF EMPTY BUNDLE FORMATION IN CHINESE CHESTNUT[J];SCIENTIA SILVAE SINICAE;1999-05
8 Huang Weidong;Han Zhenhai;Liu Su;Xu Xuefeng (College of Agronomy & Crop Science , CAU, Beijing 100094) Feng Guofa (Forestry Station of Zhaogezhuang Town,Shunyi County,Beijing);Effects of Several Plant Growth Regulators on Flowering and Fruiting of Apple[J];Journal of China Agricultural University;1996-03
9 Sun Wenquan ( Department of Horticulture, Nanjing Agricultural University );POLYAMINES IN RELATION TO FLOWERING OF HORTICULTURE CROPS——LITERATURE REVIEW[J];Acta Horticulturae Sinica;1989-03
10 Wang Shiping1,Song Changbing1,LiI Lianchao2,and Zhang Yiming1 (1Horticultural Institute,Ningxia Academy of Agricultural and Forestry Sciences,Yinchuan 750021;2College of Biological Scicence,China Agricultural University, Beijing 100094);Physiological Function of Polyamines during Blossoming and Fruit Setting in Apple[J];Acta Horticulturae Sinica;1996-04
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved