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18 results

  1. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 44

    Resistance mechanism of Phytophthora nicotianae to dimethomorph

    MU Wenjun; HU Liwei; SONG Jizhen; GUO Jianhua; XI Jiaqin; XUE Chaoqun
    Key Laboratory of Eco-environment and Leaf Tobacco Quality, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, P.R. China
    Tobacco black shank is an important oomycete disease that can cause serious tobacco yield loss in China. As a new fungicide, dimethomorph, has been used more and more widely to replace metalaxyl to control tobacco black shank. As the emergence of ...
  2. CORESTA Congress, Berlin, 2016, Agronomy/Phytopathology Groups, APPOST 25

    Resistance-risk assessment of Phytophthora nicotianae to dimethomorph and fungicide combination development

    MU Wenjun; XUE Chaoqun; XI Jiaqin; HU Liwei; LIU Fang; SONG Jizhen
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, P.R. China
    Dimethomorph is a carboxylic acid amide (CAA) fungicide with high activity against the tobacco pathogen Phytophthora nicotianae. We investigated the risk that P. nicotianae can develop resistance to dimethomorph and screened the fungicide mixture ...
  3. CORESTA Meeting, Agronomy/Phytopathology, 2013, Brufa di Torgiano, AP 24

    Colonisation of Pseudomonas aeruginosa SXYC15 in tobacco via EGFP

    XI Jiaqin(1); FENG Xiaohu(2); SONG Jizhen(1); WANG Libing(2); ZHAO Tao(2); YIN Qisheng(1); GUO Jianhua(1)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, P.R. China; (2) Fuzhou Branch of Jiangxi Tobacco Corporation, Fuzhou, P.R. China
    Pseudomonas aeruginosa SXYC15 was isolated from fresh leaves of tobacco, which had considerable antagonism to Pseudomonas syringae pv. angulata. The stability of the control effect mainly depends on whether antagonistic microbes could effectively colonise ...
  4. Tobacco Science & Technology, 2012, 3, p. 67-74, ISSN.1002-0861

    Variance analysis of carotenoid and its degradation product contents in flue-cured tobacco of different appearance

    XI Yuanxiao(1,2); LIU Yang(1); LI Feng(1); YANG Jun(1); WANG Xinmin(1); WEI Chunyang(1); SONG Jizhen(1)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China; (2) Shandong Weifang Tobacco Company, Weifang 261061, Shandong, P.R. China
    The contents of carotenoid and its degradation products were determined by HPLC and GC/MS, respectively. The results showed that: 1) The contents of lutein, β-carotene and carotenoid increased with the darkening of leaf color, decreased with the increase ...
  5. Tobacco Science & Technology, 2011, 10, p. 65-69., ISSN.1002-0861

    Development and preliminary application of one-step RT-PCR kit for detection of tobacco CMV

    ZHANG JUN-QI(1); LIU XIANG-BING(2); LUO ZHAO-PENG(1); YANG JUN(1); SONG JI-ZHEN(1); YIN QI-SHENG(1); SONG HAO(2)
    1. Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China; 2. China Tobacco Hunan Industrial Co., Ltd., Changsha 410007, P.R. China
    To detect tobacco CMV quickly and accurately, a pair of specific primers was designed according to the relatively conservative region in the CMV genomic sequence, and enzymes and buffers needed for reverse transcription and PCR were integrated. By ...
  6. Tobacco Science & Technology, 2011, 2, p. 70-74., ISSN.1002-0861

    Comparison of carotenoid and polyphenol contents and smoking quality between different flue-cured tobacco cultivars

    XI YUAN-XIAO; SONG JI-ZHEN; YANG JUN; LIU YANG; GUO WEI-MIN
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China
    The contents of carotenoid and polyphenol in leaves of five flue-cured tobacco cultivars grown in Yunnan in 2009 were quantitatively determined with reverse phase high performance liquid chromatography, and the smoking quality of the tobacco was evaluated ...
  7. Tobacco Science & Technology, 2011, 8, p. 73-78., ISSN.1002-0861

    Effects of maturity of harvested flue-cured tobacco on its polyphenol content and composition

    LIU YANG(1); GAO LI-JUN(2); CAI XIAN-JIE(1); SONG JI-ZHEN(1); YIN QI-SHENG(1); WANG WEI-CHAO(3); ZHANG YAO-XU(4)
    1. Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China; 2. Xuchang Cigarette Factory, China Tobacco Henan Industrial Co., Ltd., Xuchang 461000, Henan, P.R. China; 3. Xiangcheng Branch of Xuchang Tobacco Company, Xiangcheng 461700, Henan, P.R. China; 4. Pingdingshan Tobacco Company, Pingdingshan 467000, Henan, P.R. China
    The polyphenol contents and composition in fresh and cured tobacco leaves harvested at different maturity stages (unripe, physiological mature, technical mature and over-ripe) were studied. The results showed that: 1) The polyphenol content topped at ...
  8. CORESTA Congress, Edinburgh, 2010, AP 07

    Isolation of protein from Spinacia oleracea against tobacco mosaic virus and research on the antiviral mechanism

    JIN Guanghui; YANG Jun; YIN Qisheng; SONG Jizhen; JIN Lifeng; XUE Chaoqun; LUO Chaopeng
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, China
    Tobacco mosaic virus (TMV) is a worldwide-occurring tobacco viral disease and usually results in big losses in tobacco production. How to inhibit TMV infection and replication has become a hotspot in the field of plant virus disease control. Antiviral ...
  9. Tobacco Science & Technology, 2010, 10, p. 48-51., ISSN.1002-0861

    Grey incidence analysis on major appearance traits and smoking quality of flue-cured tobacco

    WEI CHUN-YANG(1); LUO ZHAO-PENG(1); LI FENG(1); LI WEI-GUAN(2); YANG MING-FENG(3); LIANG BAO-DE(4); WANG XIN-MIN(1); SONG JI-ZHEN(1)
    1. Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China; 2. Xiangcheng Branch of Xuchang Tobacco Company, Xiangcheng 461700, Henan, P.R. China; 3. Technology Center of China Tobacco Shandong Industrial Corporation, Qingdao 266101, Shandong, P.R. China
    Based on the evaluation data of appearance and smoking quality of flue-cured tobacco samples from main tobacco growing areas in China from 2004 to 2007, grey incidence analysis was performed. The results showed that for upper leaves, color intensity, leaf ...
  10. Tobacco Science & Technology, 2010, 12, p. 61-65., ISSN.1002-0861

    Classification and evaluation of appearance quality of flue-cured tobacco based on Eigenvector

    WEI CHUN-YANG; LI FENG; ZHANG SHI-XIANG; CAI XIAN-JIE; WANG XIN-MIN; SONG JI-ZHEN
    Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China
    In order to better evaluate the appearance quality of flue-cured tobacco, the Eigenvectors of flue-cured tobacco appearance quality were introduced and the classification method of appearance quality on the basis of the quantified evaluation system of ...