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Journal of Tea Science ›› 2022, Vol. 42 ›› Issue (5): 689-704.doi: 10.13305/j.cnki.jts.2022.05.007

• Research Paper • Previous Articles     Next Articles

Screening of Tea Germplasm Resistant to Matsumurasca onukii and Dendrothrips minowai Priesner and Analysis of Resistance-related Factors

SUN Yue1,2, WU Jun1,2, WEI Chaoling3, LIU Mengyue1,2,4, GAO Chenxi1,2,4, ZHANG Lingzhi1,2,4, CAO Shixian5, YU Shuntian5, JIN Shan1,*, SUN Weijiang1,2,4,*   

  1. 1. College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    2. Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    3. Anhui Agricultural University, Hefei 230036, China;
    4. Engineering Technology and Research Center of Fujian Tea Industry, Fuzhou 350002, China;
    5. Wuyi Star Tea Industrial Company Limited, Wuyishan 354301, China
  • Received:2022-03-07 Revised:2022-07-06 Online:2022-10-15 Published:2022-10-28

Abstract: The resistance of different tea cultivars against Matsumurasca onukii and Dendrothrips minowai Priesner was explored to provide a scientific basis for the breeding and promotion of insect resistant tea cultivars. Taking 11 tea cultivars (Zijuan, Shuixian, Meizhan, Baijiguan, Ruixiang, Qilan, Huangguanyin, Baimudan, Huangyuanyin, Dahongpao and Huangguanyin) as the test materials, the field population was investigated by five-point sampling method. Through investigation of field population density and tea plant morphological characteristics, determination of leaf tissue structure and detection of chemical composition, the relationship among physical properties, chemical components and insect resistance of tea plants was analyzed. The results show that 11 tea cultivars could be divided into 4 categories according to their resistance to M. onukii. category Ⅰ: Zijuan, insect-susceptible (S), category Ⅱ: Meizhan, Huangdan, Qilan, Shuixian, Baimudan, middle susceptible (MS), category Ⅲ: Ruixiang, Dahongpao, Huang guanyin, Huangmeigui, middle resistant (MR), category Ⅳ: Baijiguan, resistant (R). According to the strength of resistance to D. minowai Priesner, it can also be divided into 4 categories, category Ⅰ: Huangmeigui, insect-susceptible (S), category Ⅱ: Ruixiang, Baijiguan, moderate sensitivity (MS), category Ⅲ: Huang Guanyin, Qilan, middle resistant (MR), category Ⅳ: Baimudan, Huangdan, Dahongpao, Meizhan, Zijuan, Shuixian, resistant (R). Combined with correlation analysis, the total number of M. onukii was highly significantly and positively correlated with the anthocyanin content and GCG content of 11 tea cultivars (P<0.01), and significantly and positively correlated with upper cuticle thickness/leaf thickness and lower cuticle thickness/leaf thickness (P<0.05). However, it was significantly and negatively correlated with free amino acids, palisade tissue thickness, upper epidermis thickness and upper epidermis thickness/leaf thickness (P<0.05). There was a significantly negative correlation between leaf length and the total number of D. minowai Priesner (P<0.05), and the total number of M. onukii was significantly and negatively correlated with the total number of D. minowai Priesner (P<0.05). After comprehensive evaluation, the tea cultivars of Dahongpao and Huangguanyin have certain resistance to M. onukii and D. minowai Priesner, which are worthy of promotion. Meanwhile, there was a phenomenon that M. onukii and D. minowai Priesner alternately damage the tea plants in the same period.

Key words: tea plant, Matsumurasca onukii, Dendrothrips minowai Priesner, resistance mechanism, germplasm screening

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