Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (9): 1865-1869.DOI: 10.3969/j.issn.1000-2561.2020.09.020

• Plant Protection & Bio-safety • Previous Articles     Next Articles

Analysis on Difference of Nutrient Content in Leaf Tissue of Resistant and Sensitive Cassava Varieties Before and After Damage to Tetranychus cinnabarinus

ZHANG Zhe1,2,CHEN Qing2,*(),LIANG Xiao2,WU Chunling2,CHEN Qian2,Zhang Yindong1   

  1. 1. College of Tropical Crops, Hainan University, Haikou, Hainan 570228, China
    2. Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences / Key Laboratory of Pests Comprehensive Governance for Tropical Crops, Ministry of Agriculture and Rural Affairs / Hainan Engineering Research Center for Biological Control of Tropical Crops Diseases and Insect Pests / Hainan Key Laboratory for Monitoring and Control of Tropical Agricultural Pests, Haikou, Hainan 571101, China
  • Received:2019-10-12 Revised:2019-12-19 Online:2020-09-25 Published:2020-10-16
  • Contact: CHEN Qing


The difference of nutrient contents in leaf tissues of resistant and susceptible standard cassava varieties before and after being damaged by Tetranychus cinnabarinus was analyzed by spectrophotometry. The content of free amino acids (FAA), soluble sugars (WSS), soluble nitrogen (SN) in the leaves of C1115, a standard cassava cultivar for mite resistance, significantly decreased damaged by T. cinnabarinus. The content of FAA, WSS and SN 1, 4 and 8 days after damaged by T. cinnabarinus was, 69.69%, 69.29% and 63.42%, 73.16%, 73.71% and 72.75%, 45.97%, 46.21% and 46.13%, respectively (P<0.05) of that before damaged. S/N increased significantly, which was 159.15%, 159.46% and 157.83% 1, 4 and 8 days after damaged by T. cinnabarinus respectively (P<0.05) of that before damaged, while the content of free proline (Pro) did not change significantly. There was no significant difference in the content of FAA, WSS between the leaves of the mite-susceptible reference standard cassava variety BRA900 after damaged for 1, 4 and 8 days. The content of SN increased significantly, which was 148.50%, 148.73% and 148.77% 1, 4 and 8 days after damaged by Tetranychus cinnabarinus respectively of that before damaged. S/N decreased significantly, which was 62.61%, 61.48% and 61.92% of that before damaged. The content of free proline (Pro) increased significantly, which was 373.82%, 367.33% and 362.61% of that before damaged.

Key words: Tetranychus cinnabarinus, mite-resistant reference standard cassava cultivar C1115, mite-susceptible reference standard cassava cultivar BRA900, nutrients, difference analysis

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