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Overall evaluation of resistance capability of different rice varieties to Sogatella furcifera (Hemiptera: Delphacidae) using radar charts

Huang, Yuan, Jiang, Chunxian, Liu, Chong, Liu, Huainian, Yang, Qunfang, Wang, Haijian, Zeng, Wei, Ouyang, Jingqi, Xu, Kaifan, Li, Qing
Euphytica 2019 v.215 no.3 pp. 58
Sogatella furcifera, antibiosis, antixenosis, field experimentation, genotype, insect pests, leaves, oviposition, plant breeding, radar, rice, surveys, survival rate
Plant resistance is a key component of management programs for the planthoppers in rice. Focusing on white-backed planthopper (WBPH, Sogatella furcifera) and a set of resistant and moderately resistant rice varieties (with rice TN1 as the susceptible standard), we measured several indices for each of three crucial components of resistance (tolerance, antixenosis and antibiosis). We evaluated the genotypes in pot experiments in 2016, and investigations into oviposition and population of planthoppers were included. We integrated these various indices and the results of pot experiments into an overall index of resistance using radar charts. In order to verify the previous results, field surveys of the population of planthoppers were performed in 2017. We found that leaf yellowing days were significantly related to resistance grades of rice. TN1 attracted more WBPH than the resistant rice. The survival rate of WBPH that fed on resistant rice was much lower than TN1. Field trials confirmed the validity of the result of pot experiments. The radar chart provided a nice visualization of the resistance characteristics, making easier to see the overall resistance capability of each genotype. It is the first time that this approach is applied to evaluate rice resistance to WBPH. This study provides a method of performing an overall evaluation of rice which may help screen and evaluate kinds of rice varieties in the control of insect pests such as WBPH.