Evaluation of Rice Genotypes for Resistance to Brown Planthopper (Nilaparvata lugens Stål) Populations from the Central Region of Thailand

Authors

  • Tanee Sreewongchai Department of Agronomy, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand.
  • Fisseha Worede Amhara Regional Agricultural Research Institute, Sirinka Research Center, Woldia, Ethiopia.
  • Chalermpol Phumichai Department of Agronomy, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand.
  • Prapa Sripichitt Department of Agronomy, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand.

Keywords:

Brown planthopper, Nilaparvata lugens Stål, resistance, rice

Abstract

Intensive cultivation of rice is believed to be one of the factors responsible for the outbreak of brown planthopper (BPH). An experiment was conducted to study the reaction of 22 rice genotypes to six populations of BPH collected from rice research centers and from farmers’ fields of central Thailand. The results showed that populations of BPH from rice research centers were relatively more virulent than those from farmers’ fields. Cluster analysis using the mean BPH damage score divided the genotypes into three groups. Group I contained 18 susceptible genotypes including the susceptible check TN1. Group II contained two moderately resistant genotypes, IR64 and RD31, while the third group was made up of the resistant checks, Rathu Heenati and Ptb33. Rathu Heenati and Ptb33 could be used as sources of resistance for BPH in central Thailand. However, it is important to study the reaction of more genotypes by using additional BPH populations. The differential response of genotypes to populations of rice research centers and farmers’ fields of the same province also needs further investigation.

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Published

2015-08-31

Issue

Section

Research Article