Investigation on Genetic Characterization of Blast Disease Resistance in Rice Fields: A Case Study of Three Villages in Luang Prabang Province

Abstract

Rice blast (Pyricularia Oryzea) is one of the most important diseases affecting rice worldwide and in Laos. Under favorable environmental conditions, the losses inflicted by this disease are enormous. A sample of nine Pyricularia Oryzea were collected from the rice growing areas of 3 villages in Luang Prabang Province, Laos. To begin the investigation on genetic characterization of blast disease resistance in rice fields, single conidium isolates were inoculated into 15 commercial rice varieties. Results from the research shows that: TDK1, TDK5, TDK11, RD6 and PNG5 were susceptible to 8 blast isolates BMK-001, BMK-002, BMK-003 and BMK-004. BOU001, BPS001, BPS002 and BPS003. In addition, 13 varieties of TDK11 Takiet and RD6 were susceptible to all blast isolates.