1. Genetic Variation of Rice Blast (Pyricularia oryzae) Isolates in Laos
- Author
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Phatsalakone Manivong, Nagao Hayashi, Tadasahi Sato, Phetmanyseng Xangsayasane, Chay Bounphanousay, Viengphone Bounphanousay, Mitsuhiro Obara, Singty Voradeth, Chanthakone Boualaphanh, Phoumi Inthapanya, and Yoshimichi Fukuta
- Subjects
0106 biological sciences ,Genetics ,Pyricularia ,biology ,Virulence ,Plant Science ,Horticulture ,Pathogenicity ,biology.organism_classification ,01 natural sciences ,010602 entomology ,Race (biology) ,Variation (linguistics) ,Genetic variation ,010606 plant biology & botany - Abstract
The pathogenicity of 192 blast isolates collected from regions across the whole of Laos from 2007 to 2009 showed a wide variation in terms of the frequencies of virulence toward differential varieties (DVs) and the susceptible control cultivar Lijiangxintuanheigu. High frequencies of virulence (>50%) were found in the reactions of DVs for Pit, Pia, Pi3, Pi5(t), Pik-s, Piz-t, Pi19(t), and Pi20(t); intermediate values (from 10 to 50%) were found in DVs for Pib, Pii, Pik-m, Pi1, Pik-h, Pik, Pik-p, Pi7(t), Piz-5, Pita (two lines), Pita-2 (two lines), and Pi12(t); and low frequencies (
- Published
- 2020
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