Pathotype Analysis of Magnaporthe oryzae in Luoping and Tengchong of Yunnan Province

doi:10.11924/j.issn.1000-6850.casb15120039

Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (14): 84-89.doi: 10.11924/j.issn.1000-6850.casb15120039

Special Issue: 水稻

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Pathotype Analysis of Magnaporthe oryzae in Luoping and Tengchong of Yunnan Province

Chu Jin^1,2, He Pengfei¹, Zhao Zhenglong¹, Wu Yixin³, He Pengjie¹, He Yueqiu³

(¹Faculty of Plant Protection, Yunnan Agricultural University (YAU), Kunming 650201;²Institute of Plant Protection, Liaoning Academy of Agricultural Sciences, Shenyang 110161;³Faculty of Agronomy and Biotechnology, YAU, Kunming 650201)

Received:2015-12-07 Revised:2016-01-23 Accepted:2016-02-25 Online:2016-05-17 Published:2016-05-17

Abstract

Abstract: To clarify the components of Magnaporthe oryzae in southeastern and western Yunnan Province, 295 single spore isolates collected from the nurseries in Luoping and Tengchong counties in 2012 and 2013 were inoculated to three sets of single-isogenic lines (SILs) including LTH, CO39 and IRBL, with seedling spraying method. The pathotypes were determined. The results showed that 295 isolates could be classified into 79 pathotypes, among which, there were 48 pathotypes with 32 special types in Luoping and 47 pathotypes with 31 special types in Tengchong. There were only 16 pathotypes shared in the two nurseries, accounted for 5.42%. The infected frequencies of the cultivars with Pi-9(t), Pi-2(t) or Pi-12(t) blast-resistance genes were 10.13%, 11.39% and 11.39%, indicating that those genes would be useful in blast-resistant breeding.

Chu Jin,He Pengfei,Zhao Zhenglong,Wu Yixin,He Pengjie and He Yueqiu. Pathotype Analysis of Magnaporthe oryzae in Luoping and Tengchong of Yunnan Province[J]. Chinese Agricultural Science Bulletin, 2016, 32(14): 84-89.

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Pathotype Analysis of Magnaporthe oryzae in Luoping and Tengchong of Yunnan Province

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