CHARACTERISING THE PATHOGENICITY DIVERSITY OF USTILAGINOIDEA VIRENS IN HYBRID RICE IN CHINA

CHARACTERISING THE PATHOGENICITY DIVERSITY OF USTILAGINOIDEA VIRENS IN HYBRID RICE IN CHINA

Fifty nine isolates of Ustilaginoidea virens, the cause of false smut of rice (Oryza sativa L.), were obtained from 46 rice hybrids in 14 counties in Sichuan, China during a survey conducted in 2006. Their pathogenicity was tested by inoculation on 3 rice hybrids, Gangyou182, Gangy-ou94-11 and Yixia...

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Veröffentlicht in:Journal of plant pathology 2009-07, Vol.91 (2), p.443-451
Hauptverfasser: Lu, D-H, Yang, X-Q, Mao, J-H, Ye, H-L, Wang, P, Chen, Y-P, He, Z-Q, Chen, F
Format: Artikel
Sprache:eng
Schlagworte:
Freshwater
Oryza sativa
Ustilaginoidea virens
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Zusammenfassung:Fifty nine isolates of Ustilaginoidea virens, the cause of false smut of rice (Oryza sativa L.), were obtained from 46 rice hybrids in 14 counties in Sichuan, China during a survey conducted in 2006. Their pathogenicity was tested by inoculation on 3 rice hybrids, Gangyou182, Gangy-ou94-11 and Yixiangyou2292, 6-9 days before heading in 2007. False smut was assessed 3 weeks after inoculation using a disease index (DI) based on symptom frequency on the panicles. The sporulation capacity of these isolates was also measured. The results showed that: (i) DIs were significantly different (P
ISSN:1125-4653