Citation
Saad Abdullah, . and Habibuddin Hashim, . Pathotypes and virulence of Xanthomonas oryzae causing bacterial blight disease of rice in Peninsular Malaysia. pp. 257-266. ISSN 1394-9829
Abstract
A study was conducted on Xanthomonas oryzae isolates collected from major granary areas in Peninsular Malaysia. Study on the 346 isolates indicated that most of them (29.5) could be grouped into pathotype P1.0. Pathotype P1.0 was only virulent against rice variety IR 8 which carried the resistant gene Xa-11 but remained avirulent against other differential varieties. Pathotype P1.0 was detected in all states. The most virulent pathotype was P7.7 which was capable of causing severe lesion on all differential varieties tested. However most of the virulent pathotypes were only represented by a small number of isolates and limited to certain localities only. Rice variety MR 84 which was popular in the 90s was susceptible to the common isolates. However other differential varieties such as Cempo Selak Zenith IR 20 DV 85 and Patong 32 were resistant and most of the tested isolates remained avirulent against them.
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Abstract
A study was conducted on Xanthomonas oryzae isolates collected from major granary areas in Peninsular Malaysia. Study on the 346 isolates indicated that most of them (29.5) could be grouped into pathotype P1.0. Pathotype P1.0 was only virulent against rice variety IR 8 which carried the resistant gene Xa-11 but remained avirulent against other differential varieties. Pathotype P1.0 was detected in all states. The most virulent pathotype was P7.7 which was capable of causing severe lesion on all differential varieties tested. However most of the virulent pathotypes were only represented by a small number of isolates and limited to certain localities only. Rice variety MR 84 which was popular in the 90s was susceptible to the common isolates. However other differential varieties such as Cempo Selak Zenith IR 20 DV 85 and Patong 32 were resistant and most of the tested isolates remained avirulent against them.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Xanthomonas oryzae |
| AGROVOC Term: | Pathotypes |
| AGROVOC Term: | Virulence |
| AGROVOC Term: | Bacterial diseases |
| AGROVOC Term: | Rice |
| AGROVOC Term: | Granaries |
| AGROVOC Term: | Virulent pathogens |
| AGROVOC Term: | Lesions |
| AGROVOC Term: | Avirulent pathogens |
| AGROVOC Term: | Fertilization |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 06:29 |
| URI: | http://webagris.upm.edu.my/id/eprint/24546 |
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