Abstract
Six races were identified among 26 single-lesion isolates of Phakopsora pachyrhizi from rust-infected leaves of nine samples of cultivated soybean and one sample of the wild host plant kudzu (Pueraria lobata) collected in Tsukuba and vicinity in Ibaraki, Central Honshu, Japan. Six races were detected on soybean cultivars and four races on kudzu. When two or more isolates obtained from the same samples were examined, the isolates were different races except from two samples. These results indicate that two or more races may be distributed on the same soybean cultivar and that the same races share soybean and kudzu hosts.
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Acknowledgments
We are grateful to the Brazilian Agricultural Research Corporation (EMBRAPA) for providing seeds of plant materials. This research was supported by the JIRCAS Research Project "Identification of Stable Resistance to Soybean Rust for South America" and "Development of Breeding Technologies toward Improved Production and Stable Supply of Upland Crops".
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Yamaoka, Y., Yamanaka, N., Akamatsu, H. et al. Pathogenic races of soybean rust Phakopsora pachyrhizi collected in Tsukuba and vicinity in Ibaraki, Japan. J Gen Plant Pathol 80, 184–188 (2014). https://doi.org/10.1007/s10327-014-0507-5
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DOI: https://doi.org/10.1007/s10327-014-0507-5