TECHNIQUES FOR RACE TYPING OF XANTHOMONAS ORYZAE (UYEDA ET ISHIYAMA) DOWSON IN MALAYSIA

B.L. HO

SUMMARY

Efficient and fast techniques for race typing of X. oryzae were developed. Using these techniques, Malaysian isolates of X. oryzae were shown to exist in races and rice cultivars shown to vary in race specific, vertical resistance, Techniques of mass inoculation and disease assessment based on lesion types were described.

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