Sugarcane rust

Sugarcane rust is caused by Puccinia erianthi and it should be of interest to wheat breeders. This is because this rust is very similar to the wheat rusts, but horizontal resistance has controlled it completely, effectively, and permanently. About one percent of cane seedlings are very susceptible to this disease, which is important only on its first arrival as a re-encounter disease in areas where susceptible cultivars were being cultivated. It was serious in Cuba, on its first arrival in the Caribbean, but other islands had anticipated its arrival and had replaced all their susceptible cane with resistant cultivars in the course of routine replanting. Nevertheless, some authors (who, in charity, need not be named) assumed that the resistance was vertical, and they reported apparent failures of resistance in cultivars that had been inadequately tested.

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