The emergence of Ug99 races of the stem rust fungus is a threat to world wheat production
RP Singh, DP Hodson, J Huerta-Espino… - Annual review of …, 2011 - annualreviews.org
Race Ug99 of the fungus Puccinia graminis tritici that causes stem or black rust disease on
wheat was first detected in Uganda in 1998. Seven races belonging to the Ug99 lineage are
now known and have spread to various wheat-growing countries in the eastern African
highlands, as well as Zimbabwe, South Africa, Sudan, Yemen, and Iran. Because of the
susceptibility of 90% of the wheat varieties grown worldwide, the Ug99 group of races was
recognized as a major threat to wheat production and food security. Its spread, either wind …
wheat was first detected in Uganda in 1998. Seven races belonging to the Ug99 lineage are
now known and have spread to various wheat-growing countries in the eastern African
highlands, as well as Zimbabwe, South Africa, Sudan, Yemen, and Iran. Because of the
susceptibility of 90% of the wheat varieties grown worldwide, the Ug99 group of races was
recognized as a major threat to wheat production and food security. Its spread, either wind …
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