negative regulation of telium development
Any process that stops, prevents, or reduces the frequency, rate or extent of telium development, a process that leads to the formation of a teliospore-bearing sorus of the rust fungi.
GO:0075262
negative regulation of spore-bearing organ development
is_a
GO:0075276
regulation of telium development
is_a
GO:0075275
telium development
negatively_regulates