negative regulation of stomatal opening
down regulation of stomatal opening
exact
down-regulation of stomatal opening
exact
downregulation of stomatal opening
exact
inhibition of stomatal opening
narrow
Any process that stops, prevents or reduces the frequency, rate or extent of stomatal opening.
GO:0048523
negative regulation of cellular process
is_a
GO:1902456
regulation of stomatal opening
is_a
GO:1990069
stomatal opening
negatively_regulates