The traditional means of increasing crop productivity
are reaching their limits, and the increasing demand
for plant production necessitates new strategies for future
improvements in crop yields [1]. The identification
of the methods responsible for manifestation of growthand yield has now become one of the most important
tasks to provide food security for the future generation.
It has been widely accepted that plant growth and development
is controlled by the plant hormones, which are
endogenously produced by the plants. However, synthetic
plant growth regulators are also increasingly used
to modify growth, development, stress behaviour, as
well as qualitative and quantitative yield of crop plants.
Plant-growth regulators open new opportunities to improve
agricultural crop yield by circumventing several
barriers imposed by genetics and environment.