Abiotic stresses is a major limiting factor in plant growth.
Drought is a serious problem that affects many regions of the
world, decreasing the productivity of crops worldwide. Cotton is
the most valuable textile fiber crop and second oilseed crop in the
world. Agriculture is the largest sector of Pakistan's economy
contributing 21% GDP. Fiber yield and lint quality is limited by
drought stress after bloom. In the present work by using different
molecular biological techniques six drought responsive transcripts
and three full length genes have been identified from desi cotton.
Their expression is also checked which showed significant over
expression of these genes in drought stressed leaves as compared to
control. Two genes were transformed into commercial cultivar of
cotton. This work has a great impact on economy of Pakistan and
will help to develop drought tolerant cotton varieties. It is need
of time to develop drought tolerant crops as water shortage is
becoming the major problem for the whole world.
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