Maximum petiole length was obtained from T4, GA3@100ppm
(13.2 cm) which was significantly differ from all other
treatments whereas; minimum petiole length was obtained from
control (T1) 6.3cm. Gibberellins induced increase in length of
petiole might be due to changes in cellular microtubule. Similar
result is also obtained by Singh and Kabul, 1970.