Half strength MS media supplemented with the lower
concentrations (0.1 and 0.2 mg/l) of all the auxins
responded well. Our results are supported by Kaul et al.
(1990) who reported that at higher concentrations of
auxins, shoots failed to regenerate roots.
However, the best response was obtained in 0.2 mg/l
for all the auxins as it had produced the best results for
average number of days for root emergence, root induction
percentage, high number of roots per plantlets and
average length of roots. A number of research workers
including Hoque and Fatema (1995), Hoque et al. (1998),
Rout (2005), and Liu and Gao (2007), mentioned ½ MS
medium fortified with 0.2 mg/l auxins as the most optimum
media for root initiation and development.