Lentil seeds inoculated with Rhizobium and those without inoculation were sown in pots and 15 days after germination, different concentrations of L-tryptophan (L-TRP) were applied to the inoculated plants. Results showed that nodulation (number and weight) was substantially increased due to Rhizobium inoculation and L-TRP application. Rhizobium inoculation alone increased the grain yield by 20.9% over uninoculated control and application of 1.7 mg L-TRP kg" soil along with Rhizobium inoculation increased it further by 30.6%. Indole-acetic acid production by Rhizobium leguminosarum increased with increasing L-TRP levels and incubation period.
Iftikhar Hussain, Muhammad Arshad. (1995) SUBSTRATE-DEPENDENT MICROBIAL fllODUCTION OF AUXINS AND THEIR INFLUENCE ON THE GROWTH AND NODULATION OF LENTIL, , Volume 32, Issue 2,3.
