EFFECT OF CCC ON SHOOT GROWTH, NODULATION, NITROGENASE ACTIVITY, AND CONTENTS OF NITROGEN, UREIDES, SUGARS AND STARCH IN MUNG BEAN (VIGNA-RADIATA L! WILCZEK VAR GUJ-2)

Effect of (2-chloroethyl) trimethyl ammonium chloride (CCC) on shoot g rowth, nodulation, nitrogenase activity, and contents of nitrogen, ure ides, sugars and starch in mung bean (Vigna radiata L. Wilczek var. Gu j-2) was studied. CCC application at 1000 ppm and 1500 ppm markedly re duced the extension growth of the shoot system. CCC at 1000 ppm (1000 mg . dm-3) significantly increased the number as well as dry weight of root nodules and activity of nitrogenase (acetylene reduction). The c ontents of total nitrogen, ureides, sugars and starch in shoot and roo t systes were also increased considerably in response to CCC (1000 ppm ) treatment. The present study suggests that CCC application may lead to the availability of more photosynthate for nodule formation and nit rogen fixation in mung bean.