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)

Abstract

Effect of (2-chloroethyl) trimethyl ammonium chloride (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) was studied. CCC application at 1000ppm and 1500ppm markedly reduced the extension growth of the shoot system. CCC at 1000ppm (1000 mg · dm^-3) significantly increased the number as well as dry weight of root nodules and activity of nitrogenase (acetylene reduction). The contents of total nitrogen, ureides, sugars and starch in shoot and root systes were also increased considerably in response to CCC (1000ppm) treatment. The present study suggests that CCC application may lead to the availability of more photosynthate for nodule formation and nitrogen fixation in mung bean.