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EFFECTS OF SEED TREATMENT WITH GROWTH HORMONES AND RHIZOBIUM ON THE OIL CONTENTS, NITROGEN FIXATION AND YIELD OF SOYBEAN

ZARRIN FATIMA AND ASGHARI BANO

Abstract: Effects of soaking seed with plant growth regulators viz., Indole acetic acid (IAA), Abscisic acid (ABA) and Kinetin each at 10^-6 M on Glycine max (L) cv. NARC-1 was studied. Kinetin was found to be most effective in increasing the yield, oil as well as ash contents. Greater seed oil content were found in ABA and Kinetin treatment. Maximum ash contents and seed weight were found in Kinetin treated seed as compared to control. The absorbance for ethylene at 412 om of nodules was found to be significantly different from that of the control with maximum value recorded in Kinetin and minimum in IAA treated seeds.

Department of Biological Sciences, Quaid-e-Azam University, Islamabad, Pakistan.