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Journal of Biological Sciences

Year: 2001 | Volume: 1 | Issue: 9 | Page No.: 801-804
Research Article

Effect of Growth Hormones i.e., GA3, IAA and Kinetin on the External Morphology and Flowering of Phaseolus aureus L.

Najma Yaqoob Chaudhry
Department of Botany, University of the Punjab, Ouaid-e-Azam Campus, Lahore-54590, Pakistan
Uzma Khadem Hussain
Department of Botany, University of the Punjab, Ouaid-e-Azam Campus, Lahore-54590, Pakistan
Effect of the growth hormones i.e., gibberellic acid (GA3), indole-3-acetic acid (IAA) and Kinetin were studied on the shoot of Phaseolus aureus L., after 45 and 60 days of treatment and was compared with control. Hormones were used individually i.e., 100 ppm GA3, 100 ppm IAA and 20 ppm Kinetin and in combinations i.e., 100 ppm GA3 + 100 ppm IAA, 100 ppm GA3 + 20 ppm Kinetin, 100 ppm IAA + 20 ppm Kinetin and 100 ppm GA3 + 100 ppm IAA + 20 ppm Kinetin. Applied GA3 proved to be very effective individually as well as in combinations thus increasing the number of internodes and leaves as compared to control as well as IAA and Kinetin treatments. Likewise early initiation of flowering was observed in the GA3 treatments. The maximum number of flowers were borne on the plants treated with GA3. The IAA and Kinetin treatments did not show any significant increase/decrease in the number of internodes and leaves when compared with control. Moreover, IAA and Kinetin did not show any significant effect on the floral initiation and on the number of flowers per plant
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