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EFFECT OF LIGHT AND TWO ISOMERS OF NITROPHENYL INDOLE-2-CARBOXYLIC ACID ON GERMINATION OF CENCHRUS CILIARIS SEEDS

M. SHAFIQ CHAUDHRY^*, MISBAHUL AIN KHAN^** AND FAIZ-UL HASSAN NASIM

Abstract: Effect of light and different concentrations of m- and p- isomers of 1-nitrophenyl indole-2-carboxylic acid (NPICA) has been investigated on the germination of Cenchrus ciliaris seeds. Light not only delayed germination of the seeds but also reduced the germination by >62 %. Presence of 15 to 45 ppm of either 1m- or 1-p-NPICA in the germination medium showed a negative effect on seed germination whereas, presence of 30 ppm of either of the two isomers improved germination, albeit slightly and only in the presence of light.

Department of Pharmacy, Islamia University, Railway Road Campus, Bahawalpur -63108, Pakistan.
Cholistan Institute of Desert Studies, Bahawalpur, Pakistan.
Chemistry Department, Islamia University, Bahawalpur, Pakistan.