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Pak. J. Bot., 45(5): 1509-1514, 2013.

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QUANTITATIVE CHANGES IN PROTEINS, PIGMENTS AND SENNOSIDES OF CASSIA ANGUSTIFOLIA VAHL TREATED WITH MANCOZEB

UZMA MAJID, MAHMOODUZZAFAR, TARIQ OMAR SIDDIQI, IBRAHIM MOHAMMAD AREF¹ AND MUHAMMAD IQBAL^*

Abstract: Seeds of Cassia angustifolia Vahl treated with different concentrations (0%, 0.1%, 0.15%, 0.2%, and 0.25%) of a fungicide, Mancozeb, were sown in field conditions in order to study the effect of the stress caused by this fungicide on pigment concentration and the protein and sennoside contents of the plant. Protein content and pigment concentration increased at 0.10% dose of Mancozeb, but higher doses caused a significant decline in comparison with the control. Application of Mancozeb resulted in a considerable dose-dependent reduction in the contents of sennoside a (nearly 7-32% reduction in young leaves, 14-36% in mature leaves and 8-24% in pods) and sennoside b (about 11-36% reduction in young leaves, 5-38% in mature leaves and 5-30% in pods), thus affecting indirectly the therapeutic property of the plant.

Department of Botany, Faculty of Science, Jamia Hamdard, New Delhi-110062, India

¹Department of Plant Production, College of Food & Agricultural Sciences, King Saud University, Riyadh, 11451, KSA

^*Corresponding author: Email address: iqbalg5@yahoo.co.in, Tel: +91+11+26059688