Multiplication of Moringa oleifera shoots on MS medium supplemented with 2.5 µM BAP for 3 weeks resulted in shoot vitrification which led to chlorosis, retardation of shoot formation, reduction in shoot length, necrosis of shoot tips and formation of friable calli on the base of cultured explants. Vitrification symptoms decreased when MS medium containing 2.5 µM BAP in combination with 10 µM AgNO3, 50 µM salicylic acid (SA) or 200 µM CoCl2 was used. Studying isoenzyme patterns of SOD, POX, CAT, GOT and EST indicated that moringa shoots multiplied without obvious variation in isoenzyme patterns up to 7 subcultures. Moringa shoots subjected to 14 subcultures and anti-ethylene compounds showed variation in isoenzyme patterns and were associated with the disappearance of vitrification which facilitated root formation and acclimatization. Under long term cultures, RAPD, ISSR and SSR indicated …
AddressCentral Lab of Genetic Engineering- Faculty of Science- Sohag University
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