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Effect of 6-BA on the Plant Regeneration via Organogenesis from Cotyledonary Node of Cowpea (Vigna unguiculata L. Walp)

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Author(s): Manman Tie | Qian Luo | Yanxia Zhu | Huanxiu Li

Journal: Journal of Agricultural Science
ISSN 1916-9752

Volume: 5;
Issue: 5;
Date: 2013;
Original page

ABSTRACT
The present study compares effects of different concentrations of 6-BA on regeneration from cotyledonary node explants of cowpea (Vigna unguiculata L. Walp). The seeds were inoculated on MSB5 medium [Murashige and Skoog (1962) salts and Gamborg B5 vitamins (1968)] containing different concentrations (0, 1, 2, 3, 4, 5 mg/L) of 6-BA for 4 days. The cotyledonary node explants with one cotyledon excised from 4-day-old seedlings, placed in vitro on MSB5 medium containing 6-BA at different dose (0, 0.5, 1.0, 1.5 mg/L) for shoot induction and elongation. Best response in terms of shoot number and shoot length were obtained with explants derived from seedling preconditioning with 3mg/L 6-BA followed by the induction and elongation stage pretreated with 0.5mg/L 6-BA. The elongated shoots were rooted on MSB5 medium without hormone.
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