Induction of Callus Cultures from Stems and Cotyledonary Leaves of Prosopis farcta L. by Using some Plant Growth Regulators

Abstract

This study was capable to find the optimal conditions for callus initiation and growth from stems and cotyledonary leaves segments of Prosopis farcta, by using different concentrations of plant growth regulators NAA, IBA, Zeatine and BA alone or in an interaction between them in agar-solidified MS medium. The better media that encouraged callus induction from stem segments were those supplemented with 3.0 mg/L NAA + 0.5 mg/L BA, 2.0 mg/L IBA + 1.0 mg/L BA, 0.5 mg/L NAA + 2.0 mg/L Zeatine, 3.0 mg/L IBA + 2.0 mg/L Zeatine in which the induction percent reached 90%, 90%, 90%, 60% and fresh weight that reached up 1.44, 2.1, 2.17, 0.9 gm respectively. Whereas the better media that encouraged callus induction from cotyledonary leaves segments were those supplemented with 0.5 mg/L NAA + 0.5 mg/L BA, 3.0 mg/L IBA + 0.1 mg/L BA, 0.5 mg/L NAA + 2.0 mg/L Zeatine, 2.0 mg/L IBA + 2.0 mg/L Zeatine with callus induction percent reached to 100%, 100%, 100%, 100% and fresh weight average 1.89, 2.42, 2.47, 2.67 gm respectively. It is clear that 0.5 mg/L NAA has an important role in callus initiation alone or with BA and Zeatine dependent on callus induction percent and its fresh weight.On the other hand, the explants failed to continue in its viability when cultured on agar-solidified MSO medium.