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High-Frequency Regeneration of the Drought-Tolerant Tree Melia volkensiiGurke Using Low-Cost Agrochemical Thidiazuron
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High-Frequency Regeneration of the Drought-Tolerant Tree Melia volkensiiGurke Using Low-Cost Agrochemical Thidiazuron
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Journal Article
High-Frequency Regeneration of the Drought-Tolerant Tree Melia volkensiiGurke Using Low-Cost Agrochemical Thidiazuron
2012
Overview
Melia volkensiiGurke is a drought-tolerant tree native to East Africa's arid and semiarid lands (ASALs), with vast but underutilized potential for agroforestry and sustainable livelihoods in the ASALs. Its cultivation is limited by difficulties in propagation via conventional means. Full exploitation of the ability of thidiazuron (TDZ) to elicit regeneration in plant tissue cultures, as sole plant growth regulator (PGR), is hampered by high costs. This study tested the effectiveness of a low-cost agrochemical TDZ for in vitropropagation of M. volkensii. Zygotic embryos from mature seeds were cultured on Gamborg's B5 medium containing 0 to 4 mg/L of agrochemical TDZ from Kingtai Chemicals Co.,Ltd., China. Callus induction frequency was 96.67 to 100%. Significantly large callus fresh mass was produced at 0.05 mg/L TDZ concentration (ANOVA, P <0.001 ). The effect of TDZ on embryogenicity was significant over certain ranges of concentrations (Anova, P <0.001 ). Multiple somatic embryos developed within 14 days of subculture to hormone-free B5 medium. Somatic embryos developed into microshoots which elongated when transferred to 1 /2 MS medium supplemented with 0.1 mg/L 6-benzylaminopurine plus 10% coconut water. The Kingtai-TDZ showed a high potency and suitability for use in M. volkensiitissue culture.
Publisher
Hindawi Limited
Subject
