Optimisation of a highly efficient shoot regeneration system using leaf explants of Chinese jujube (<i>Ziziphus jujuba</i> Mill.) by response surface methodology Lu Hou Yan Wang Yanhong Cui Xiaoming Pang Yingyue Li 10.6084/m9.figshare.5363629.v1 https://tandf.figshare.com/articles/journal_contribution/Optimisation_of_a_highly_efficient_shoot_regeneration_system_using_leaf_explants_of_Chinese_jujube_i_Ziziphus_jujuba_i_Mill_by_response_surface_methodology/5363629 <p>Chinese jujube (<i>Ziziphus jujuba</i> Mill.) is a major fruit crop in Asia. In this study, response surface methodology (RSM) was successfully employed to establish a highly efficient <i>in vitro</i> propagation and regeneration system for the ‘Teapot’ jujube via shoot organogenesis. Among the tested factors, gibberellic acid (GA<sub>3</sub>) concentration showed the most significant positive effect. The pre-culture darkness timing and medium were also important factors for highly efficient shoot regeneration of the ‘Teapot’ jujube. The highest regeneration (> 75%) was achieved by 1 week in darkness and culture on wood plant medium (WPM) containing 0.25 mg·L<sup>−1</sup> GA<sub>3</sub>, 0.5 mg·L<sup>−1</sup> 6-benzylaminopurine (BAP) and 0.1 mg·L<sup>−1</sup> 3-indoleacetic acid (IAA). <i>In vitro</i>-derived shoots rooted very well in the modified <sup>1</sup>/<sub>2</sub> Murashige and Skoog (MS) medium containing 0.4 mg·L<sup>−1</sup> 3-indolebutyric acid (IBA), resulting in a 100% rooting rate. These findings suggest that the RSM can be employed to optimise the protocols needed for successful <i>in vitro</i> plant regeneration of jujube cultivars, with potential applications in plant genetic transformation practices, polyploidy induction and germplasm preservation.</p> 2017-08-31 12:17:10 Chinese jujube shoot regeneration response surface methodology in vitro propagation rooting efficacy