Alterations in flower and seed morphologies and meiotic chromosome behaviors of micropropagated rhubarb (Rheum rhaponticum L.) ‘PC49’ |
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| Authors: | Yipeng Zhao Yan Zhou Brian WW Grout |
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| Institution: | 1. Department of Horticulture, Henan Institute of Science and Technology, Xinxiang 453003, Henan, China;2. Department of Plant Biotechnology, Henan Institute of Science and Technology, Xinxiang 453003, Henan, China;3. Faculty of Life Sciences, University of Copenhagen, Hoejbakkegaard Alle 21, 2630 Taastrup, Denmark |
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| Abstract: | Variations in flower and seed and meiotic chromosome behaviors were investigated in micropropagated rhubarb (Rheum rhaponticum L.) ‘PC49’. The results showed that micropropagated plants had significantly higher variations in flower and seed morphologies and chromosome behaviors than plants derived from crown division. The results demonstrated that micropropagated plants grew 2–5 stamens, 8–13 stigmas, and 2–7 seed-wing, compared to 3 stamens, 9 stigmas and 3 (rarely 4) seed-wing in crown-derived plants. Additionally, alteration in chromosome behaviors (i.e. lagging and bridging) was observed only in micropropagated plants. All the results suggest that somaclonal variation may have been involved in micropropagated rhubarb ‘PC49’. |
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| Keywords: | Flower and seed morphologies Micropropagation Chromosome behavior Rhubarb &lsquo PC49&rsquo Somaclonal variations |
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