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Analysis of Chinese Spring regenerants obtained from short- and long-term wheat somatic embryogenesis

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Somatic embryogenesis was initiated from ‘immature embryos’ on Murashige-Skoog (MS) medium plus 2 mg.l-1 2,4-dichlorophenoxyacetic acid, 2% sucrose and 0.6% agarose. Somatic embryos were isolated and regenerated into whole green plants on MS medium devoid of 2,4-D. These regenerants were previously demonstrated to differ in their mitochondrial DNA organization. In order to estimate their characteristics three progenies of short-term culture regenerants and three progenies of long-term culture regenerants were analyzed and compared to the parental line. These somaclones obtained from the wheat variety Chinese Spring were evaluated for variation of 13 agronomic and morphological quantitative characters in comparison to the parental line. Significant variation was observed for plant height, spike length, main tiller diameter, between the somaclones regenerated from long-term culture and their parent. Differences were observed to increase with the duration of culture, leading to a significant modification of the structure of the plants. Several changes occurred during the somatic tissue cultures, but to a lesser extent than has previously been described in the literature.

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Symillides, Y., Henry, Y. & De Buyser, J. Analysis of Chinese Spring regenerants obtained from short- and long-term wheat somatic embryogenesis. Euphytica 82, 263–268 (1995). https://doi.org/10.1007/BF00029569

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