Chloroplast and nuclear microsatellite analysis of Aegilops cylindrica |
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| Authors: | Harish T. Gandhi M. Isabel. Vales Christy J. W. Watson Carol A. Mallory-Smith Naoki Mori Maqsood Rehman Robert S. Zemetra Oscar Riera-Lizarazu |
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| Affiliation: | (1) Department of Crop and Soil Science, Oregon State University, 107 Crop Science Building, Corvallis, OR 97331-3002, USA;(2) Laboratory of Plant Genetics, Faculty of Agriculture, Kobe University, 1 Rokkodai-cho, Nadu-ku, Kobe 657-8501, Japan;(3) Department of Plant, Soil, and Entomological Sciences, University of Idaho, Moscow, ID 83844-2339, USA |
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| Abstract: | Aegilops cylindrica Host (2n=4x=28, genome CCDD) is an allotetraploid formed by hybridization between the diploid species Ae. tauschii Coss. (2n=2x=14, genome DD) and Ae. markgrafii (Greuter) Hammer (2n=2x=14, genome CC). Previous research has shown that Ae. tauschii contributed its cytoplasm to Ae. cylindrica. However, our analysis with chloroplast microsatellite markers showed that 1 of the 36 Ae. cylindrica accessions studied, TK 116 (PI 486249), had a plastome derived from Ae. markgrafii rather than Ae. tauschii. Thus, Ae. markgrafii has also contributed its cytoplasm to Ae. cylindrica. Our analysis of chloroplast and nuclear microsatellite markers also suggests that D-type plastome and the D genome in Ae. cylindrica were closely related to, and were probably derived from, the tauschii gene pool of Ae. tauschii. A determination of the likely source of the C genome and the C-type plastome in Ae. cylindrica was not possible. |
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