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Variation and genetic stability analyses of transgenic TaLEA poplar clones from four different sites in China
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Variation and genetic stability analyses of transgenic TaLEA poplar clones from four different sites in China
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Journal Article
Variation and genetic stability analyses of transgenic TaLEA poplar clones from four different sites in China
2015
Overview
Scientists have widely applied transgenic technology to plants. We transferred the TaLEA gene to Populus simonii × P. nigra (Xiaohei Poplar), obtained ten transgenic poplar clones and analyzed these clones in a greenhouse and woodland. The heights (H), basal diameters (BD), and diameter at breast high (DBH) were significantly different (P < 0.01) among the 11 test clones (the ten above and one non-transgenic clone, the control). Trees from the Xinhua site, that had low soil pH and conductivity, showed the largest H and DBH. Clone XL-1 showed the highest H, BD and DBH among the test 11 clones for 1-year-old or 3-years-old trees. The phenotypic coefficient of variation and repeatability (R) of all the traits ranged from 19.33 to 41.22 % and 0.772 to 0.965, respectively. AMMI analysis results showed that genotype (G), environment (E) and G × E interaction were highly significantly correlated (P < 0.01). Stability analysis indicated some clones that produced tall or average trees were sensitive to or resistant to adverse environmental conditions, respectively. These results suggested that the number of copies of TaLEA gene or the different integration site of each clone were not exactly same, resulting in a variety of genetic and phenotype effects. The research can provide theoretical basis for tree genetic in saline.
