Xiyang Zhao

Mi Zheng2
Huiquan Zheng2
2Mi Zheng
2Huiquan Zheng
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The study utilized the offspring of a 5 × 5 diallel cross of Betula platyphylla as the experimental material. Tree height (H), diameter at breast height (DBH) and stem straight degree (SSD) were measured at the fourth and eighth growth year (SSD were measured only in the eighth growth year). ANOVA analyses showed that growth traits in different growth years(More)
Poplar (Populus spp.) is one of the most important economical tree species in temperate regions of the world. Easy propagation by cutting has made most of the selected genotypes of poplar available for intensive plantation with large genetic gains. Critical point for successful propagation of cutting is the development of roots. Thus, rooting context of the(More)
To determine the transcriptional activity of the promoter of Populus TIR (Toll/interleukin-1 receptor domain)-encoding PtDrl02 gene in perennial plants, β-glucuronidase (GUS) gene expression driven by PtDrl02 promoter was analyzed in white poplars. Agrobacterium-mediated transient expression assays indicated that the PtDrl02 promoter was able to direct the(More)
  • Mengran Liu, Shaopeng Yin, Dongjing Si, Longting Shao, Ying Li, Mi Zheng +4 others
  • 2015
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(More)
Estimating genetic parameters of parental lines through progeny testing and choosing good hybrid parents are important for genetically improving seed orchard trees. In this study, 24 tetraploid progeny seedlings were used as experimental materials, which came from test cross design: six tetraploid Betula platyphylla lines (Q33, Q13, Q103, Q19, Q83 and Q14)(More)
Growth characteristics have a complex inheritance pattern, and gene–environment interactions make predicting tree responses to environmental change difficult. In this study, we planted 44 Betula platyphylla families at three different sites (Mao er shan forestry center in Shangzhi, Jilin experiment forestry center in Jilin, Lang xiang forestry center in(More)
All organisms face the problem of how to perform a sequence of developmental changes and transitions during ontogeny. We revise functional mapping, a statistical model originally derived to map genes that determine developmental dynamics, to take into account the entire process of ontogenetic growth from embryo to adult and from the vegetative to(More)
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