Editors-in-Chief:  Weilun Yin, Beijing Forestry University, China Klaus v. Gadow, University of Göttingen, Germany
Volume 7 Issue 3
Nov.  2019
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Zhang Dong-fang, Zhang Zhi-yi, Zhu Zhi-ti. Cross Breeding of Populus and Its Hybrids for Cold Resistance[J]. Forest Ecosystems, 2005, 7(3): 70-76.
Citation: Zhang Dong-fang, Zhang Zhi-yi, Zhu Zhi-ti. Cross Breeding of Populus and Its Hybrids for Cold Resistance[J]. Forest Ecosystems, 2005, 7(3): 70-76.
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Cross Breeding of Populus and Its Hybrids for Cold Resistance

  • Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Beijing Forestry University, Beijing, 100083, P. R. China

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Supported by the Doctoral Foundation of Ministry of Education (Grant No. 200220022004) and the National "863" Project (Grant No. 2002AA241071)

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    Graphical Abstract
    • Abstract
  • Populus tomentosa
     was crossed with P. tremuloidis
    , P. grandidentata
    , P. alba
    ×P. grandidentata
     and P. alba
    ×Ulmus pumila
     in order to maintain its rapid growth and high wood quality and improve its resistance to cold. Two methods were used to increase the germination rate from 1. 5% to 41. 1% and the remaining rate from 1. 7% to 44. 2%. Forty crossing combinations were conducted and 2 744 hybrid seedlings were obtained. MX4
    ×P. grandidentata
     (G-1-58), MX3
    ×P. tremuloidis
     (T-44-60), MX2
    ×P. tremuloidis
     (l-13-87-37) and MX2
    ×(P. alba
    ×P. grandidentata
    ) were regarded as superior combinations after analysis and selection. Thirty seedlings of these combinations and 11 triploid seedlings identified by counting their chromosomes were selected as super plants.
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