Integrative Biology Journals

JOURNAL OF FORESTRY RESEARCH ›› 2023, Vol. 34 ›› Issue (6): 1941-1950.DOI: 10.1007/s11676-023-01612-7

• Original Paper • Previous Articles     Next Articles

Exceptionally high genetic variance of the doubled haploid (DH) population of poplar

Caixia Liu1,2, Sui Wang2,3, Yi Liu2, Meng Wang2, Erqin Fan2,4, Chen Liu2, Shikai Zhang2, Chuanping Yang2, Junhui Wang4, Heike W. Sederoff5, Xiangling You1, Vincent L. Chiang2,6, Su Chen2, Ronald R. Sederoff2,6,q, Guanzheng Qu2,r   

  1. 1 College of Life Science, Northeast Forestry University, 150040, Harbin, People’s Republic of China
    2 State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 150040, Harbin, People’s Republic of China
    3 Key Laboratory of Soybean Biology in Chinese Ministry of Education, Northeast Agricultural University, 150030, Harbin, People’s Republic of China
    4 State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, 100091, Beijing, People’s Republic of China
    5 Department of Plant and Microbial Biology, North Carolina State University, 27695, Raleigh, NC, USA
    6 Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, 27695, Raleigh, NC, USA
  • Received:2023-01-12 Accepted:2023-03-02 Online:2024-10-16
  • Contact: Ronald R. Sederoff, Guanzheng Qu

Abstract:

Doubled haploid (DH) plants have been widely used for breeding and biological research in crops. Populus spp. have been used as model woody plant species for biological research. However, the induction of DH poplar plants is onerous, and limited biological or breeding work has been carried out on DH individuals or populations. In this study, we provide an effective protocol for poplar haploid induction based on an anther culture method. A total of 96 whole DH plant lines were obtained using an F1 hybrid of Populus simonii ×  P. nigra as a donor tree. The phenotypes of the DH population showed exceptionally high variance when compared to those of half-sib progeny of the donor tree. Each DH line displayed distinct features compared to those of the other DH lines or the donor tree. Additionally, some excellent homozygous lines have the potential to be model plants in genetic and breeding studies.

Key words: Populus, Anther culture, Doubled haploid, Genetic variance, Flow cytometry