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Journal of Forestry Research

, Volume 30, Issue 3, pp 779–787 | Cite as

Plant hormone treatments to alleviate the effects of salt stress on germination of Betula platyphylla seeds

  • Zhixin Li
  • Xiaona Pei
  • Shaopeng Yin
  • Xianbo Lang
  • Xiyang ZhaoEmail author
  • Guan-Zheng QuEmail author
Original Paper
  • 179 Downloads

Abstract

We analyzed the germination traits (germination rate, germination potential, and germination index) of seeds from 23 half-sib families of birch (Betula platyphylla). The germination rates of the 23 families ranged from 38.57 to 76.50%. Seeds from the eight families germinating at the highest rates were then used for germination experiments under salt stress. Germination rate, germination potential, and germination index of these eight half-sib families decreased with increasing salt concentrations. The effects of four different hormones (6-benzylaminopurine, 6BA; gibberellin, GA3; naphthalene acetic acid, NAA; and melatonin) at various concentrations on the germination of seeds from the eight half-sib birch families under salt stress were investigated. Treatments with 6BA and GA3 alleviated the effects of salt stress on seed germination, whereas treatments with NAA and melatonin aggravated the effects of salt stress. The most effective treatments for alleviating the effects of salt stress on birch seed germination were 10 mg/L 6BA and 300 mg/L GA3. This study provides practical information for screening birch families for salt tolerance at the seed germination stage, and for cultivation of birch in saline environments.

Keywords

Betula platyphylla Germination Salt stress Hormone 

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Copyright information

© Northeast Forestry University and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University) Northeast Forestry UniversityHarbinPeople’s Republic of China
  2. 2.Yanbian Academy of Agricultural SciencesLongjingPeople’s Republic of China

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