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当前位置: 首页 > 文章 > Plant hormone treatments to alleviate the effects of salt stress on germination of Betula platyphylla seeds 林业研究(英文版) 2019,30 (3)
Position: Home > Articles > Plant hormone treatments to alleviate the effects of salt stress on germination of Betula platyphylla seeds Journal of Forestry Research 2019,30 (3)

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

作  者：
Zhixin Li;Xiaona Pei;Shan Yin;Lang Xian-bo;Xiyang Zhao;Guanzheng Q
单  位：
Yanbian Academy of Agricultural Sciences, Longjing, People’s Republic of China;State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University) Northeast Forestry University, Harbin, People’s Republic of China;State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University) Northeast Forestry University, Harbin, People’s Republic of Chin
关键词：
Betula platyphylla;Germination;Salt stress;Hormone;OSMOTIC ADJUSTMENT;MELATONIN;CELLS;GROWTH;ACID;L
摘  要：
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, GA(3); 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 GA(3) 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 10mg/L 6BA and 300mg/L GA(3). 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.

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