陈坤荣, 李桐森, 田广红, 赵滇庆, 和丽岗. 珙桐繁殖的生物学特性[J]. 西南林业大学学报, 1998, 18(2): 68-73. DOI: 10.11929/j.issn.2095-1914.1998.02.002
引用本文: 陈坤荣, 李桐森, 田广红, 赵滇庆, 和丽岗. 珙桐繁殖的生物学特性[J]. 西南林业大学学报, 1998, 18(2): 68-73. DOI: 10.11929/j.issn.2095-1914.1998.02.002
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Chen Kunrong, Li Tongsen, Tian Guanghong, Zhao Dianqing, He Ligang. The Biological Characteristics in Dovetree Davidia involucrata Propagation[J]. Journal of Southwest Forestry University, 1998, 18(2): 68-73. DOI: 10.11929/j.issn.2095-1914.1998.02.002
Citation: Chen Kunrong, Li Tongsen, Tian Guanghong, Zhao Dianqing, He Ligang. The Biological Characteristics in Dovetree Davidia involucrata Propagation[J]. Journal of Southwest Forestry University, 1998, 18(2): 68-73. DOI: 10.11929/j.issn.2095-1914.1998.02.002
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珙桐繁殖的生物学特性

The Biological Characteristics in Dovetree Davidia involucrata Propagation

    摘要
  • 摘要: 珙桐种子繁殖和扦插繁殖的生物学特性研究,弄清了种子休眠的主要原因在于种胚形态后熟和生理后熟,探讨了种子休眠萌发机理.用人工低温冷冻或GA+6-BA处理,可使层积2年尚未萌发的种子70%左右在半月内迅速萌发出苗,缩短休眠期约1年.经不同处理的扦插试验,5%的插条可生根成苗.

     

    Abstract: The whole process of seed and cutting propagation of Davidia involucrata Baill was researched.The main cause of its seed dormancy was afterripening of seed-embryo and seed-physiology.The mechanism of seed dormancy and germination was discussed.Seeds of two-year sand-storage treatment could be germinated up to 70% of surviving rate by means of freezing or GA+6-BA in 15 dyas, which shortened one year time of its seed dormancy.In cutting, 5% rooting rate was the best one among various treatments.

     

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