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5种杨树苗期形态及生理结构特征比较初探

刘炳梅 齐芪 刘淑欣 晁楠 蒋湘宁 盖颖

刘炳梅, 齐芪, 刘淑欣, 晁楠, 蒋湘宁, 盖颖. 5种杨树苗期形态及生理结构特征比较初探[J]. 北京林业大学学报, 2015, 37(6): 35-44. doi: 10.13332/j.1000-1522.20150063
引用本文: 刘炳梅, 齐芪, 刘淑欣, 晁楠, 蒋湘宁, 盖颖. 5种杨树苗期形态及生理结构特征比较初探[J]. 北京林业大学学报, 2015, 37(6): 35-44. doi: 10.13332/j.1000-1522.20150063
LIU Bing-mei, QI Qi, LIU Shu-xin, CHAO Nan, JIANG Xiang-ning, GAI Ying. Comparison of morphological and physiological characteristics of five poplar species in China[J]. Journal of Beijing Forestry University, 2015, 37(6): 35-44. doi: 10.13332/j.1000-1522.20150063
Citation: LIU Bing-mei, QI Qi, LIU Shu-xin, CHAO Nan, JIANG Xiang-ning, GAI Ying. Comparison of morphological and physiological characteristics of five poplar species in China[J]. Journal of Beijing Forestry University, 2015, 37(6): 35-44. doi: 10.13332/j.1000-1522.20150063

5种杨树苗期形态及生理结构特征比较初探

doi: 10.13332/j.1000-1522.20150063
基金项目: 

国家自然科学基金项目(NSF 31300498)、教育部创新团队发展计划项目(IRT13047)。

详细信息
    作者简介:

    刘炳梅。主要研究方向:仪器分析、植物生理。Email:sangel827@126. com摇地址:100083 北京市清华东路35 号北京林业大学生物科学与技术学院。责任作者: 盖颖,博士,副教授。主要研究方向:生物化学与分子生物学。Email:gaiying@ bjfu. edu. cn摇地址: 同上

    刘炳梅。主要研究方向:仪器分析、植物生理。Email:sangel827@126. com摇地址:100083 北京市清华东路35 号北京林业大学生物科学与技术学院。责任作者: 盖颖,博士,副教授。主要研究方向:生物化学与分子生物学。Email:gaiying@ bjfu. edu. cn摇地址: 同上

Comparison of morphological and physiological characteristics of five poplar species in China

  • 摘要: 本研究以毛果杨、毛白杨、银灰杨、欧美杨和胡杨为研究对象,对其苗期生长、光合作用、微观结构、木质素组成、激素含量等多个指标进行分析比较,旨在寻找其苗期生长和生理特征上的差异,探究不同杨树生长速度不同、应用不同的原因,进而指导应用。研究发现毛白杨、银灰杨和欧美杨表现出栽后缓苗迅速、生长速度快的特点。可能是受到较强光合作用(有机物合成积累)和较强蒸腾作用(水和无机盐的运输)双重因素的影响,即光合速率高、光合能力强,能合成积累更多有机物;气孔导度值较高、蒸腾速率高,能够有效吸收CO2进行光合,并且能高效运输水和无机盐,在生产应用中具有很大潜力。毛白杨的木质素含量高,适于建筑用材;银灰杨和欧美杨的木质素含量低,适于造纸。同地区栽培的毛果杨和胡杨生长速度慢、生长状况欠佳,在生产上不宜采用。生长速度缓慢除了受光合、蒸腾影响外,也可能与激素含量有关,赤霉素含量较高会导致木质部细胞早期分化程度高。毛果杨虽生长缓慢,在我国引种相对较少,但是作为林木树种遗传转化研究中的代表种,意义重大。而胡杨能够抵御干旱盐碱,具有防护作用,这可能与其cis-ABA含量较高、气孔导度低、蒸腾速率低、水分丧失少有关。

     

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  • 收稿日期:  2015-03-10

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