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园艺学报 ›› 2015, Vol. 42 ›› Issue (8): 1599-1605.doi: 10.16420/j.issn.0513-353x.2014-1059

• 研究报告 • 上一篇    下一篇

长期增施CO2对蝴蝶兰生长与开花的影响

许申平,曾兰婷,叶庆生   

  1. 1郑州师范学院生物工程研究所,郑州 450044;2华南师范大学生命科学学院,广州 510631
  • 出版日期:2015-08-25 发布日期:2015-08-25
  • 基金资助:
    广东省科技计划项目(2011A020102007)

Effects of Long-term Elevated CO2 on Growth and Flowering in Phalaenopsis

XU Shen-Ping, ZENG Lan-Ting, YE Qing-Sheng   

  1. 1Institute of Bioengineering,Zhengzhou Normal University,Zhengzhou 450044,China;2College of Life Science,South China Normal University,Guangzhou 510631,China
  • Online:2015-08-25 Published:2015-08-25

摘要: 研究了长期(240 d)增施CO2(800 ± 50)μmol ? mol-1和大气CO2浓度约400 μmol ? mol-1(对照)对蝴蝶兰‘内山姑娘’净CO2吸收速率、生长和开花的影响。结果表明:蝴蝶兰属CAM植物类型,叶片净CO2吸收速率在22:00左右达到最大值,可滴定酸的积累在6:00左右达到顶峰。增施CO2显著提高蝴蝶兰夜间的净CO2吸收速率,并达到对照的两倍,可滴定酸的积累比对照增加44%。蝴蝶兰生物量的积累在增施CO2条件下也显著增加,植株干样和鲜样质量分别增加31%和28%。此外,增施CO2使蝴蝶兰的花期提前了5.4 d,提高了蝴蝶兰的产量和花部品质,其中花朵数比对照增加了66%。

关键词: 蝴蝶兰, 增施CO2, CO2吸收, 生长, 开花

Abstract: Effects of long-term elevated CO2 on net CO2 uptake,growth and flowering of Phalaenopsis‘Neishan Guniang’were studied under elevated CO2(800 ± 50)μmol ? mol-1 and ambient CO2 concentration(approximately 400 μmol ? mol-1)for 240 d. The results showed that Phalaenopsis was a CAM orchid with the net CO2 uptake rate and the contents of titratable acidity reached the maximum at 22:00 and 6:00,respectively. Elevated CO2 significantly increased the net CO2 uptake rate in Phalaenopsis leaves,which was almost arrived two-fold comparison of in the control,and the content of titratable acidity was increased 44% by CO2 elevated. Elevated CO2 resulted in the increase of the accumulation of biomass which increased by 31% in dry weight and 28% in fresh weight. In addition,elevated CO2 not only advanced the flowering time by 5.4 d in Phalaenopsis,but also increased flower quantity and quality,with the number of flowers increased by 66%.

Key words: Phalaenopsis, CO2 elevated, CO2 uptake, growth, flowering

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