肉质植物剑麻对高浓度 CO2 的生长响应。
Growth Response of a Succulent Plant, Agave vilmoriniana, to Elevated CO(2).
机构信息
United States Water Conservation Laboratory, Phoenix, Arizona 85040.
出版信息
Plant Physiol. 1986 Mar;80(3):796-7. doi: 10.1104/pp.80.3.796.
Large (about 200 grams dry weight) and small (about 5 grams dry weight) specimens of the leaf succulent Agave vilmoriniana Berger were grown outdoors at Phoenix, Arizona. Potted plants were maintained in open-top chambers constructed with clear, plastic wall material. Four CO(2) concentrations of 350, 560, 675, and 885 microliters per liter were used during two growth periods and two water treatments. Small and large plants were grown for 6 months, while a few large plants were grown for 1 year. Wet-treatment plants received water twice weekly, whereas dry-treatment plants received slightly more water than they would under natural conditions. Plant growth rates in all treatments were significantly different between small and large specimens, but not between 6 month and 1 year large plants. Only the dry-treatment plants exhibited statistically different growth rates between the CO(2) treatments. This productivity response was equivalent to a 28% and 3-fold increase when mathematically interpolated between CO(2) concentrations of 300 and 600 microliters per liter for large and small plants, respectively.
在亚利桑那州凤凰城，室外种植了大型（约 200 克干重）和小型（约 5 克干重）的龙舌兰属植物叶片肉质体。盆栽植物保存在由透明塑料壁材料制成的开顶式气室中。在两个生长时期和两种水分处理条件下，使用了 4 种 CO2 浓度（分别为 350、560、675 和 885 微升/升）。小型和大型植物分别生长了 6 个月，而一些大型植物生长了 1 年。湿处理植物每周浇水两次，而干处理植物的浇水略多于自然条件下的浇水。在所有处理条件下，小型和大型标本的植物生长率均有显著差异，但 6 个月和 1 年大型植物之间没有差异。只有干处理植物的 CO2 处理之间表现出统计学上的不同生长率。当分别对大型和小型植物的 CO2 浓度在 300 和 600 微升/升之间进行数学内插时，这种生产力响应相当于分别增加了 28%和 3 倍。
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