Department of Horticulture and Forestry, Rutgers University, New Brunswick, New Jersey 08903.
Plant Physiol. 1983 Sep;73(1):46-50. doi: 10.1104/pp.73.1.46.
Tomato seedlings (Lycopersicon esculentum Mill. cv Vendor) were grown hydroponically with their root systems maintained at a constant temperature for a 2-week period commencing with the appearance of the first true leaf. Based on fresh and dry weight and leaf area, the optimal root-zone temperature for seedling growth was 30 degrees C. The carbon exchange rate of the leaves was also found to increase with rising root-zone temperature up to 30 degrees C. However, a more complex relationship seems to exist between root-zone temperature and the accumulation of (14)C-labeled assimilates in the roots; inasmuch as there is no enhancement in this accumulation at the most growth promoting root-zone temperatures (22-30 degrees C).
番茄幼苗（Lycopersicon esculentum Mill. cv Vendor）在根系恒温和水培条件下生长，从第一片真叶出现开始持续 2 周。基于鲜重、干重和叶面积，幼苗生长的最佳根区温度为 30℃。还发现叶片的碳交换率随着根区温度上升到 30℃而增加。然而，根区温度与（14）C 标记的同化产物在根系中的积累之间似乎存在更复杂的关系；因为在最有利于生长的根区温度（22-30℃）下，这种积累并没有增强。
