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SUMMARY The influence of rooting‐medium temperatures (maintained constant for 54 days from sowing) on tomato seedling growth was exerted primarily on development during the first 2 weeks after sowing, when an optimum emerged at 25 °C. This influence was attributable to an effect of temperature on the partitioning of dry matter between root and shoot during a few days before and after the start of photosynthesis. The adverse effect of suboptimal (but not supra‐optimal) temperature was also associated with a reduction in the phosphorus content of the tissue, there being little effect on either nitrogen or potassium content.
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A. J. Cooper (1973) studied this question.
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