Epicuticular Lipid Accumulation on the Leaves of Lycopersicon pennellii (Corr.) D'Arcy and Lycopersicon esculentum Mill

Abstract
A comparison was made of epicuticular lipid accumulation on leaves of L. penellii and L. esculentum Mill. cv. VF36 from 5-16 wk of age. Epicuticular lipids were a small fraction of the leaf dry weight (0.16%) of 5-wk-old ''VF36'', and increased to only 0.96% of the leaf dry weight after an additional 12 wk of growth. Leaves from 5-wk-old and 17-wk-old L. pennellii plants had, respectively, 0.94% and 19.9% of their total dry weight in epicuticular lipid. Lipid accumulation was not affected by drought stress. Leaf position appears to influence the amount of lipid on the leaf surface. A glycolipid appars to be exuded from the terminal cell of glandular trichomes found on the leaves, stems, peduncles, calyxes and fruits of L. pennellii.

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