Trichomes Tuber

King, R. R., Calhoun, L. A., and Singh, L. A. 1988. 3,4-Di-O- and 2,3,4-tri-O-acylated gluco-side esters from the glandular trichomes of non-tuberous Solanum species. Phytochemistry 27 3765-3768. 

Jerusalem artichoke stems can grow to 3 m or more in height, though most clones are shorter. Dwarf clones have been selected (Zubr and Pedersen, 1993). The stems are stout and heavily trichomed when young. Initially the stems are quite succulent but become woody over time. Branches vary in number and position on the main stems. The stems arise directly from the seed tuber, with branches forming at nodes on the stem. Basal branches may form underground and at the soil surface appear to be stems hence, estimates of stem number per plant are variable. 

Di- and l,2,3-tri-Q-hexanoyl- -D-glucopyranose were the principal components in the exudate from glandular trichomes of Datura jmetel (Solanaceae), whereas the glandular trichomes of certain non-tuberous Solanum species furnished mainly 2-Q-acetyl-... 

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