SCALE AND TUNIC MORPHOLOGY OF TULIPA AND FREESIA
The presence of stomates on inner and outer surfaces of tulip bulb scales and the tunics of tulip and Freesia and general morphological characteristics were examined with the scanning electron microscope. Corms of Freesia ‘Rossini’ and ‘Golden Wave’, and ‘Oxford’ tulip bulbs were used. Both Freesia cultivars revealed many stomates on their tunics. In contrast, tulip tunics had a lower number of stomates per unit area. All fleshy scales of tulip bulbs had stomates on both surfaces, with the exception of the innermost scale where no stomates were found. The physiological role of these stomates is discussed.
Kawa-Miszczak, L. and De Hertogh, A.A. (1992). SCALE AND TUNIC MORPHOLOGY OF TULIPA AND FREESIA. Acta Hortic. 325, 77-84