Study on stomata of some aromatic plants
1996
Surasak Permlap
Stomatal study of some aromatic plants was conducted in 123 species, 50 families. The purpose of this research were to study its appearance, distribution, arrangement, density, size and types. The study was compared between sun and shade leaves to determine whether light intensity has any influence on stomatal structures. Both of them have three type of stomata, namely: 99 species were hypostomatic leaf having stomata only on the lower epidermis, 2 species were epistomatic leaf having stomata only on the upper epidermis and 22 species were amphistomatic leaf having stomata on both surfaces, except their midribs and veins. The stomata of each type were distributed and arranged on the leave surface similarly. The distribution was all over the blade and the arrangement was nondimensional according to the stomatal pore orientation. The number of stomata per square millimeters of leave surface differed in the lower and upper epidermis ranging from 1.18-947.97 and 21.89-739.64, respectively. The difference depended on species and environment. Besides, stomata number in the lower surface showed larger number than that in the upper ones and the stomata of sun leaves had stomata number more than the shade ones. The stomata of upper and lower surface differ in size, especially, the upper one was mostly bigger than the lower one. Despite the same leaf, the size of stomata is also different. Finally, That there were five types of the stomata in aromatic plants under this study as follow: 53 species were anomocytic, 3 species were cyclocytic, 1 species was diacytic, 64 species were paracytic and 2 species were parallelocytic type. Each species was found to have only one type of stomata, being the same on both surfaces.
Mostrar más [+] Menos [-]Palabras clave de AGROVOC
Información bibliográfica
Este registro bibliográfico ha sido proporcionado por Kasetsart University