Abstract

STUDIES ON STOMATA OF SOME SELECTED GRASS SPECIES OF POACEAE AND CYPERACEAE

*R. Hari Babu and N. Savithramma

ABSTRACT

Stomata are pores on leaf surfaces through which plant exchange CO2, water vapour and other constituents. The present study focus on the intrinsic variation in stomatal index and frequency was assumed in thirty poaceae and cyperaceae grass species. Quantitative microscopy of leaves, stomatal number, stomatal index, stomatal frequency and epidermal cell number were examined. Results of quantitative microscopy had show that stomata number, epidermal cell number, stomatal index and stomatal frequency 42, 184, 23 and 507 respectively in Poaceae grass species. While in Cyperaceae grass species showed highest in 28, 108, 20 and 308 respectively. Stomatal characters are among the epidermal characteristic, which have been very useful in taxonomic delimitation apart from the functional relevance of epidermal structures.

Keywords: Stomata, Grass, Poaceae and Cyperaceae