Abstract
Qualitative and quantitative studies were done on leaf epidermal characteristics with special reference to stomatal features to find out the impact of environmental condition on twenty four accessions of Cynodon dactylon (L.) Pers. collected from different ecological habitats of Bangladesh. The foliar epidermal peels from both surfaces of mature leaves were observed under microscope. The leaves were found to be amphistomatic and stomata were paracytic type. The epidermal cells in this study were found to be sinuous. Silica bodies were found to be saddle and cross shaped. Prickles angular were pointed at the tip. Macro-hairs were present in all the accessions, but no micro-hair was found both adaxially or abaxially. Stomatal frequency and stomatal index were found to vary from accession to accession on both adaxial and abaxial surface of leaves, and the differences were statistically significant in most of the cases.
 Bangladesh J. Plant Taxon. 28(1): 171-193, 2021 (June)
Highlights
Cynodon dactylon (L.) Pers is a typical warm season turfgrass belongs to the family of Poaceae and this grass species is widely adapted to various environments of tropical and subtropical regions around the world
The present study is focused on the qualitative and quantitative leaf epidermal characteristics with special reference to stomatal features to find out the impact of environmental conditions on C. dactylon
Like almost all grasses stomata in C. dactylon are paracytic type earlier proved by Abid et al (2007)
Summary
Cynodon dactylon (L.) Pers is a typical warm season turfgrass belongs to the family of Poaceae and this grass species is widely adapted to various environments of tropical and subtropical regions around the world. There are some ways for genetic diversity and population structure analysis of C. dactylon like interphase nuclear phenotype and chromosomal characterization that are very useful parameters in distinguishing the cytotypes, accessions and even germplasm of a plant species (Nitu et al, 2019 a&b). In Poaceae leaf epidermal anatomy shows variations with a higher degree of specialization than that of any other family and provides extensive features of taxonomic importance. Leaf epidermal anatomical features like stomata and trichomes along with some other qualitative and quantitative characters are very much useful in perspective of morphological, ecological, physiological and taxonomical studies. The morphology and ontogenies of taxa are considered to be more important in case of intra-generic and intra-species systematics due to diversity of stomatal types. The most frequent stomata type is considered as taxonomic character
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