Micromorphology of Leaf Epidermis of Phleum

doi:10.7525/j.issn.1673-5102.2016.06.005

Abstract

Abstract: The micromorphology of the leaf epidermis for 35 species and 2 varieties belonging to Phleum and its related genera of Poaceae were examined by scanning electron microscope. The intercostal long cells on both abaxial and adaxial epidermis of Phleum were long tubular or rhomboid, and the outlines of long cells were straight or curved. The shapes of silica cells in costal zones were nodular. Parallel-sided subsidiary cells were found. Prickles were frequently occurred in costal zones and absent or rarely seen in intercostal zones. No papillaes and micro-hairs were found. Meanwhile, a phylogenetic tree was constructed according to the characters of leaf epidermal micromorphology. Phleum and Poeae clustered together, which indicated that they had the closer relationship and distantly related to Aveneae, Agrostideae and Phalarideae. According to the micromorphology of leaf epidermises. Phleum should place into Poeae.

Key words: Phleum, leaf epidermis, micromorphology, SEM

CLC Number:

WANG Yan-Hong, ZHANG Xue-Jie, FAN Shou-Jin. Micromorphology of Leaf Epidermis of Phleum[J]. Bulletin of Botanical Research, 2016, 36(6): 827-837.

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