三种草坪草的茎、叶解剖结构及其坪用性状

Anatomical Characters of Stems and Leaves of Three Lawn Grasses

摘要:

利川石蜡制片法,对台湾草（Zoysia tenuifolia Willd.ex Trin.）、海雀稗（Paspalum vaginatumSw.）、狗牙根[Cynodon dactylon（L.）Pers.]三种细叶暖季型草坪草的叶片及茎的解剖结构进行了研究。结果表明:叶片及茎的解剖结构与植物的耐旱性、耐践踏性和弹性等坪用特性有着密切联系。三种植物中,台湾草因叶片表皮细胞、泡状细胞、维管束鞘、机械组织及茎中纤维带的特征,而在耐旱性、耐践踏性和弹性等坪用特性上表现出优于其他二种草坪草:狗牙根的耐旱性较强,耐践踏性和弹性一般:海雀稗则在这几项坪用特性上均较弱。

Abstract:

The stems and blades of lawn grasses, Zoysia tenuifolia Willd. ex Trin., Paspalum vaginatum Sw. and Cynodon dactylon (L.) Pers., were anatomically studied. The structures of grass stems and blades showed close relation to the grass drought and trampling resistances, and elasticity. Among the three grasses, Z. tenuifolia was the best in drought resistance, trampling resistance and elasticity in terms of the epidermis, bulliform cells, bundle sheath, sclerenchyma of leaf, and the fibrous girdle of stem; C．dactylon was better in drought resistance，but poorer in tram pling resistance and elasticity：whereas P．vaginzttum was the worst in these characters．