山东滨海盐生植物根结构及通气组织的比较研究

对山东滨海14种盐生植物的根及根中的通气组织进行了解剖不的比较研究。研究表明：除了少数植物的根中产生发达的机械组织，通气组织不发达以外，绝大多数植物的根中都具有发达的通气组织。这些通气组织的胞间隙非常明显，形成多个通气道，特别是一些根状茎，平卧茎发达的植物，如沙滩黄芩（Scutellaria strigillosa Heml.)，海边香豌豆(Lathyrus maritimus(L.)Bigel.），肾叶打碗花（Calystegia,soldanella(L.)R.Br.)，其通气道较大。胞间隙的发生主要有二种情况；（1）裂生胞间隙；（2）溶生胞间隙，这是大多数胞间隙形成的方式。通气组织大多分布于靠近表皮的皮层和靠近周皮的次生韧怪部中，即位于保护组织的内侧。

Comparative Studies on the Root Structure and Aerenchyma of Maritime Halophyte in Shandong

Comparative studies on the anatomical structure of the roots and its aerenchyma of 14 varieties of maritime halophyte were carried out.The results are as follows:there are well_developed mechanical tissues in 5 plants namely Corispermum puberulum Iljin., Salsoda komarovii Iljin., Suaeda glauca (Bunge.) Bunge., Dianthus chinensis L. and Cynanchum thesioides (Freyn) K. Schnm. No aerenchyma was found in these plants except for Suaeda glauca (Bunge.)Bunge. In the other 9 plants there are well_developed aerenchyma foxming many air passages. Some plants,such as Scutellaria strigillosa Heml., Lathyrus maritimus (L.) Bigel. and Calystegia soldanella (L.) R. Br., have bigger air passages than others. And these plants have either rhizome or horizontal stem. There are two types of intercellular space, schizogenous space and lysigenous space.The aerenchyma is distributed mainly in the cortex and secondery phloem.