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作 者 ：刘家琼

期 刊 ：生态学报 1983年 3卷 1期 页码：15~20

关键词：珍珠；

摘 要 ：一、珍珠的形态 珍珠(Salsola passerina),又名珍珠猪毛菜、雀猪毛菜,为藜科猪毛菜属植物,属亚洲中部特有成分(中国植被编辑委员会编著,1980)。小半灌木,株高15—30厘米,多为20厘米左右。茎粗壮,分枝多,呈丛状生长(图版Ⅰ:1);老枝灰褐色,幼枝黄褐色。肉质叶,小,长2.5—3毫米,宽约2毫米,呈锥形或三角形;穗状花序,着生于枝条上部,花小,直径只有几毫米，呈黄褐色或浅紫红色；种子圆形，胚螺旋状。根系较深，其深率相当于地上部分的3-4倍。

Abstract:The extreme xerophytes. Salsola passerina, has a series of character of drought resistance about morphology, anatomy and physiology of water. Salsola passerina has dense epidermal hairs on their leaves, their epidermal cells of leaves are plump, stomata are hollow deeply, water storage tissue is developmental. During whole growth season, there are very low potential water (-49.94 bar), very high both of total water and bound water (310.0-300.7 percentage of dry weight), very high ratio of bound water/free w...

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