中文摘要：

用扫描电镜观察了豌豆根瘤的侵染细胞。结果表明,在这些细胞中有大量的细菌,它们主要是杆状细菌,其次是球形、Y形和T形细菌,其它形状的细菌很少。除了细菌形状不同外,还有一些细菌比较特殊,如有的细菌较长,菌体出现部分收缩并形成一个或一个以上的收缩环,其形状类似一条莲根;有的细菌很大,它的体积是普通细菌的2倍或2倍以上;有的细菌粗细不均匀,端部膨大,呈棒槌状。侵染细胞中有许多小泡,它们大小不同,呈球形。它们存于细菌之间,其中一些小泡还位于细菌的表面上,而且附近细菌的表面有时还有各种隆起。

英文摘要：

The infected cells in pea（Pisum sativum L.） root nodules were observed by scanning electron microscopy.Results showed that in the infected cells there were a large quantity of bacteria which were very different in shape.They were mainly rod-shaped bacteria,secondly,were spherical bacteria,often Y-shaped bacteria and T-shaped bacteria were also seen,but other shaped bacteria were a little.Besides the bacterial shape was not completely same,there still were some bacteria which were very special in these cells.Such as some bacteria were longer,often occurred contraction in one or some parts and formed one or more than one contractile rings,so its shape was like a lotus root;Some bacteria were specially large in size,it was 2 or more than 2 times of a general bacterium;two ends of some bacteria were not same thick and one end often swelled,its shape was similar to a wooden club.In these infected cells there were many vesicles which were different in size,but they all were sphere.They were located among bacteria,even some vesicles appeared on the surfaces of the bacteria,and there were many bacteria near them,sometimes the surfaces of these bacteria possessed various bulgings.