通过相关分析、逐步回归和通径分析，表明地下茎单位长度重量和直径可以作为鱼腥草高产育种的主要选择性状。

The results showed that the proportion of weight and length of subterranean stem and the diameter of subterranean stem could be taken as selection characters for high yield.

地下茎呈匍匐状水平斜向伸长。

Subterranean bine shows procumbent record level inclined to stretchy.

竹类地下茎解剖结构的研究。

Anatomical studies on the bamboo rhizomes.

但是草不会被大火烧尽。它们的地下茎完好无损。

But the grasses are not dead. Their underground stems are unharmed.

地下茎加粗过程中形成三生结构，其异常结构是由于次生韧皮部外侧发生的额外形成层所致，其起源于薄壁细胞；

The growth of hypogeal stem contain tri-growth, and the anomalous secondary growth is the result of supernumerary cambium that derived from the outmost elements of secondary phloem.

一种无色的质体，不含叶绿素和任何其它色素。白色体多存在于根部细胞、地下茎和储藏器官中。

Leucoplast A colorless PLASTID, i. e. one not containing chlorophyll or any other pigment. Leucoplasts are common in the cells of roots and underground stems and storage organs.

通过对不同休眠状态的热带睡莲地下茎，在不同消毒处理和不同的藏沙湿度下进行了越冬沙藏试验。

The experimentation of overwintering tropical waterlily tubers was carried out by different dormant phases of tropical waterlily tubers, different disinfection levels and different sand humidity.