Nodeweed (Synedrella nodiflora (L.) Gaertn.) is the only member of genus Synedrella, which is widely distributed over many tropical countries. It has been reported as potentially having many benefits for human life, but it is also commonly found as broad-leaf weed in several crops. In addition to its wide distribution, this species can also grow in a wide range of altitudes. This study was aimed to assess molecular profile of S. nodiflora in three different levels of altitudes, i.e. 0, 130, and 800 m above sea level respectively. Intergenic spacer (IGS) atpB – rbcL was used as the molecular marker. It was shown that no genetic difference among samples from the three altitudes was observed, indicating that any difference that may appear in the phenotype is merely due to morphological and/or physiological adaptation.

Nodeweed ( Synedrella nodiflora (L.) Gaertn.) 是Synedrella属的唯一成员，广泛分布于许多热带国家。据报道，它可能对人类生活有许多益处，但它也常见于几种作物中的阔叶杂草。除了分布广泛外，该物种还可以在很宽的海拔范围内生长。本研究旨在评估S. nodiflora在三个不同海拔高度，即海拔0、130 和800 m 的分子谱。基因间间隔区 (IGS) atp B – rbcL用作分子标记。结果表明，三个海拔高度的样本之间没有观察到遗传差异，这表明表型中可能出现的任何差异仅仅是由于形态和/或生理适应。