ABSTRACT Natural root grafting is a well-known phenomenon in perennial tree species. This study examined whether root grafting is possible between the same and different annual crop species without any surgical action by using an instrument with a narrow and tight rooting passage to evaluate the application of natural root grafting. A part of the epidermal cell layer disappeared and cortex tissues of two individual plants became fused together in most of species examined. When two different species were grafted, sequential images proved that whole cowpea tap root was inserted into the cortex layer of mung bean. These results indicated that natural root grafting of annual crop species without any surgical action is possible when the two growing roots come in contact with each other in a narrow and rigid rooting channel. Graphical Abstract

中文翻译：

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窄根通行仪在一年生作物上自然根嫁接的应用

摘要 自然根嫁接是多年生树种众所周知的现象。本研究通过使用具有狭窄而紧密的生根通道的仪​​器来评估自然根嫁接的应用，研究是否可以在不进行任何手术操作的情况下在相同和不同的一年生作物物种之间进行根嫁接。在大多数检查的物种中，部分表皮细胞层消失，两个单独植物的皮层组织融合在一起。当嫁接两个不同的物种时，连续图像证明整个豇豆主根插入绿豆的皮质层。这些结果表明，当两个生长的根在狭窄而坚硬的生根通道中相互接触时，一年生作物的自然根嫁接是可能的，无需任何手术操作。图形概要