“…There are many reports on physical and physiological character traits of the most economically important legumes (Nadeem et al, 2019; Xiong et al, 2020). In particular, root density, root depth, and nodule traits have been widely reported for soybean ( Glycine max ) (Fried, Narayanan, & Fallen, 2019; Kulkarni et al, 2017; Wu, Qiu, Yang, Wu, & Zhao, 2007), common bean ( Phaseolus vulgaris ) (Figueiredo, Burity, Mart, & Chanway, 2008; German, Burdman, & Okon, 2000; Ferreira, Carvalho, Andrade, & Moreira, 2018), peanut ( Arachis hypogaea ) (Nigam, Dwivedi, Nambiar, Gibbons, & Dart, 1985; Pimratch et al, 2008), chickpea ( Cicer arietinum ) (Chen, Ghanem, & Siddique, 2017; Ramamoorthy, Lakshmanan, Upadhyaya, Vadez, & Varshney, 2017), lentil ( Lens culinaris ) (Chanway, Hynes, & Nelson, 1989; Kumar et al, 2012), alfalfa ( Medicago sativa ) and clovers ( Trifolium spp.) (Bell, 2005; Goh, Nicotra, & Mathesius, 2016).…”