The nodules formed on the roots of soybean plants are referred to as 'determinate' nodules. They are spherical and lack a persistent meristem, unlike indeterminate nodule structures that can form on other legume species, particularly those from temperate growing regions (Ferguson et al., 2010).

Do soybeans have root nodules?

Once the roots are removed, the nodules can be identified as small round growths on the soybean root. A properly nodulated soybean plant should contain between 25 and 100 nodules. ... If the nodules are red, pink or orange, then they are actively fixing N and are beneficial to the plant Figure 2.

Which bacteria grows on the root nodules of soybean?

Soybean has a unique symbiotic relationship with Rhizobia, providing a remarkable nitrogen-fixing capability in root nodules [19]. Several Rhizobia species including Bradyrhizobium japonicum, B.