Soybean lectin (SBL) binding assays to different species of <i>Bradyrhizobium</i> and <i>Sinorhizobium</i>.

A+, dark purple spot; -, absence of coloured spot. BNod-, nodules are not formed; Fix-, ineffective or poorly effective nodules are formed; Fix+, effective nitrogen-fixing nodules are formed. CBacteria isolated from Beta vulgaris (sugar beet). DBacteria isolated from Pachyrhizus ahipa. EFix+ with some Asiatic soybean cultivars but Nod- or Fix- with the American soybean cv. Williams. FFix+ with some Asiatic soybean cultivars and also with the American soybean cv. Williams. GBroad host range S. fredii strain isolated from nodules of Lablab purpureus. Nod- with all soybeans tested. Soybean lectin (SBL) binding assays to different species of Bradyrhizobium and Sinorhizobium.