Morphological and Genetic Diversity of Rhizobia Nodulating Cowpea (Vigna unguiculata L.) from Agricultural Soils of Lower Eastern Kenya

Figure 1

Gram-negative reaction and growth response of rhizobia isolates on YEMA medium containing Congo red. Gram-negative reaction of a fourteen-day-old rhizobia isolate (a); colonies of rhizobia isolate on YEMA media with Congo red (b) and without Congo red (c).

(a)

(b)

(c)