FIG. 3.

Shoot dry weights of peas inoculated with various strains of R. leguminosarum. Dry weights were determined after 6 weeks of growth. Strains are shown with their genotype in parentheses. Twenty-eight plants were used for Rlv3841, 26 were used for RU3941, and 16 were uninoculated; for all other strains, 7 plants were used. All treatments were compared by t test, and results were significantly different from those for Rlv3841 (P < 0.05) except in the cases of RU3941 and RU4009. Values are means ± SEM.