Rhizobiumstrain × host genotype interactions for white clover(Trifolium repensL.) genotypes with different aluminium tolerances

Abstract

Growth of two aluminium (Al)-tolerant white clover (Trifolium repens L.) genotypes and two Al-susceptible genotypes, inoculated with four different Rhizobium leguminosarum bv. trifolii strains, was compared in sterile sand culture. There were no host genotype x Rhizobium strain interactions, probably because of the narrow genetic origin of the plants tested. It is concluded that as long as the programme to breed a synthetic Altolerant clover cultivar is restricted to a narrow genetic base, then co-selection of plant and microbial symbiont is unnecessary.

Evaluation of aluminium‐tolerant white clover(Trifolium repens)selections on East Otago upland soils

“…Lack of expression of the trait in the field must mean that other factors determining the fitness of white clover were more important than Al tolerance. Nodulation failure was not likely to have caused the generally poor growth because the plants were inoculated during propagation in the glasshouse, and previous work has shown no plant genotype x Rhizobium strain interactions within the Al selections (Crush 1994).…”

Major effect loci for plant size before onset of nitrogen fixation allow accurate prediction of yield in white clover

“…Many examples of successful inoculation have been reported in locations where the natural occurrence of Rhizobium leguminosarum sv. trifolii white clover symbionts is low (Irisarri et al, 2019;Lowther & Kerr, 2011; M. M. Svenning et al, 2001;Young & Mytton, 1983), and a number of examples of white clover-rhizobium interactions that affect yield exist (Mytton, 1975; Mette M. Svenning et al, 1991;Young & Mytton, 1983), although other studies reported only small effects or no such interactions (Crush, 1995).…”

Major effect loci for plant size before onset of nitrogen fixation allow accurate prediction of yield in white clover

“…trifolii white clover symbionts is low (Irisarri et al, 2019;Lowther & Kerr, 2011;M. M. Svenning et al, 2001;Young & Mytton, 1983), and a number of examples of white clover-rhizobium interactions that affect yield exist (Mytton, 1975; Mette M. Svenning et al, 1991;Young & Mytton, 1983), although other studies reported only small effects or no such interactions (Crush, 1995).…”