Genetic variability in arbuscular mycorrhizal fungi compatibility supports the selection of durum wheat genotypes for enhancing soil ecological services and cropping systems in Canada
- 1 March 2012
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Microbiology
- Vol. 58 (3), 293-302
- https://doi.org/10.1139/w11-140
Abstract
Crop nutrient- and water-use efficiency could be improved by using crop varieties highly compatible with arbuscular mycorrhizal fungi (AMF). Two greenhouse experiments demonstrated the presence of genetic variability for this trait in modern durum wheat ( Triticum turgidum L. var. durum Desf.) germplasm. Among the five cultivars tested, ‘AC Morse’ had consistently low levels of AM root colonization and DT710 had consistently high levels of AM root colonization, whereas ‘Commander’, which had the highest colonization levels under low soil fertility conditions, developed poor colonization levels under medium fertility level. The presence of genetic variability in durum wheat compatibility with AMF was further evidenced by significant genotype × inoculation interaction effects in grain and straw biomass production; grain P, straw P, and straw K concentrations under medium soil fertility level; and straw K and grain Fe concentrations at low soil fertility. Mycorrhizal dependency was an undesirable trait of ‘Mongibello’, which showed poor growth and nutrient balance in the absence of AMF. An AMF-mediated reduction in grain Cd under low soil fertility indicated that breeding durum wheat for compatibility with AMF could help reduce grain Cd concentration in durum wheat. Durum wheat genotypes should be selected for compatibility with AMF rather than for mycorrhizal dependency.Keywords
This publication has 44 references indexed in Scilit:
- The arbuscular mycorrhizal symbiosis links N mineralization to plant demandMycorrhiza, 2008
- Mycorrhizal and non-mycorrhizal Lactuca sativa plants exhibit contrasting responses to exogenous ABA during drought stress and recoveryJournal of Experimental Botany, 2008
- Plant responsiveness to mycorrhizas differs from dependence upon mycorrhizasMycorrhiza, 2007
- Commander durum wheatCanadian Journal of Plant Science, 2005
- Response of strawberry to inoculation with arbuscular mycorrhizal fungi under very high soil phosphorus conditionsMycorrhiza, 2005
- Strongfield durum wheatCanadian Journal of Plant Science, 2005
- Magnolioid roots – hairs, architecture and mycorrhizal dependencyNew Phytologist, 2004
- Concentrations of K, Ca and Mg in maize colonized by arbuscular mycorrhizal fungi under field conditionsCanadian Journal of Soil Science, 2002
- Response of spring wheat cultivars to Glomus clarum NT4 in a P-deficient soil containing arbuscular mycorrhizal fungiCanadian Journal of Soil Science, 1998
- Mycorrhizal relations in trees for agroforestry and land rehabilitationForest Ecology and Management, 1996