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Characterization and selection for phosphorus deficiency tolerance in 99 spring wheat genotypes in Montana
- Epie, Kenedy Etone, Etesami, Maral, Ondoua, Roger Nkoa
- Journal of plant nutrition 2019 v.42 no.6 pp. 595-603
- chromosome mapping, genetic variation, genotype, grain yield, organic foods, phosphorus, plant height, soil, spring wheat, Montana
- Phosphorus (P) deficiency in soil is a common spring wheat production-limiting factor in Montana. In a pot experiment, three groups of spring wheat genotypes based on source (association mapping, 2016 off-station, and nested association mapping) were grown in 5 (P5) and 30 (P30) mg P kg⁻¹ potting mix conditions and screened for P deficiency tolerance. Plant height, tiller and head number, grain yields per pot measured were significantly different between P5 and P30 conditions (p < .05). Spring wheat genotypes: Unity, Peace, Vida, Reeder, CLTR 15134, ONeal and Fortuna yielded more grains, and equally took up more P in P5 conditions, revealing some degree of P deficiency tolerance. The genetic variability identified in this study for grain yields and P uptake could be used in wheat improvement programs for selecting genotypes with low P tolerance in P deficient soils as well as in organic spring wheat production.