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Table 3 Variations in grain N content and grain yield for different genotypes and species in three experiments

From: Testing deep placement of an 15N tracer as a method for in situ deep root phenotyping of wheat, barley and ryegrass

ExpSpeciesGenotypeGrain yield (Mg DM ha−1)Grain N content (kg ha−1)
0.87–1.74 m soil depth1.74–2.61 m soil depth0.87–1.74 m soil depth1.74–2.61 m soil depth
1Winter wheatHystar9.3 a7.7 a95.7 a81.2 a
Tabasco8.0 b6.4 a96.7 a76.5 a
ExpSpeciesGenotype0.53–1.09 m soil depth1.09–1.66 m soil depth0.53–1.09 m soil depth1.09–1.66 m soil depth
2Spring barleyEvelina4.6 a3.8 a54.2 a44.6 b
Laurikka5.5 a5.3 a64.5 a62.0 a
ExpSpeciesGenotype0.87–1.74 m soil depth1.74–2.61 m soil depth0.87–1.74 m soil depth1.74–2.61 m soil depth
3Spring barleyLaurikka6.1 ab6.5 a73.9 a81.3 ab
Kenia5.4 b5.3 b71.0 a67.9 b
Evergreen6.0 ab7.1 a73.3 a92.4 a
Evelina6.4 ab6.7 a89.9 a93.0 a
Invictus7.0 a7.5 a83.6 a96.4 a
Prisma6.1 ab7.0 a72.9 a86.5 a
Tocada7.3 a7.6 a85.2 a94.4 a
  1. Grain N content and grain yield were measured for crops that grew at different soil depths. Different lowercase letters indicate significant genotypic differences at P < 0.05