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[2]
Lateral root frequency decreases when nitrate accumulates in tobacco transformants with low nitrate reductase activity: consequences for the regulation of biomass partitioning between shoots and root1[J] . Mark Stitt,Regina Feil.Plant and Soil . 1999 (2)
[3]
Influence of the nitrogen level on root growth and morphology of two potato varieties differing in nitrogen acquisition[J] . B. Sattelmacher,F. Klotz,H. Marschner.Plant and Soil . 1990 (2)