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Nitrate sensitivity during dormancy cycling of Arabidopsis (Cvi) in the field. (a) Germination in the light at 20°C ± 10 mM KNO3 in relation to changing dormancy level (AR50). (b) Expression of nitrate transporter (NRT1.1) and nitrate reductase (NR1). AR50, time to 50% after-ripening. Error bars, ± SEM, n = 3.
