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Triple response assay of NROE-1 and NROE-2, Nr mutant, and wild-type tomato seedlings. Seedling length is the sum of hypocotyl and root length. Seedlings were grown in the dark for 2 weeks on 1% (w/v) agar containing varying concentrations of ACC. Seedlings in the top panel are cv Floradade (●, NROE-1; ▴, NROE-2; □, wild type); seedlings in the bottom panel are cv Pearson (●, Nr; □, wild type).
