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Response of roots to IAA and NPA. (A) Number and (B) average length of secondary roots of 7-day-old wild-type pea (cv. Torsdag) and ein2 plants treated with either 1mM IAA or 50mM NPA, or left untreated. Mean±SE (n=9). Within each panel, values with different letters above the bars are significantly different at P<0.05.
