Five-day old transgenic seedlings grew longer hypocotyls. a, Three OE lines grew longer hypocotyls than WT and null-line plants. b, Lengths of hypocotyls and roots. Transgenic lines had longer hypocotyls, but there was no significant variation in root length among lines. Values are means ± SD (n = 9 - 14). Different lower case letters indicate significantly different means (p < 0.05).