Fig. 5.

Effect of MeJA treatment on apex development in wild-type einkorn wheat (a–d) and spring wheat cv Manitou (e–h). Control and treated plants were grown at 20 ºC under long-day photoperiod (LD) conditions. Pictures of apex from dissected plants were taken before, during, and two weeks after MeJA treatment. (a, e) Apex of three-week-old wild-type einkorn wheat (a) or spring wheat Manitou (e) before treatment. (b–h) Control plants (sprayed with 0.1% tween 20 solution only) and treated plants (sprayed with 150 μM MeJA dissolved in 0.1% tween 20) were sprayed every day for one week (b, f) or two weeks (c, g); plants were then kept under the same growth conditions and apex pictures were taken two weeks (d, h) after the treatment. The scale bars are shown for each picture.