Table I.

Gland development in seedlings grown on different levels of Suc and nitrate

The symbols + and − indicate the presence and absence of gland, respectively, at the end of 2 months. The asterisk (*) indicates that callus-like tissue formed where glands would have been expected to appear. The number of plants observed in each condition is shown in parentheses.

NitrateSucrose
00.52.5
mm%
0+ (10)+ (14)+ (12)
0.1+ (7)+ (9)+ (19)
10.0− (14)− (14)* (12)