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. 2000 Nov;12(11):2075–2086. doi: 10.1105/tpc.12.11.2075

Table 1.

Stomatal Spacing

% of Rings That Contained at Least One Guard Cell (Observed, Predicteda)b
Organ Ring 1 Ring 2 Ring 3
Cotyledon 0.5, 42c 73, 83 80, 98
First leaf 0.4, 45c 53, 75c 100, 99
a

See Methods for formula.

b

The first ring consisted of all cells adjacent to the selected stoma. The second ring included all cells in contact with and outside of the first ring, etc. A total of 300 first rings, 100 second rings, and 20 third rings were scored.

c

What was observed was significantly different from what was predicted (P < 0.05).