Direct measurement of stomatal cell production in barley.

A simple method which measures stomatal cell production directly in the first leaf of barley is described. The method was tested with three barley genotypes, two of which, cer-g (11) and cer-g (1026), are mutants with an abnormal stomatal pattern. Cer-g (11) had a slower rate of stomatal cell formation, as compared with the other two genotypes.