Table I.

Final leaf length, leaf elongation rate, and duration of leaf elongation of leaf 7 of the main stem for four Poa spp.

SpeciesFinal Leaf LengthLeaf Elongation RateDuration of Leaf Elongation
mm mm d−1 d
Poa alpina 41 ± 2a 6.5 ± 1.1a 5.9 ± 0.2ab
Poa compressa 81 ± 4bc 12.0 ± 1.4b 6.9 ± 0.3b
Poa annua 69 ± 4b 13.4 ± 1.6bc 5.3 ± 0.2a
Poa trivialis 98 ± 5c 16.1 ± 2.3c 5.8 ± 0.2ab

Results are the average of 15 plants ± se. The letters represent statistically homogenous subgroups (Tukey b post hoc test at α = 0.01 significance level). The parameters were calculated as described in “Materials and Methods.”