Germination rate at water potential treatment (MPa)

Poa species

50-seed weight (mg)

−0.8

−0.4

−0.2

0

annua

15.0 ± 0.22

4.2 ± 0.28 a^†

7.9 ± 0.28 b

9.1 ± 0.28 c

10.8 ± 0.28 d

arachnifera

16.8 ± 0.22

0.5 ± 1.02 a

1.9 ± 1.02 b

2.3 ± 1.02 b

3.6 ± 1.02 c

fendleriana

32.5 ± 0.22

0.8 ± 0.43 a

2.8 ± 0.43 b

3.1 ± 0.43 b

4.2 ± 0.43 c

pratensis

18.3 ± 0.22

2.9 ± 0.57 a

4.7 ± 0.57 b

5.1 ± 0.57 b

6.7 ± 0.57 c

secunda

29.1 ± 0.22

3.9 ±0.89 a

6.6 ± 0.89 b

7.1 ± 0.89 b

9.5 ± 0.89 c