Figure 4
From: Seed germination of Agave species as influenced by substrate water potential
Effect of the substrate water potential on the rate of Agave spp. seed germination (1/t 50 ). A. americana var. marginata ●, A. asperrima ○, A. cupreata ■, A. duranguensis □, A. lechuguilla ▲, A. salmiana Δ and A. striata ♦. Lines indicate the water potential effect on the evaluated attribute, predicted by linear functions. The vertical bars indicate one standard error, n = 50.