Relationship between leaf trichomes and stomatal traits and their adaptive variation in the common garden
The leaf trichome density was positively correlated with LMA and SD, but negatively with SS (Fig. 4) in situ. When different populations were grown in the common garden, leaf trichome density was significantly lower compared with in situ (Fig. 5). The trichome density in the common garden was positively associated only with SD (Fig. 6), while it had no relation with other leaf functional traits. Furthermore, no correlations between the trichome density and environmental factors at the original sites were observed.