FIGURE 6.

Dispersal patterns of heteromorphic seeds of S. ferganica surrounding mother plant in natural habitat or under control wind force in laboratory. Four circles with radius of 0.2, 0.5, 1.0, and 3.0 m were established around each mother plant, the number of seeds dispersed into each circle were recorded and the proportion of heteromorphic seeds in mother plant was calculated. (A) Percentage of heteromorphic seeds dispersed into different zones surrounding mother plant in natural habitat. (B) Schematic diagram of dispersal pattern of heteromorphic seeds. L, M, S: large, middle, small seed. 0.2, 0.5, 1.0, and 3.0 m: circles with radius of 0.2, 0.5, 1.0, and 3.0 m. (C–E) Artificial seed dispersal experiment, showing ten thousand of heteromorphic seeds were dispersed into four different radius circles at 0.2, 0.5, 1.0, and 3.0 m in laboratory, and the proportion of heteromorphic seeds was calculated. 1.8–3.3, 3.4–4.2, and 4.3–5.5 m⋅s^-1: different level of wind velocity. ^∗ represents the value of zero. Bars with different lowercase letters indicate significant differences (P < 0.05) according to the Tukey’s test. Values are means ± SE of six replicates in (B), or four replicates in (C–E).