FIGURE 1.

Seed production (mean ± SE) of flowers subjected to different treatments in two populations (Lijiang: lower latitude, Huangyuan: higher latitude) of Halenia elliptica. Control, emasculation, netted, selfing, and ourcrossing indicate naturally pollinated flowers, emasculated flowers without netting in the bud stage, netted flowers without emasculation in the bud stage, hand selfing and hand outcrossing, respectively. Values with same letters indicate that the difference is not significant at the 0.05 level among different treatments, and asterisks indicate the difference is significant at the 0.01 level between the two populations.