Variability of pollen aperture heteromorphism in annual pansies (Viola Section Melanium)

[摘要] Pollen heteromorphism is frequent in the section Melanium of the genus Viola, in which over 80% of the species produces pollen morphs with 3 to 6 apertures. Some authors have pointed out that many factors can affect the proportion of the...

[学科分类] 植物学