Study On Pollen Morphology Observation Of Lilium Spp.

Pollen morphology of five wild lilies and seven lily species of Lilium spp. wereexamined by the scanning electron microscopy (SEM). Studyed by pollen shape, size,ornamentation, aperture characteristic etc in order to analyze pollen-morphological characteristics of lilyspecies between different species and cultivars. The results are as follows:1The pollen grain of all the lilies are ellipsoidal or long ellipsoidal with single germinalfurrow except L. amoenum, however, the differences of exine ornamentation are significant.2L. brownie, L. brownii var. viridulum, L. regale, L. leucanthum, L. leucanthum var.centifolium, L. sulphureum, L. sargentiae, L. davidii and L. lancifolium clustered in the firstgroup and L. bakerianum, L. nepalense, L. duchartrei, L. pumilum and L. danidii var. unicolorbelonged to the second group while L. amoenum formed a distinct group using clusteringanalysis which is accordance with the morphological classification.3L. amoenum is obvious different from the others due to its tetrads, therefor L. amoenumis probable to form a subgroup belonging to Sect. Lophophorum based on the comprehensiveconsideration of morphology, distribution and phytopalynology. The diversity of pollenmorphology of wild lilies from western China are abundant, and it is meaningful forclarifying the classification of Lilium genus.4The shapes of seven lily cultivar were spheroidal or super-spheroidal, and the surfaceornamentation of them showed netted simplicolumellate and single pollen grains. However,there were some differences in mesh ridge width, mesh size and protuberances.5Selected in five wide lilies in Qinling Mountains of Shaanxi and7lily cultivar wereclustering analysis showed that Lilium davidii and Lilium pumilum were included in the firstgroup. The second group included Lilium lancifolium, Lilium leucanthum, Elite, Yelloween,Serrano and Concador. Lilium brownie, Sorbonne，Siberia and Marion belonged to the thirdgroup.