Identification of pre-fertilization reproductive barriers and the underlying cytological mechanism in crosses among three petal-types of Jasminum sambac and their relevance to phylogenetic relationships
Fig 3
The fluorescent observation of pollen grains adhered on stigmas of jasmine three petal-types at different developmental stages.
(a) The single petal (SP) jasmine pistil in Stage 2 (i.e., partially opened flowers). The pollen grains were indicated by arrow heads. (b) The double petal (DP) jasmine pistil in Stage 2. The pollen grains were indicated by arrow heads. (c) The multi-petal (MP) jasmine pistil in Stage 1 (i.e., one day before flower partially opened). The pollen grains were indicated by arrow heads. (d) The SP jasmine pistil in Stage 4 (i.e., one day post flower fully opened). (e) The DP jasmine pistil of at Stage 4. The pollen grains were indicated by arrow heads. (f) The MP jasmine pistil in Stage 4. The pollen grains were indicated by arrow heads. Abbreviation: St, stigma