title: [Preliminary study on breeding system of Prunella vulgaris].
abstract: The research was conducted to study the breeding system of Prunella vulgaris L. Flowering dynamics was observed. Pollen viability, stigma receptivity, pollen-ovule ratio (P/O), out-crossing index (OCI) were measured. Bagging experiments were conducted. The results showed that the life span of one single flower was 1-2 days, the flowering span for the inflorescence of stalk was 7-14 days, the P/O was 1 046+/-148. 26, the OCI was 2. Combined with results of bagging experiment, the breeding system of P. vulgaris L. was mixed with cross-polination and self pollination. In the absence of pollination insects, the pollination and fertilization can be accomplished with high seed setting rate, and the seeds have a relatively high germination rate.
authors.affiliation: Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: De-Qian
authors.initials: DQ
authors.lastname: Wan
authors.forename: Qiao-Sheng
authors.initials: QS
authors.lastname: Guo
authors.forename: Li
authors.initials: L
authors.lastname: Liu
authors.forename: Wei
authors.initials: W
authors.lastname: Yang
authors.forename: Man
authors.initials: M
authors.lastname: Zhou
authors.forename: Yi-Min
authors.initials: YM
authors.lastname: Li
mesh_terms: D001947:Breeding; D011058:Pollen / Q000254:growth & development / Q000502:physiology; D054817:Pollination; D031347:Prunella / Q000254:growth & development / Q000502:physiology*; D014022:Tissue Survival