Subjects: Biology >> Botany >> Applied botany submitted time 2019-08-26 Cooperative journals: 《广西植物》
Abstract： Jiucaiping is the largest wild leek flower belt in the world,which is the only wild leek flower reserve in the country. In order to explore pollination biology and ecological adaptation of Allium wallichii, we conducted the following experiments: observed the flowering period, flower visitors and nectar, estimation of breeding system by artificial pollination, the composition of secondary metabolites in each part was determined by gas chromatography, detection of the significant to bee vision in color by ocean spectrometer. The results show that A. wallichii is protandry, the single flowering stage is 7~8 days, and the continuous flowering time of inflorescence is 25~8 days. The amount of nectar is 0.61±0.07 μL. Apis cerana is the main effective pollinator. The results of the ocean spectrometer showed that purple flower was more significant to bee vision in leaves. There was a significant difference in flower visit frequency among different flower colors, while there was no difference in single flower visit frequency. When the two colors were present at the same time, the bees will give priority to the purple flowers, due to the influence of smell, when visiting purple flowers, most bees also visited adjacent white flowers. The results of secondary metabolites analysis of A. wallichii showed that stems, ovaries and pedicels contained a variety of irritating sulfur metabolites, while the flower organs and nectar had a variety of secondary metabolites of floral fragrance. Its sexual reproduction was self-matting and cross-mating mixed mating system with apomixis. In summary, there is no pollen restriction of A. wallichii in this area, which reproductive characteristics have good environmental adaptability. This study laid a foundation for resource protection and breeding regulation of A. wallichii.
Hits
Hits
Downloads
Comment