Evaluation of pollen viability and fertility of triploid herbaceous peony cultivars

摘要：

　　To fully understand the breeding potential of triploid herbaceous peony cultivars, and to promote the development of new peony cultivars and extend their culture in China, three triploid cultivars,'Brightness','Roselette'and'Coral Sunset',were selected to investigate their pollen viability and fertility.In addition,fluorescence microscopy was used to observe pollen germination and pollen tube growth on the stigma of the domestic diploid cultivar'Fen Yu Nu', which was used as the female parent of the three triploid cultivars.Our results show that pollen viability of the three triploid cultivars was very low, being highest (6.7%) in'Brightness' and lowest (2.2%) in'Coral Sunset', and that the pollen grains of the three triploid cultivars had a very low germination rate on the maternal stigma, caused by very short pollen tubes that could not penetrate the stigma.Profuse callose was found in papillose cells of the stigma and pollen tubes and a large number of pollen grains detached from the stigma.Compatibility in interspecific hybridization of the same section of Paeonia is very low.

关键词： Paeonia lactiflora hybridization pollen germination pollen tube fluorescence pre-fertilization barrier

作者: Y.J.Wang J.A.Teixeira da Silva J.X.Liu Y.M.Lu X.N.Yu

作者单位: Beijing Forestry University, College of Landscape Architecture, Beijing, China PO Box 7, Miki-cho Post Office,Ikenobe 3011-2, Kagawa-ken, Japan Beijing Forestry University, College of Landscape Architecture, Beijing, China;Beijing Key Laborator

会议类型: 国际会议

会议名称: The XII International Symposium on Flower Bulbs and Herbaceous Perennials(第12届国际球宿根花卉学术研讨会)

会议地点: 昆明

会议语种:英文

页码: 137-142

在线出版日期: 2016-06-28（万方平台首次上网日期，不代表论文的发表时间）