|Comparison of floral properties and breeding system in dimorphic Buddleja delavayi (Scrophulariaceae)|
|Chen, Gao; Gong, Wei-Chang; Ge, Jia; Niu, Yang; Zhang, Xin; Dunn, Bruce L.; Sun, Wei-Bang; Sun,WB (reprint author),Chinese Acad Sci,Kunming Inst Bot,Kunming Bot Garden,Kunming 650204,Peoples R China.; email@example.com
|发表期刊||JOURNAL OF SYSTEMATICS AND EVOLUTION
|摘要||In this study, floral color, scent composition and emission rate, nectar property, pollinators, and breeding system of dimorphic Buddleja delavayi Gagnep. were investigated. Flower color of B. delavayi was determined using a standard color chart and spectrophotometer, and two distinct color polymorphisms were observed having purple or white flowers. Floral scents of B. delavayi were collected using dynamic headspace adsorption and identified with coupled gas chromatography and mass spectrometry. In total, 28 compounds were identified from the flowers of B. delavayi. The identified scents were divided into three chemical classes based on their biosynthetic origin: terpenes, fatty acid derivatives, and benzenoids. The scent profiles in all individuals were dominated by a few components, such as lilac aldehyde and alcohol, 4-oxoisophorone, benaldehyde, and oxoisophorone oxide. Floral scent composition (benzenoids and terpenes) showed a significant difference between white and purple flower morphs. Flower color-flower scent associations in B. delavayi were identified with two distinct scent profiles in the two color phenotypes. The studies of other floral characteristics (nectar, floral visitors, breeding system, and fruit set) indicated that floral scent emission rate, nectar volume, visitor visitation frequency, and natural fruit set were not significantly different between the two flower color morphs. Bagging experiments revealed that seed production of B. delavayi is dependent mainly on honeybee Apis cerana. Lastly, this study implies that dimorphic floral color in B. delavayi may have been maintained by floral visitors and nectar guide color.|
|资助信息||National Natural Science Foundation of China [NSFC31100177, U13022149]; West Doctor Foundation of Chinese Academy of Sciences|
|通讯作者||Sun,WB (reprint author),Chinese Acad Sci,Kunming Inst Bot,Kunming Bot Garden,Kunming 650204,Peoples R China.; firstname.lastname@example.org|
Chen, Gao,Gong, Wei-Chang,Ge, Jia,et al. Comparison of floral properties and breeding system in dimorphic Buddleja delavayi (Scrophulariaceae)[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2015,53(2):196-202.
Chen, Gao.,Gong, Wei-Chang.,Ge, Jia.,Niu, Yang.,Zhang, Xin.,...&email@example.com.(2015).Comparison of floral properties and breeding system in dimorphic Buddleja delavayi (Scrophulariaceae).JOURNAL OF SYSTEMATICS AND EVOLUTION,53(2),196-202.
Chen, Gao,et al."Comparison of floral properties and breeding system in dimorphic Buddleja delavayi (Scrophulariaceae)".JOURNAL OF SYSTEMATICS AND EVOLUTION 53.2(2015):196-202.