植物分类与资源学报 2015, 37(01) 21-28 DOI:    10.7677/ynzwyj201514068  ISSN: 2095-0845 CN: 53-1217/Q

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Article by Ma, Y. P. 1
Article by Wu, Z. K. 1
Article by Zhang, C. Q. 1、2
Article by Sun, W. B. 1
 马永鹏1, 吴之坤1, 张长芹1、2, 孙卫邦1
1 中国科学院昆明植物研究所植物园,昆明650201; 2 云南特色木本花卉工程技术中心,昆明650000

蓝果杜鹃 (Rhododendron cyanocarpum) 为大理苍山特有的濒危植物,有粉色和白色两种花冠类型。为了探讨该物种花色多态性的意义,本研究调查了粉色花和白色花植株在已知的各居群的分布频率、花冠的反射光谱及其它的花部特征、有效传粉者及其访花频率与结实情况。结果表明:粉色花植株在所有调查的居群中占优势 (77%~100%)。粉色花的花冠反射光谱在430nm和650nm有两个峰,而白色花只在430nm有一个反射峰。同时,花特征如:花柱与柱头颜色、花冠长度、花萼长度、花梗长度以及雌雄蕊最短距离,两种花冠存在显著差异。另外,尽管熊蜂作为这两种花冠的主要传粉者,但粉红花的访花频率以及自然条件下的结实情况显著高于白色花。本研究结果推测粉红色花可能受到了稳定性选择的作用。

关键词 蓝果杜鹃   熊蜂   花色多态性   访花频率  
Flower Color Polymorphism in Rhododendron cyanocarpum (Ericaceae), an Endangered Alpine Species Endemic to NW Yunnan, China
 MA  Yong-Peng-1, WU  Zhi-Kun-1, ZHANG  Chang-Qin-1、2, SUN  Wei-Bang-1
1 Kunming Botanical Garden, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China;
2 Yunnan Characteristics of Wood Flowers Engineering and Technical Research Center, Kunming 650000, China

 Rhododendron cyanocarpum is a narrow endemic species with pink and white floral color. In the present study, to investigate the significance of petal color morphs, we examined color morph frequencies, petal color reflectance and other associated floral characters, effective pollinators, visitation frequencies, and fruit production in the field. In all surveyed known populations, plants with pink color morph dominanted and comprised 77%-100% of individuals. Two peaks at 430 nm and 650 nm were found in the petal color reflectance of pink flowers, and only one peak at 430 nm was found in the reflectance spectrum of white flowers. In addition, color morphs were also associated with colors of style and stigma, lengths of corolla, calyx and pedicel, the closest distance between stigma and stamen, but not with style length and nectar production. Moreover, higher visitation frequency of their shared pollinators (bumblebees) and fruit production were observed of pink flowers than white flowers. Despite a briefly temporal and spacial study, we suggest that color morph frequencies, visit frequencies of bumblebees and fruit production, all favor to be stablilizing selection for the pink color morph.

Keywords: Rhododendron cyanocarpum   Bumblebees   Floral color morphs   Visit frequency  
收稿日期 2014-04-28 修回日期  网络版发布日期 2014-07-10 
DOI: 10.7677/ynzwyj201514068

The National Natural Science Foundation of China (31200247, U1302262); The Natural Science Foundation of Yunnan Province (2012FB180)



Bradshaw HD, Schemske DW, 2003. Allele substitution at a flower colour locus produces a pollinator shift in monkey flowers[J]. Nature, 426: 176—178
Campbell DR, Waser NM, MelendezAckerman EJ, 1997. Analyzing pollinatormediated selection in a plant hybrid zone: hummingbird visitation patterns on three spatial scales[J]. American Naturalist, 149: 295—315
Chamberlain DF, 1982. A revision of Rhododendron II. Subgenus Hyemanthes[J]. Notes on Royal Botanic Garden Edinburg, 39: 209—486
Coberly LC, Rausher MD, 2008. Pleiotropic effects of an allele producing white flowers in Ipomoea purpurea[J]. Evolution, 62: 1076—1085
Emms SK, Arnold ML, 2000. Sitetosite differences in pollinator visitation patterns in a Louisiana iris hybrid zone[J]. Oikos, 91: 568—578
Epperson BK, Clegg MT, 1987. Instability at a ower color locus in the morning glory[J]. Journal of Heredity, 78: 346—352
Frey FM, 2007. Phenotypic integration and the potential for independent color evolution in a polymorphic spring ephemeral[J]. American Journal of Botany, 94: 437—444
Frey FM, Dunton J, Garland K, 2011. Floral color variation and associations with fitnessrelated traits in Malva moschata (Malvaceae) [J]. Plant Species Biology, 26: 235—243
Gigord LDB, Macnair MR, Smithson A, 2001. Negative frequencydependent selection maintains a dramatic flower color polymorphism in the rewardless orchid Dactylorhiza sambucina (L.) [J]. Proceedings of the National Academy of Sciences, USA, 8: 6253—6255
Hodges SA, Whittall JB, Fulton M et al., 2002. Genetics of floral traits influencing reproductive isolation between Aquilegia formosa and Aquilegia pubescens[J]. American Naturalist, 59: 51—60
Jones KN, 1996. Fertility selection on a discrete floral color polymorphism in Clarkia (Onagraceae) [J]. Evolution, 50: 71—79
Jones KN, Reithel JS, 2001. Pollinatormediated selection on a flower color polymorphism in experimental populations of Antirrhinum (Scrophulariaceae) [J]. American Journal of Botany, 88: 447—454
Ma YP, Zhang CQ, Zhang JL et al., 2010. Natural hybridization between Rhododendron delavayi and Rcyanocarpum (Ericaceae), from morphological, molecular and reproductive evidence[J]. Journal of Integrative Plant Biology, 52: 844—851
Ma YP, Wu ZK, Tian XL et al., 2012. Growth discrepancy between filament and style facilitates autonomous selffertilization in Hedychium yunnanense[J]. Plant Ecology and Evolution, 145: 185—189
Ma YP, Wu ZK, Dong K et al., 2014. Pollination biology of Rhododendron cyanocarpum (Ericaceae), an alpine species endemic to NW Yunnan, China[J]. Journal of Systematics and Evolution (accepted, DOI: JSE12114)
Matsumura S, Yokoyama J, Tateishi Y et al., 2006. Intraspecific variation of flower colour and its distribution within a sea lavender,  Limonium wrightii (Plumbaginaceae), in the northwestern Pacific Islands[J]. Journal of Plant Research, 119: 625—632
Medel R, BottoMahan C, KalinArroyo M, 2003. Pollinatormediated selection on the nectar guide phenotype in the Andean monkey flower, Mimulus luteus[J]. Ecology, 84: 1721—1732
MelendezAckerman E, Campbell DR, 1998. Adaptive significance of flower color and intertrait correlations in an Ipomopsis hybrid zone[J]. Evolution, 52: 1293—1303
Miller RB, 1981. Hawkmoths and the geographic patterns of floral variation in Aquilegia caerulea[J]. Evolution, 35: 763—774
Mitchell RJ, 2004. Heritability of nectar traits: why do we know so little[J]? Ecology, 85: 1527—1533
Ng SC, Corlett RT, 2000. Comparative reproductive biology of six species of Rhododendron (Ericaceae) in Hong Kong, South China[J]. Canadian Journal of Botany, 78: 221—229
Pellegrino G, Caimi D, Noce ME et al., 2005. Effects of local density and flower colour polymorphism on pollination and reproduction in the rewardless orchid Dactylorhiza sambucina (L.) Soo[J]. Plant Systematics and Evolution, 251: 119—129
Real LA, 1990. Predator switching and the interpretation of animal choice behavior: the case for constrained optimization[A]. // Hughes RN eds., Behavioural Mechanisms of Food Selection[M]. SpringerVerlag, Heidelberg, 1—21
Rausher MD, 2008. Evolutionary transitions in floral color[J]. International Journal of Plant Sciences, 169: 7—21
Shrestha M, Dyer AG, BoydGerny S et al., 2013. Shades of red: birdpollinated flowers target the specific colour discrimination abilities of avian vision[J]. New Phytologist, 198: 301—310
Smithson A, Macnair MR, 1996. Frequencydependent selection by pollinators: mechanisms and consequences with regard to behaviour of bumblebees Bombus terrestris (L) (Hymenoptera: Apidae) [J]. Journal of Evolutionary Biology, 9: 571—588
Smithson A, Macnair MR, 1997. Negative frequencydependent selection by pollinators on artificial flowers without rewards[J]. Evolution, 51: 715—723
Stanton ML, Snow AA, Handel SN et al., 1989. The impact of a flower color polymorphism on mating patterns in experimental populations of wild radish (Raphanus raphanistrum L.) [J]. Evolution, 43: 335—346
Stebbins GL, 1974. Flowering Plants: Evolution Above the Species Level[M]. Belknap Press, Cambridge, MA: Belknap Press Harvard
Streisfeld MA, Kohn JR, 2005. Contrasting patterns of floral and molecular variation across a cline in Mimulus aurantiacus[J]. Evolution, 59: 2548—2559
Subramaniam B, Rausher MD, 2000. Balancing selection on a floral polymorphism[J]. Evolution, 54: 691—695
Sun SG, Liao K, Xia J et al., 2005. Floral colour change in Pedicularis monbeigiana (Orobanchaceae) [J]. Plant Systematics and Evolution, 255: 77—85
Tremblay RL, Ackerman JD, 2003. The genetic structure of orchid populations and its evolutionary importance[J]. Lankesteriana, 7: 87—92
Tremblay RL, Ackerman JD, 2007. Floral color patterns in a tropical orchid: are they associated with reproductive success?[J]. Plant Species Biology, 22: 95—105
Wang S, Xie Y, 2004. China Species Red List 1[M]. Beijing: Higher Education Press
Waser NM, Price MV, 1981. Pollinator choice and stabilizing selection for ower color in Delphinium nelsonii[J]. Evolution, 35: 376—390
Wesselingh RA, Arnold ML, 2000. Pollinator behaviour and the evolution of Louisiana iris hybrid zones[J]. Journal of Evolutionary Biology, 13: 171—180
Wilson P, Thomson JD, 1996. How do owers diverge?[A]. // Lloyd D, Barrett SCH eds., Floral Biology[M]. New York: Chapman & Hall, 88—111
Wu CY, 1986. Flora of Yunanica[M]. Tomus 4. Beijing: Science Press

1. 汤晓辛1、2, 黄双全1.花色多样性与变异的研究进展[J]. 植物分类与资源学报, 2012,34(3): 239-247


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