Breeding system and pollination of two closely related bamboo species
Chen, Ling-Na1; Cui, Yong-Zhong1; Wong, Khoon-Meng2; Li, De-Zhu3; Yang, Han-Qi1
2017
发表期刊AOB PLANTS
ISSN2041-2851
卷号9页码:plx021
摘要An understanding of the breeding systems and pollination of agriculturally important plants is critical to germplasm improvement. Breeding system characteristics greatly influence the amount and spatial distribution of genetic variation within and amongst populations and influence the rarity and extinction vulnerability of plant species. Many woody bamboos have a long vegetative period (20-150 years) followed by gregarious monocarpy. Relatively, little is known about their pollination and breeding systems. We studied these characteristics in wild Dendrocalamus membranaceus populations and cultivated Dendrocalamus sinicus populations distributed in the Yunnan Province of China. Floral morphology, flower visitors and breeding system were studied from 2013 to 2015. Both bamboos were protogynous, but flowering periods of florets overlapped providing opportunities for self-pollination amongst florets, especially in D. membranaceus. There was no agamospermy in either species. Seed set of D. sinicus was low (0.42 +/- 0.42 %) under natural pollination but higher (8.89 +/- 2.55 %) after artificial xenogamy. Seed set of D. membranaceus was higher (7.49 +/- 0.82 %) in mass flowering populations and 2.14 +/- 0.25% in sporadically flowering populations. The Asian honeybee Apis cerana could provide cross-pollination of D. membranaceus and D. sinicus, and flower visitation peaked at 1000-1200 h. Pollination limitation due to lack of pollinators or pollen was detected in the cultivated populations of D. sinicus and sporadically flowering populations of D. membranaceus. Pollination limitation was not obvious within mass flowering populations. Hand pollination could significantly increase seed set of these two bamboo species. Dendrocalamus membranaceus and D. sinicus were self-compatible and have a mixed-mating system with outcrossing being pre-dominant. Their seed production was limited by the quantity of pollen and pollinator activity. Honeybees were observed as effective pollinators.
关键词Breeding System Dendrocalamus Membranaceus Dendrocalamus Sinicus Floral Morphology Pollination Limitation Pollinators Woody Bamboo
语种英语
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/54817
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位1.Chinese Acad Forestry, Res Inst Insect Resources, Kunming 650233, Yunnan, Peoples R China
2.Singapore Bot Gardens, 1 Cluny Rd, Singapore 259569, Singapore
3.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
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Chen, Ling-Na,Cui, Yong-Zhong,Wong, Khoon-Meng,et al. Breeding system and pollination of two closely related bamboo species[J]. AOB PLANTS,2017,9:plx021.
APA Chen, Ling-Na,Cui, Yong-Zhong,Wong, Khoon-Meng,Li, De-Zhu,&Yang, Han-Qi.(2017).Breeding system and pollination of two closely related bamboo species.AOB PLANTS,9,plx021.
MLA Chen, Ling-Na,et al."Breeding system and pollination of two closely related bamboo species".AOB PLANTS 9(2017):plx021.
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