气候变化领域集成服务门户(CCPortal): Overlapping flowering periods among Shorea species and high growth performance of hybrid seedlings promote hybridization and introgression in a tropical rainforest of Singapore

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DOI	10.1016/j.foreco.2018.12.038
	Overlapping flowering periods among Shorea species and high growth performance of hybrid seedlings promote hybridization and introgression in a tropical rainforest of Singapore
	Kenzo T.; Kamiya K.; Ngo K.M.; Faizu N.; Lum S.K.Y.; Igarashi S.; Norichika Y.; Ichie T.
发表日期	2019
ISSN	0378-1127
起始页码	38
结束页码	44
卷号	435
英文摘要	A considerable extent of interspecific hybridization among dominant canopy dipterocarp species was recently found in a tropical rain forest fragment in Singapore. However, information about the fertility of the hybrids and the growth of their successive hybrids remains limited. We studied the flowering phenology of four dipterocarp species in the genus Shorea (S. curtisii, S. leprosula, S. parvifolia, and S. macroptera) and two hybrids (S. curtisii × S. leprosula and S. leprosula × S. parvifolia) and studied the performances of seedlings reproduced from them. We observed that S. macroptera bloomed first, without overlap with congeneric species, followed by the other Shorea species and the two first filial (F 1 ) hybrids. S. curtisii and S. leprosula, the species forming hybrids are most likely to succeed in this forest, completely overlapped with their hybrids. Fruits collected from the hybrids were viable, and these hybrid seedlings showed greater survival and a higher growth rate than those from pure species under greenhouse conditions. They included various cross types such as a backcross with each parent species. These results may imply that successive hybrids and introgression spontaneously occur among Shorea species. It may be important to consider the risk of hybridization for the management of tropical forests, particularly in degraded tropical rainforests where mechanisms of ecological isolation between closely related species might be altered. © 2018 Elsevier B.V.
英文关键词	Backcross; Dipterocarp; Forest degradation; General flowering; Heterosis
语种	英语
scopus关键词	Plants (botany); Tropics; Backcross; Dipterocarps; Forest degradation; General flowering; Heterosis; Forestry; environmental degradation; fertility; flowering; forest; growth; heterosis; hybrid; hybridization; introgression; performance assessment; phenology; rainforest; seedling; tropical environment; tropical forest; Forestry; Growth Rate; Heterosis; Hybridization; Hybrids; Seedlings; Shorea; Tropics; Singapore [Southeast Asia]; Shorea; Shorea curtisii; Shorea leprosula; Shorea macroptera; Shorea parvifolia
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156200
作者单位	Forestry and Forest Products Research Institute, Tsukuba, 305-8687, Japan; Center for Tropical Forest Science – Arnold Arboretum Asia Program, 1 Nanyang Walk, Singapore, 637616, Singapore; Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan; Asian School of the Environment, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; The United Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan; Faculty of Agriculture, Kochi University, Nankoku, 783-8502, Japan
推荐引用方式 GB/T 7714	Kenzo T.,Kamiya K.,Ngo K.M.,et al. Overlapping flowering periods among Shorea species and high growth performance of hybrid seedlings promote hybridization and introgression in a tropical rainforest of Singapore[J],2019,435.
APA	Kenzo T..,Kamiya K..,Ngo K.M..,Faizu N..,Lum S.K.Y..,...&Ichie T..(2019).Overlapping flowering periods among Shorea species and high growth performance of hybrid seedlings promote hybridization and introgression in a tropical rainforest of Singapore.Forest Ecology and Management,435.
MLA	Kenzo T.,et al."Overlapping flowering periods among Shorea species and high growth performance of hybrid seedlings promote hybridization and introgression in a tropical rainforest of Singapore".Forest Ecology and Management 435(2019).