Seed Germination of Huagaimu, a Critically Endangered Plant Endemic to Southeastern Yunnan, China

	Seed Germination of Huagaimu, a Critically Endangered Plant Endemic to Southeastern Yunnan, China
	Zheng, Yan-Ling 1,2; Sun, Wei-Bang1
通讯作者	wbsun@mail.kib.ac.cn
	2009-04-01
发表期刊	HORTTECHNOLOGY
ISSN	1063-0198
卷号	19 期号:2 页码:427-431
摘要	As a critically endangered tree in the Magnoliaceae family, huagaimu (Manglietiastrum sinicum) is represented by only 10 mature individuals in evergreen broadleaved montane forests of southeastern Yunnan Province, China. Our previous work revealed the existence of a seed dormancy period for this species. The current study was performed to evaluate the effects of plant growth regulators (PGRs) and moist chilling on breaking seed dormancy in this species. Germination of seeds pretreated for 24 h with gibberellic acid (GA(3)), alpha-naphthaleneacetic acid, 6-benzyladenine, and 2,4-dichlorophenoxyacetic acid indicated that only GA(3), at concentrations of 300 and 500 mg.L(-1), can significantly break the seed dormancy of huagaimu after 50 days of incubation, with about 66% germination under 500 mg.L(-1) GA(3). Moist chilling at 4 degrees C for 3 weeks can also effectively break the seed dormancy of the species, with 56% of seeds treated in this way germinating after 30 days of incubation. The combined treatments of PGRs followed by moist chilling were also conducted. Based on germination results after 30 days of incubation, the seed germination of combined treatments was significantly higher than that of PGR treatments. However, the seeds treated only with moist chilling presented the highest germination percentage among all the treatments.
关键词	Ga Magnoliaceae Manglietiastrum Sinicum Moist Chilling Propagation Seed Dormancy
学科领域	Horticulture
收录类别	SCI
语种	英语
WOS记录号	WOS:000279016500027
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/14079
专题	资源植物与生物技术所级重点实验室
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Yan-Ling,Sun, Wei-Bang. Seed Germination of Huagaimu, a Critically Endangered Plant Endemic to Southeastern Yunnan, China[J]. HORTTECHNOLOGY,2009,19(2):427-431.
APA	Zheng, Yan-Ling,&Sun, Wei-Bang.(2009).Seed Germination of Huagaimu, a Critically Endangered Plant Endemic to Southeastern Yunnan, China.HORTTECHNOLOGY,19(2),427-431.
MLA	Zheng, Yan-Ling,et al."Seed Germination of Huagaimu, a Critically Endangered Plant Endemic to Southeastern Yunnan, China".HORTTECHNOLOGY 19.2(2009):427-431.

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