Seed dormancy and germination of Michelia yunnanensis (Magnoliaceae)

doi:10.1016/j.scienta.2009.11.021

	Seed dormancy and germination of Michelia yunnanensis (Magnoliaceae)
	Han, Chun-Yan 1,2; Welbaum, Gregory 3; Long, Chun-Lin 1,4
通讯作者	long@mail.kib.ac.cn
	2010-02-26
发表期刊	SCIENTIA HORTICULTURAE
ISSN	0304-4238
卷号	124 期号:1 页码:83-87
摘要	Michelia yunnanensis Franch. is a Chinese endemic ornamental shrub with potential for greater utilization as a landscape and medicinal plant if propagation was less difficult. Seed development and breaking of seed dormancy were investigated to improve propagation of M. yunnanensis. No fresh seeds germinated when tested at the time of dispersal. Newly matured seeds of M. yunnanensis contained differentiated linear underdeveloped embryos that were physiologically dormant. The embryo/seed length ratio of M. yunnanensis was 0.15. Warm stratification did not break seed dormancy. Dormancy was broken by cold stratification at 4 degrees C but not by flowing water or nitrate. Embryos developed grew inside seeds during cold stratification at 4 degrees C. In newly harvested dormant seeds, embryos were 0.94 tool long and increased in length 139% before radicle emergence (germination). GA(3) Substituted for cold stratification to break dormancy in seeds of M. yunnanensis incubated at 25 degrees C or 20/25 degrees C. Mature M. yunnanensis seeds exhibited intermediate complex morphophysiological dormancy. Optimal germination of non-dormant seed ill terms of both germination percentage and rate occurred at 20/25 degrees C. (C) 2009 Elsevier B.V. All rights reserved.
关键词	Embryo Development Ga(3) Cold Stratification Morphophysiological Dormancy
学科领域	Horticulture
DOI	10.1016/j.scienta.2009.11.021
收录类别	SCI
语种	英语
WOS记录号	WOS:000275249500015
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/14091
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 3.Virginia Polytech Inst & State Univ, Dept Hort, Blacksburg, VA 24061 USA 4.Minzu Univ China, Coll Life & Environm Sci, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Han, Chun-Yan,Welbaum, Gregory,Long, Chun-Lin. Seed dormancy and germination of Michelia yunnanensis (Magnoliaceae)[J]. SCIENTIA HORTICULTURAE,2010,124(1):83-87.
APA	Han, Chun-Yan,Welbaum, Gregory,&Long, Chun-Lin.(2010).Seed dormancy and germination of Michelia yunnanensis (Magnoliaceae).SCIENTIA HORTICULTURAE,124(1),83-87.
MLA	Han, Chun-Yan,et al."Seed dormancy and germination of Michelia yunnanensis (Magnoliaceae)".SCIENTIA HORTICULTURAE 124.1(2010):83-87.

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