Seed dormancy and germination of Michelia yunnanensis (Magnoliaceae)

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 资源植物与生物技术所级重点实验室

	Seed dormancy and germination of Michelia yunnanensis (Magnoliaceae)
	Han, Chun-Yan 1,2; Welbaum, Gregory 3; Long, Chun-Lin 1,4
刊名	SCIENTIA HORTICULTURAE
	2010-02-26
卷号	124 期号:1 页码:83-87
关键词	Embryo development GA(3) Cold stratification Morphophysiological dormancy
ISSN号	0304-4238
通讯作者	long@mail.kib.ac.cn
英文摘要	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.
学科主题	Horticulture
类目[WOS]	Horticulture
研究领域[WOS]	Agriculture
关键词[WOS]	CLASSIFICATION-SYSTEM ; PROTEIN
收录类别	SCI
资助信息	This study was supported by the Ministry of Science and Technology of China (2008FY110400-2-2 and 2005DKA21006), the Chinese Ministry of Education (projects B08044 and MUC 985-3-3), and the Knowledge Innovation Program of the Chinese Academy of Sciences. The authors thank Dr. An-Jun Tang, Prof. Zhi-Ying Cheng and Mrs. Ji-Feng Luo for helpful research suggestions.
语种	英语
WOS记录号	WOS:000275249500015
公开日期	2012-07-18
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn/handle/151853/14091]
专题	昆明植物研究所_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.