Physiological dormancy in seeds of two endemic species of Begonia from Yunnan Province, China: diagnosis and classification

doi:10.1111/j.1442-1984.2011.00344.x

	Physiological dormancy in seeds of two endemic species of Begonia from Yunnan Province, China: diagnosis and classification
	Hu, Xiao-Jian 1,2; Yang, Li-Hua 1,2; Guan, Kai-Yun 1
通讯作者	Guan, KY (reprint author), Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Kunming 650204, Yunnan, Peoples R China.,guanky@mail.kib.ac.cn
	2012-09-01
发表期刊	PLANT SPECIES BIOLOGY
ISSN	0913-557X
卷号	27 期号:3 页码:201-209
摘要	With the purpose of assessing the status of dormancy in seeds of two Begonia species (Begonia lithophila and Begonia guishanensis), freshly matured seeds were given gibberellic acid and moist chilling and allowed to dry after ripening. The seeds were then germinated on media with or without KNO3 at 15, 20, 25, 30 and 18/25 degrees C. All three treatments significantly increased germination percentages. Examination by X-ray revealed that seeds of both species have a fully developed embryo and thus have no morphological component of dormancy; seeds readily imbibed water and KNO3 solution. Therefore, we conclude that seeds of the two Begonia species have non-deep physiological dormancy. Although KNO3 significantly increased germination in both species, alternating temperatures did not, suggesting that the most favorable microhabitat for germination is small-scale disturbances under the forest canopy.
关键词	Begonia Embryo Germination Physiological Dormancy Seed
DOI	10.1111/j.1442-1984.2011.00344.x
收录类别	SCI
语种	英语
WOS记录号	WOS:000308090400003
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/15672
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, Key Lab Econ Plants & Biotechnol, Kunming 650204, Yunnan, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Hu, Xiao-Jian,Yang, Li-Hua,Guan, Kai-Yun. Physiological dormancy in seeds of two endemic species of Begonia from Yunnan Province, China: diagnosis and classification[J]. PLANT SPECIES BIOLOGY,2012,27(3):201-209.
APA	Hu, Xiao-Jian,Yang, Li-Hua,&Guan, Kai-Yun.(2012).Physiological dormancy in seeds of two endemic species of Begonia from Yunnan Province, China: diagnosis and classification.PLANT SPECIES BIOLOGY,27(3),201-209.
MLA	Hu, Xiao-Jian,et al."Physiological dormancy in seeds of two endemic species of Begonia from Yunnan Province, China: diagnosis and classification".PLANT SPECIES BIOLOGY 27.3(2012):201-209.

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