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Physiological dormancy in seeds of two endemic species of Begonia from Yunnan Province, China: diagnosis and classification
Hu, Xiao-Jian1,2; Yang, Li-Hua1,2; Guan, Kai-Yun1
Corresponding AuthorGuan, 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
Source PublicationPLANT SPECIES BIOLOGY
ISSN0913-557X
Volume27Issue:3Pages:201-209
AbstractWith 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.
KeywordBegonia Embryo Germination Physiological Dormancy Seed
DOI10.1111/j.1442-1984.2011.00344.x
Indexed BySCI
Language英语
WOS Research AreaPlant Sciences ; Environmental Sciences & Ecology
WOS SubjectPlant Sciences ; Ecology
WOS IDWOS:000308090400003
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/15672
Collection资源植物与生物技术所级重点实验室
Affiliation1.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
Recommended Citation
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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