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
2012-09-01
发表期刊PLANT SPECIES BIOLOGY
ISSN0913-557X
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
资助信息National Natural Science Foundation of China [30870243]; Chinese Academy of Sciences [KSCX2-YW-Z-032]
DOI10.1111/j.1442-1984.2011.00344.x
收录类别SCI
语种英语
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology
WOS类目Plant Sciences ; Ecology
WOS记录号WOS:000308090400003
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
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
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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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