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题名: Seed Germination of Huagaimu, a Critically Endangered Plant Endemic to Southeastern Yunnan, China
作者: Zheng, Yan-Ling1, 2; null(孙卫邦)1
刊名: HORTTECHNOLOGY
关键词: GA ; Magnoliaceae ; Manglietiastrum sinicum ; moist chilling ; propagation ; seed dormancy
英文摘要: As a critically endangered tree in the Magnoliaceae family, huagaimu (Manglietiastrum sinicum) is represented by only 10 mature individuals in evergreen broadleaved montane forests of southeastern Yunnan Province, China. Our previous work revealed the existence of a seed dormancy period for this species. The current study was performed to evaluate the effects of plant growth regulators (PGRs) and moist chilling on breaking seed dormancy in this species. Germination of seeds pretreated for 24 h with gibberellic acid (GA(3)), alpha-naphthaleneacetic acid, 6-benzyladenine, and 2,4-dichlorophenoxyacetic acid indicated that only GA(3), at concentrations of 300 and 500 mg.L(-1), can significantly break the seed dormancy of huagaimu after 50 days of incubation, with about 66% germination under 500 mg.L(-1) GA(3). Moist chilling at 4 degrees C for 3 weeks can also effectively break the seed dormancy of the species, with 56% of seeds treated in this way germinating after 30 days of incubation. The combined treatments of PGRs followed by moist chilling were also conducted. Based on germination results after 30 days of incubation, the seed germination of combined treatments was significantly higher than that of PGR treatments. However, the seeds treated only with moist chilling presented the highest germination percentage among all the treatments.
出版日期: 2009-04-01
卷号: 19, 期号:2, 页码:427-431
语种: 英语
ISSN号: 1063-0198
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/14079
Appears in Collections:资源植物与生物技术所级重点实验室_期刊论文

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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

Recommended Citation:
Zheng, YL; Sun, WB.Seed Germination of Huagaimu, a Critically Endangered Plant Endemic to Southeastern Yunnan, China,HORTTECHNOLOGY,2009,19(2):427-431
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