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Post desiccation germination of mature seeds of tea (Camellia sinensis L.) can be enhanced by pro-oxidant treatment, but partial desiccation tolerance does not ensure survival at -20 degrees C

文献类型：期刊论文

作者Chen, Hongying1,2,3; Pritchard, Hugh W.1,2; Seal, Charlotte E.1; Nadarajan, Jayanthi1; Li, Weiqi2; Yang, Shixiong2; Kranner, Ilse1
刊名PLANT SCIENCE
出版日期2012-03-01
卷号184页码:36-44
关键词Camellia sinensis Desiccation tolerance Hydrogen peroxide Seed storage behaviour
ISSN号0168-9452
通讯作者Kranner, I (reprint author), Royal Bot Gardens, Seed Conservat Dept, Wakehurst Pl, Haywards Heath RH17 6TN, W Sussex, England, i.kranner@kew.org
英文摘要The maximal potential desiccation tolerance (MPDT) of tea (Camellia sinensis) seeds has been a matter of debate for decades. Here we assessed the ability of tea seeds from three sites in China to germinate after desiccation. Desiccation tolerance was greatest in Kunming, followed by Puer and Lincang, with Kunming seeds tolerating drying to 8% moisture content (MC), or similar to 0.5 water activity (a(w)). Such tolerance was observed in Lincang seeds only when hydrogen peroxide (H2O2) at 0.5 or 1 M was applied to seeds, indicating a stimulatory role for H2O2 in post-desiccation germination. Puer seeds exhibited MPDT of 16% MC (similar to 0.7 a(w)). Therefore, seeds from all three sites were not recalcitrant. The length of the dry season after dispersal and the high ratio of seed coat to seed mass (>0.3) support the observation of non-recalcitrant behaviour. The seeds were not immature, as the lipid signal in embryonic axes mirrored that of the cotyledons (30% oil). Even after high survival [>60% total germination (TG)] on drying to 10-13% MC, no Kunming seeds tolerated 1 month storage at -20 degrees C coinciding with lipid transitional changes at this temperature. The results indicate that tea seeds from China are neither recalcitrant nor storable at -20 degrees C. (C) 2011 Elsevier Ireland Ltd. All rights reserved.
学科主题Biochemistry & Molecular Biology; Plant Sciences
类目[WOS]Biochemistry & Molecular Biology ; Plant Sciences
研究领域[WOS]Biochemistry & Molecular Biology ; Plant Sciences
关键词[WOS]SUPERCRITICAL-FLUID EXTRACTION ; STORAGE PHYSIOLOGY ; CRYOPRESERVATION ; SENSITIVITY ; WATER ; TEMPERATURE ; CITRUS ; COFFEE ; TRIACYLGLYCEROLS ; BEHAVIOR
收录类别SCI
资助信息CAS[2010T2S04]; Millennium Seed Bank Project; Millennium Commission; Wellcome Trust; Orange Plc.; Defra
语种英语
WOS记录号WOS:000301218400005
公开日期2012-06-07
源URL[http://ir.kib.ac.cn/handle/151853/10525]  
专题昆明植物研究所_中国西南野生生物种质资源库
作者单位1.Royal Bot Gardens, Seed Conservat Dept, Haywards Heath RH17 6TN, W Sussex, England
2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming 650201, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Hongying,Pritchard, Hugh W.,Seal, Charlotte E.,et al. Post desiccation germination of mature seeds of tea (Camellia sinensis L.) can be enhanced by pro-oxidant treatment, but partial desiccation tolerance does not ensure survival at -20 degrees C[J]. PLANT SCIENCE,2012,184:36-44.
APA Chen, Hongying.,Pritchard, Hugh W..,Seal, Charlotte E..,Nadarajan, Jayanthi.,Li, Weiqi.,...&Kranner, Ilse.(2012).Post desiccation germination of mature seeds of tea (Camellia sinensis L.) can be enhanced by pro-oxidant treatment, but partial desiccation tolerance does not ensure survival at -20 degrees C.PLANT SCIENCE,184,36-44.
MLA Chen, Hongying,et al."Post desiccation germination of mature seeds of tea (Camellia sinensis L.) can be enhanced by pro-oxidant treatment, but partial desiccation tolerance does not ensure survival at -20 degrees C".PLANT SCIENCE 184(2012):36-44.

入库方式： OAI收割

来源：昆明植物研究所

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