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茶(Camellia sinensis L.)对铜的吸收与累积 被引量:6
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作者 李海生 张志权 席嘉宾 《植物资源与环境学报》 CAS CSCD 2003年第3期36-39,共4页
对广东省5个大型茶场中不同土壤背景值的8个茶园进行了土壤及茶(CamelliasinensisL.)树各部位的铜含量分析调查。地处我国南方的广东省茶园,土壤中铜含量在2.39~53.05mg kg之间。有效态铜含量相对较低,仅在0.45~3.17mg kg之间。茶树... 对广东省5个大型茶场中不同土壤背景值的8个茶园进行了土壤及茶(CamelliasinensisL.)树各部位的铜含量分析调查。地处我国南方的广东省茶园,土壤中铜含量在2.39~53.05mg kg之间。有效态铜含量相对较低,仅在0.45~3.17mg kg之间。茶树中各部位铜含量大小依次为枝条>幼叶>根>成熟叶。茶树枝条和幼叶铜含量较高,平均分别达14.5和14.3mg kg,远高于成熟叶铜含量水平(9.7mg kg)。而同时期相应茶场的茶叶制成品铜含量则较幼叶(一芽两叶)铜的含量高。土壤中的总钾、有效磷和总铜等都对茶树各部位铜的累积产生较大影响,但只有土壤有效磷含量对铜在茶树体内向枝条部分的转移和累积影响达显著程度,枝条铜含量与土壤有效磷之间的相关系数r=-0.74,呈显著负相关(P<0.05)。 展开更多
关键词 吸收 累积 土壤 含量测定
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茶Camellia sinensis L.对铝的吸收与累积研究 被引量:15
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作者 李海生 张志权 《中山大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第1期72-75,共4页
对广东省几个大型茶场中不同土壤背景值的 8个茶园 ,进行了土壤及茶树各部位的铝含量调查研究。地处我国南方的广东省茶园 ,其土壤中铝的含量都较高 ,全量在 6 0 0 0 0~ 15 0 0 0 0mg·kg- 1 之间 ,但有效态铝含量相对较低 ,仅为 3... 对广东省几个大型茶场中不同土壤背景值的 8个茶园 ,进行了土壤及茶树各部位的铝含量调查研究。地处我国南方的广东省茶园 ,其土壤中铝的含量都较高 ,全量在 6 0 0 0 0~ 15 0 0 0 0mg·kg- 1 之间 ,但有效态铝含量相对较低 ,仅为 30~ 40 0mg·kg- 1 之间 ,而且与土壤中全铝量大小无关 ,而与土壤酸碱度 (pH)呈极显著的负相关 ,相关系数r=- 0 9732。铝在茶树各部位含量大小依次为落叶 >成熟叶 >根 >枝条 >幼叶。茶树凋落叶铝含量最高 ,平均达 (112 71± 332 )mg·kg- 1 ,而用于加工成饮用茶的幼叶 (一芽两叶 )部分最低 ,平均只有 (6 39±2 32 )mg·kg- 1 ,同时期的相应茶场的茶叶制成品中 ,铝的含量亦接近这一水平 ,为 (978± 2 32 )mg·kg- 1 。土壤中的有机质、酸碱度 (pH)、总钾和有效钾、全铝和有效铝都对茶树各部位铝的累积产生较大影响 ,但只有土壤pH值对铝在茶树体内向幼叶部分的转移和累积影响达显著程度 ,幼叶铝含量与土壤pH之间的相关系数r =0 772 ,呈显著正相关 (P <0 0 5 )。 展开更多
关键词 铝累积 土壤酸碱度 土壤有机质 累积部位 富铝植物
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In vitro anti-hyaluronidase activity of Sri Lankan low grown orthodox orange pekoe grade black tea(Camellia sinensis L.) 被引量:2
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作者 Wanigasekera Daya Ratnasooriya Walimuni Prabhashini Kaushalya Mendis Abeysekera Chatura Tissa Dayendra Ratnasooriya 《Asian Pacific Journal of Tropical Biomedicine》 SCIE CAS 2014年第12期959-963,共5页
Objective:To access the anti-hyaluronidase activity of Sri Lankan low grown orthodox orange pekoe(OP) grade black tea with a view to develop an anti-aging skin formulation.Methods:Five concentrations(0.125,0.250,0.... Objective:To access the anti-hyaluronidase activity of Sri Lankan low grown orthodox orange pekoe(OP) grade black tea with a view to develop an anti-aging skin formulation.Methods:Five concentrations(0.125,0.250,0.500,1.000 and 2.000 mg/mL) of black tea brew(BTB) were made using a freeze dried sample of Sri Lankan low grown orthodox OP grade black tea which was prepared according to international organization for standardization specification.Epigallocatechin gallate(EGCG) was used as the reference agent(concentrations tested:0.012,0.025,0.050,0.100 and 0.200 mg/mL).Anti-hyaluronidase activity of BTB and EGCG in vitro were ascertained spectrometrically using hyaluronic acid(from rooster comb)and bovine testicular hyaluronidase.Results:The results revealed that BTB had moderate[IC50=(1.09±0.12) mg/mL]and dose dependent(r2=0.94) anti-hyaluronidase activity.EGCG also exhibited dose dependent(r2=0.93,P【0.05) anti-hyaluronidase activity which was superior[IC50=(0.09±0.00) mg/mL]to BTB.Conclusions:Sri Lankan low grown orthodox OP gradc black tca has promising antihyaluronidase activity in vitro and has the potential to be used as an anti-aging cosmaceutical.In addition,it may prove useful as a beverage in the management of allergy,some joint diseases and cnvenomation. 展开更多
关键词 camellia sinensis Orange pekoe Black tea Sri lankan tea Anti-aging Anti-hyaluronidase Hyaluronic acid
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Induced Polyploidy as a Tool for Increasing Tea(Camellia sinensis L.) Production 被引量:1
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作者 Hasnain Alam Muhammad Razaq Salahuddin 《Journal of Northeast Agricultural University(English Edition)》 CAS 2015年第3期43-47,共5页
Tea (Camellia sinensis L.) represents different ploidy levels. In the present paper, we reviewed the recent data on the diploid, aneuploid and polyploid formed their origin and chemically induced polyploidy and pred... Tea (Camellia sinensis L.) represents different ploidy levels. In the present paper, we reviewed the recent data on the diploid, aneuploid and polyploid formed their origin and chemically induced polyploidy and predicted it role in teagenetic improvement for better yield. Different polidy levels had different effects on tea physiology. Tetraploid and triploid had more vigour and hardness due to increased size of cells, while triploid could have even more vigours due to increased size of cells and sterilities. Chemically induced polyploidy had been found an important tool for improving plant physiology and production, therefore, induced polyploids should be produced to overcome the problem of low yield and limited rainfall in tea growing areas. 展开更多
关键词 TEA camellia sinensis POlYPlOIDY
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Identification of the lysine and histidine transporter family in Camellia sinensis and the characterizations in nitrogen utilization 被引量:1
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作者 Wei Huang Danni Ma +9 位作者 Fawad Zaman Xulei Hao Li Xia E Zhang Pu Wang Mingle Wang Fei Guo Yu Wang Dejiang Ni Hua Zhao 《Horticultural Plant Journal》 SCIE CAS CSCD 2024年第1期273-287,共15页
In plants,the lysine and histidine transporter(LHT)family represent a class of proteins that mediate the uptake,translocation,and utilization of amino acids.The tea plant(Camellia sinensis)is a perennial evergreen wit... In plants,the lysine and histidine transporter(LHT)family represent a class of proteins that mediate the uptake,translocation,and utilization of amino acids.The tea plant(Camellia sinensis)is a perennial evergreen with a relatively high level of amino acids.However,systematic identification and molecular characterization of the LHT gene family has rarely been reported in tea plants.In this study,22 CsLHTs were identified from the‘Shuchazao’genome and classified into two groups.The modeled three-dimensional structure and the conserved domains presented a high similarity among the LHTs proteins.Moreover,it was predicted that a few genes were conserved through the analysis of the physiochemical characters,structures and cis-elements in promoters.The expression patterns in tea plants revealed that CsLHT7 was mainly expressed in the roots,and CsLHT4 and CsLHT11 exhibited relatively high expression in both the roots and leaves.Moreover,the expression of all three genes could be induced by organic nitrogen.Additionally,heterogeneous expression of CsLHT4,CsLHT7 and CsLHT11 in Arabidopsis thaliana decreased the aerial parts biomass compared with that in WT plants while significantly increased the rosette biomass only for CsLHT11transgenic plants versus WT plants.Overall,our results provide fundamental information about CsLHTs and potential genes in N utilization for further analysis in tea plants. 展开更多
关键词 camellia sinensis Nitrogen lysine and histidine transporter(lHT)family
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基于金观音(Camellia sinensis)单体型基因组CsUGT等位基因的鉴定及表达
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作者 雷小梅 张宇航 +2 位作者 谷梦雅 郑玉成 叶乃兴 《茶叶学报》 2024年第3期11-33,共23页
【目的】植物的尿苷二磷酸糖基转移酶(UGT)是催化次生代谢物糖基化的关键酶,UGT基因主要参与植物逆境胁迫的响应。对CsUGT等位基因进行鉴定与表达分析,为其在茶树抗性及乌龙茶加工中香气形成的作用提供理论参考。【方法】基于金观音(Cam... 【目的】植物的尿苷二磷酸糖基转移酶(UGT)是催化次生代谢物糖基化的关键酶,UGT基因主要参与植物逆境胁迫的响应。对CsUGT等位基因进行鉴定与表达分析,为其在茶树抗性及乌龙茶加工中香气形成的作用提供理论参考。【方法】基于金观音(Camellia sinensis‘Jinguanyin’)单体型基因组,利用生物信息学方法分析,并通过实时荧光定量PCR技术分析CsUGT基因在低温(4℃)、干旱(10%PEG-6000溶液)和激素(100μmol·L^(−1)MeJA溶液)处理下0、3、6、12和24 h的表达,以及CsUGT基因在金观音乌龙茶加工过程中鲜叶、萎凋、一摇、二摇、三摇和杀青前的表达。【结果】生物信息学分析结果表明,从金观音单体型基因组中鉴定出了142对等位基因,多数定位于叶绿体中,并基于进化树将这些基因分为5个亚家族。CsUGT等位基因的结构较保守,相同基因的亲本等位基因的结构相似。转录组数据分析表明,发现多数CsUGT等位基因具有组织表达特性。实时荧光定量PCR检测发现,在MeJA处理下,CsUGT002、CsUGT047和CsUGT091的表达量在6 h达到峰值;在低温和干旱处理下,部分CsUGT基因的表达量分别在3或24 h时达到峰值。此外,在金观音乌龙茶加工过程中,CsUGT115的表达量显著上调,部分CsUGT基因在三摇时的表达量达到峰值。【结论】CsUGT蛋白多数为酸性和亲水性蛋白,并定位于叶绿体中;CsUGT等位基因结构较保守具有组织表达特性,部分CsUGT基因参与调控茶树的逆境胁迫及乌龙茶加工工艺中摇青时的香气合成。 展开更多
关键词 茶树 金观音 尿苷二磷酸糖基转移酶 等位基因 逆境胁迫 香气 生物信息学
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Genetic analyses of ancient tea trees provide insights into the breeding history and dissemination of Chinese Assam tea(Camellia sinensis var.assamica)
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作者 Miao-Miao Li Muditha K.Meegahakumbura +5 位作者 Moses C.Wambulwa Kevin S.Burgess Michael Möller Zong-Fang Shen De-Zhu Li Lian-Ming Gao 《Plant Diversity》 SCIE CAS CSCD 2024年第2期229-237,共9页
Chinese Assam tea(Camellia sinensis var.assamica)is an important tea crop with a long history of cultivation in Yunnan,China.Despite its potential value as a genetic resource,its genetic diversity and domestication/br... Chinese Assam tea(Camellia sinensis var.assamica)is an important tea crop with a long history of cultivation in Yunnan,China.Despite its potential value as a genetic resource,its genetic diversity and domestication/breeding history remain unclear.To address this issue,we genotyped 469 ancient tea plant trees representing 26 C.sinensis var.assamica populations,plus two of its wild relatives(six and three populations of C.taliensis and C.crassicolumna,respectively)using 16 nuclear microsatellite loci.Results showed that Chinese Assam tea has a relatively high,but comparatively lower gene diversity(H_(S)=0.638)than the wild relative C.crassicolumna(H_S=0.658).Clustering in STRUCTURE indicated that Chinese Assam tea and its two wild relatives formed distinct genetic groups,with considerable interspecific introgression.The Chinese Assam tea accessions clustered into three gene pools,corresponding well with their geographic distribution.However,New Hybrids analysis indicated that 68.48%of ancient Chinese Assam tea plants from Xishuangbanna were genetic intermediates between the Puer and Lincang gene pools.In addition,10%of the ancient Chinese Assam tea individuals were found to be hybrids between Chinese Assam tea and C.taliensis.Our results suggest that Chinese Assam tea was domesticated separately in three gene pools(Puer,Lincang and Xishuangbanna)in the Mekong River valley and that the hybrids were subsequently selected during the domestication process.Although the domestication history of Chinese Assam tea in southwestern Yunnan remains complex,our results will help to identify valuable genetic resources that may be useful in future tea breeding programs. 展开更多
关键词 Tea plant Hybrid origin Genetic diversity Domestication history camellia sinensis var.assamica camellia taliensis
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Genome-Wide Identification of ABCC Gene Subfamily Members and Functional Analysis of CsABCC11 in Camellia sinensis
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作者 Mingyuan Luo Shiyu Tian +7 位作者 Xinzhuan Yao Yue Wan Zhouzhuoer Chen Zifan Yang Huagen Hao Fei Liu Hu Tang Litang Lu 《Phyton-International Journal of Experimental Botany》 SCIE 2024年第8期2019-2036,共18页
The ATP-binding cassette(ABC)transporter is a gene superfamily in plants.ATP-binding cassette subfamily C(ABCC)protein is a multidrug resistance-associated(MRP)transporter.They play various roles in plant growth,devel... The ATP-binding cassette(ABC)transporter is a gene superfamily in plants.ATP-binding cassette subfamily C(ABCC)protein is a multidrug resistance-associated(MRP)transporter.They play various roles in plant growth,development,and secondary metabolite transport.However,there are few studies on ABCC transporters in tea plants.In this study,genome-wide association study(GWAS)analysis of epigallocatechin gallate(EGCG)content in 108 strains of Kingbird revealed that CsABCCs may be involved in EGCG transport.We identified 25 CsABCC genes at the genomic level of the tea plant,their phylogenetic tree,gene structure,targeted miRNA and other bioinformatics were analyzed.The expression patterns of CsABCCs in eight different tissues and abiotic stress indicate that they have potential roles in regulating the growth,development,and defense of tea plants.The correlation analysis revealed that the expression of the CsABCC11 gene was closely related to the EGCG content in tea buds of 108 strains of the Kingbird,and the subcellular localization experiments in tobacco showed that CsABCC11 protein was localized on the plasma membrane.The virus-induced gene silencing(VIGS)strategy in tea plants further verified that CsABCC11 was involved in EGCG accumulation.Our study laid a foundation for studying the biological function of CsABCC and provided a new candidate molecular marker gene for further EGCG-related variety breeding,which will be of great interest to breeders. 展开更多
关键词 camellia sinensis ABCC gene subfamily EGCG VIGS guizhou local variety Kingbird
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Analysis of NPK in Camellia sinensis, Gliricidia sepium, and Musa acuminata Biomasses for Preparation of an Organic Fertilizers Formula for Young Tea Plants (Musa acuminata) and Studying of Their Nutrient Release Capacity in the Biodegradation Process
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作者 Madushan Dhammika Gunarathna Ashan Sithija Wickramaarachchi +2 位作者 Polegodage Dilushi Sureka Ruwan Kumari Hiti Mudiyanselage Sithara Dilrukshi Wijekoon Deeyagahage Sujeewa Mallik de Silva 《Journal of Agricultural Chemistry and Environment》 2024年第1期115-132,共18页
This study investigates the nitrogen (N), phosphorous (P), and potassium (K) contents in raw biomasses of Camellia sinensis, Gliricidia sepium, and Musa acuminata. Therein, the highest N and P content was seen in Came... This study investigates the nitrogen (N), phosphorous (P), and potassium (K) contents in raw biomasses of Camellia sinensis, Gliricidia sepium, and Musa acuminata. Therein, the highest N and P content was seen in Camellia sinensis 116.80 ± 0.08 mg and 66.00 ± 0.14 mg respectively. The highest K content (106.80 ± 0.04 mg) was observed in Musa acuminata. Next, all three types of plant materials were allowed to decompose in water for 3 weeks, and a sample from each was analyzed for NPK after the 1st, 2nd, and 3rd week during decomposition. A significant increase in the release of N, P, and K by the Camellia sinensis to water (P Musa acuminate were not significantly changed (P > 0.05) over time. The ratio for N:P:K was calculated for raw biomass samples and decomposed samples to find the best fitting N:P:K ratio to apply to young tea plants as organic fertilizers. In addition to that, the microbial insight of these organic compounds was analyzed by observing how microbial population increased with decomposition by the enumeration of the total microbial count. A considerable increment in total microbial count was observed up to 3.28 × 10<sup>6</sup>, 1.21 × 10<sup>10</sup>, 2.18 × 10<sup>8</sup>, and 6.49 × 10<sup>7</sup> CFU/ml for Camellia sinensis, Gliricidia sepium, Musa accuminata (leaves), and Musa accuminata (trunk) respectively. The presence of phosphate solubilizing bacteria (PSB) and nitrogen solubilizing bacteria (NSB) throughout the decomposition period was confirmed by their growth on NBRIP and a modified nutrient medium that was specifically designed for the identification of ammonifiers respectively. Prepared fertilizer samples were applied to young tea plants that were grown in the Mawanella area in Sri Lanka (7°15'12.42"N 80°26'47.62"E) and according to the results, it is clear that fertilizer mixture 1 (N:P:K, 10:5:10, tea dust + Gliricidia + banana trunk) and fertilizer mixture 2 (N:P:K, 10:5:10, tea dust + Gliricidia + banana leaves) has the potential to increase the growth of young tea plants. 展开更多
关键词 camellia sinensis Musa accuminata Gliricidia sepium Phosphate Solubilizing Bacteria Nitrogen Solubilizing Bacteria
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一种山茶刺盘孢Colletotrichum camelliae实时荧光定量PCR快速检测方法的建立
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作者 张晓阳 程淑媛 +11 位作者 蒋军喜 陈艳 黄纪刚 刘爽 刘克东 邱慧芳 江武 叶茵 袁倩 余玉华 单崇蕾 刘家鑫 《生物灾害科学》 2024年第1期134-141,共8页
【目的】建立一种快速检测茶树炭疽病病原菌山茶刺盘孢(Colletotrichumcamelliae)的实时荧光定量PCR检测方法。【方法】以茶树炭疽病病原菌山茶刺盘孢(C. camelliae)为检测目标,根据刺盘孢属ApMat基因片段设计特异性引物,建立q PCR检测... 【目的】建立一种快速检测茶树炭疽病病原菌山茶刺盘孢(Colletotrichumcamelliae)的实时荧光定量PCR检测方法。【方法】以茶树炭疽病病原菌山茶刺盘孢(C. camelliae)为检测目标,根据刺盘孢属ApMat基因片段设计特异性引物,建立q PCR检测技术体系,验证引物特异性,测试反应的灵敏度,绘制标准曲线,并采集田间病叶测试检测效果。【结果】设计的四组引物对中,引物对CcF/CcR特异性最好,扩增效率最高;用于定量检测C. camelliae的灵敏度为10 pg/μL,DNA浓度的对数(X)与Ct值(Y)之间的线性关系为Y=-3.529 6X+36.938(R^(2)=0.9957,E=92.01);该体系检测C.camelliae溶解曲线对应的特异峰值Tm为(85.5±0.5)℃;用该体系在人工接种C. camelliae的病斑组织和田间病叶中检测到了C. camelliae的存在。【结论】建立的q PCR反应体系可特异性定量检测C. camelliae,并可应用于田间病害的早期诊断。 展开更多
关键词 茶炭疽病 山茶刺盘孢 实时荧光定量PCR 快速检测
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Differential metabolites and their transcriptional regulation in seven major tea cultivars (Camellia sinensis) in China
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作者 GAO Ting HOU Bing-hao +5 位作者 SHAO Shu-xian XU Meng-ting ZHENG Yu-cheng JIN Shan WANG Peng-jie YE Nai-xing 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2023年第11期3346-3363,共18页
Various genetic and biochemical characteristics exist in tea plant cultivars,and they largely determine production suitability and tea quality.Here,we performed transcriptomic and metabolomic analyses of young shoots ... Various genetic and biochemical characteristics exist in tea plant cultivars,and they largely determine production suitability and tea quality.Here,we performed transcriptomic and metabolomic analyses of young shoots of seven tea cultivars and identified major regulatory transcription factors(TFs)for the characteristic metabolites in different cultivars based on weighted gene co-expression network analysis(WGCNA).Phenotypically,we found that‘Tieguanyin’(TGY)and‘Fujian Shuixian’(FJSX),which are suitable for oolong tea,had higher catechin contents.The metabolites of‘Jinxuan’(JX)were more prominent,especially the contents of phenolic acids,flavonoids,terpenes,and tannins,which were higher than those of the other six cultivars.Moreover,‘Fudingdabai’(FDDB),which is suitable for white tea,was rich in amino acids,linolenic acid,and saccharides.At the molecular level,hydroxycinnamoyl CoA quinate hydroxycinnamoyl transferase(HCT)(CsTGY12G0001876,and CsTGY06G0003042)led to the accumulation of chlorogenic acid in TGY.The main reason for the higher l-ascorbic acid content in FJSX was the high expression levels of L-galactono-1,4-lactone hydrogenase(GalLDH)(CsTGY13G0000389)and Myo-inositol oxygenase(MIOX)(CsTGY14G0001769,and CsTGY14G0001770),which were regulated by WRKY(CsTGY11G0001197).Furthermore,FDDB,‘Longjing 43’(LJ43),‘Shuchazao’(SCZ)and‘Baihaozao’(BHZ)had higher free fatty acid contents,among which MYB(CsTGY14G0002344)may be a hub gene for the regulation of palmitoleic acid accumulation.More importantly,we found that the shoots of TGY were green with purple,mainly due to the accumulation of anthocyanins and the downregulation of the Mg-protoporphyrin IX nonomethyl ester cyclase(MPEC)(CsTGY10G0001989)gene that affects chlorophyll synthesis.These results will provide a theoretical reference for tea cultivar breeding and suitability. 展开更多
关键词 camellia sinensis TRANSCRIPTOMICS metabolomics WGCNA
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The high-resolution three-dimensional(3D)chromatin map of the tea plant(Camellia sinensis)
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作者 Weilong Kong Jiaxin Yu +2 位作者 Jingjing Yang Yanbing Zhang Xingtan Zhang 《Horticulture Research》 SCIE CSCD 2023年第10期4-7,共4页
Dear Editor,Tea plant(Camellia sinensis(L.)O.Kuntze)is one of the world’s most important non-alcoholic beverages,with great economic,health,and cultural value.Recently,several genomes of C.sinensis var.assamica(CSA)(... Dear Editor,Tea plant(Camellia sinensis(L.)O.Kuntze)is one of the world’s most important non-alcoholic beverages,with great economic,health,and cultural value.Recently,several genomes of C.sinensis var.assamica(CSA)(Yunkang 10),C.sinensis var.sinensis(CSS)(Shuchazao,Biyun,Longjing 43,Tieguanyin,Huangdan),and ancient tea plant(DASZ)have been deciphered[1-3]. 展开更多
关键词 sinensis camellia value.
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Natural variation of main biochemical components,morphological and yield traits among a panel of 87 tea [Camellia sinensis(L.) O. Kuntze] cultivars
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作者 Fawad Zaman EZhang +9 位作者 Li Xia Xielong Deng Muhammad Ilyas Ahmad Ali Fei Guo Pu Wang Mingle Wang Yu Wang Dejiang Ni Hua Zhao 《Horticultural Plant Journal》 SCIE CAS CSCD 2023年第3期563-576,共14页
Many attentions have been previously focused to identify the multiple biochemical components related to tea quality and health benefits,however, the natural variation of biochemical components present in tea germplasm... Many attentions have been previously focused to identify the multiple biochemical components related to tea quality and health benefits,however, the natural variation of biochemical components present in tea germplasm has not been adequately evaluated. In this study, the main biochemical components, leaf morphological and yield characteristics were evaluated for four rounds of tea leaves in a panel of 87 elite tea cultivars suitable for black, green, or oolong tea. Significant variations were observed among the tea cultivars, as well as seasonal differences in the levels of the free amino acid(FAA), caffeine(CAF), tea polyphenols(TP), water extract(WE) and TP to FAA ratio(TP/FAA). Results showed that the average levels of FAA showed a seasonal change, with the highest level of 4.0% in the 1st spring tea in the cultivars suitable for green tea and the lowest of 3.2% in summer tea in the cultivars suitable for black tea. The average CAF content was highest 3.2% in the cultivars suitable for oolong tea in the 1st spring and the lowest 2.5% in the cultivars suitable for green tea in summer. Limited seasonal and varietal variations were noticed in the average levels of WE among the three categories of tea. In addition, significant natural variation of the morphological characteristics, bud length varying from 2.5 cm to 8.7 cm, bud density from 190.3 buds · m-2to 1 730.3 buds · m-2, mature leaves biomass from 128.4 kg · hm-2to 2 888.4 kg · hm-2, and yield component traits of 100 buds(one bud with two leaves) dry weight from 3.7 g to37.7 g, tea yield/round from 444.6 kg · hm-2to 905.3 kg · hm-2, were observed. The aim of our evaluation was not only to identify the advantages of seasonal and clonal variations but also to provide a new viewpoint for their further application. Representative accessions were selected from the germplasm to promote the establishment of an inherent biochemical constituent expressing the quality of black, green, and oolong tea. The findings might be utilized to establish early selection criteria to enhance the tea breeding and production program. 展开更多
关键词 camellia sinensis Biochemical components GERMPlASM Natural variation Morphology Yield
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Research advances in aluminum tolerance and accumulation in tea plant(Camellia sinensis)
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作者 Xinwan Zhang Lin Liu +2 位作者 Shijie Luo Xiali Ye Weiwei Wen 《Beverage Plant Research》 2023年第1期166-176,共11页
Tea plant(Camellia sinensis)is widely planted on acidic soils where aluminum(Al)toxicity is considered as a primary factor limiting plant growth.Unlike most plant species,tea plant is Al tolerant and accumulates high ... Tea plant(Camellia sinensis)is widely planted on acidic soils where aluminum(Al)toxicity is considered as a primary factor limiting plant growth.Unlike most plant species,tea plant is Al tolerant and accumulates high levels of Al.Understanding the mechanisms underlying Al tolerance and accumulation in tea plant may contribute to the improvement of tea plant cultivation and development of Al-tolerant crops.In this review,we summarize recent advances in the uptake,transport and accumulation of Al in tea plant and the genetic and environmental factors that affect these processes.We further highlight recent studies of Al in tea plant based on omics approaches,including transcriptomics,proteomics,metabolomics,ionomics and microbiomics.We present perspectives for future research that will be helpful to decipher the mechanisms underlying Al tolerance and accumulation in tea plant. 展开更多
关键词 sinensis) camellia planted
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Mineral Elements in Different Varieties of Camellia sinensis 被引量:15
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作者 李春华 王云 《Agricultural Science & Technology》 CAS 2009年第1期105-107,共3页
To understand the mineral elements in different varieties of tea ( Camellia sinensis), 17 mineral elements in eight tea varieties including Yunnan Dayezhong, No. 43 Longjing and No. 6 Zaobaijian, were measured. The ... To understand the mineral elements in different varieties of tea ( Camellia sinensis), 17 mineral elements in eight tea varieties including Yunnan Dayezhong, No. 43 Longjing and No. 6 Zaobaijian, were measured. The results showed that nine elements, such as P, K, Ba, Mn, Cu, were significantly different among varieties, others did not. Black tea varieties usually contain high contents of Cu and K. As a conclusion, mineral elements should be extensively considered in breeding tea varieties. 展开更多
关键词 camellia sinensis BREEDING Mineral element
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中亚热带东部茶树(Camellia sinensis)叶片光合及呼吸的研究 被引量:8
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作者 黄承才 常杰 +2 位作者 葛滢 刘柯 徐青山 《科技通报》 1999年第3期173-177,共5页
茶树(Cameliasinensis)叶片光合速率(Pn)与光照强度(L)、气温(t)多元相关呈极显著水平,其回归方程可作为光合速率估算的模型;日光合量与平均气温呈极显著正相关,呼吸速率与气温呈极显著正相关,其回归方... 茶树(Cameliasinensis)叶片光合速率(Pn)与光照强度(L)、气温(t)多元相关呈极显著水平,其回归方程可作为光合速率估算的模型;日光合量与平均气温呈极显著正相关,呼吸速率与气温呈极显著正相关,其回归方程均可作为叶片日光合量、呼吸速率的估算模型.茶树的年净光合量、年呼吸量估算结果分别为3.43×104mgCO2·dm-2·a-1和3.53×104mgCO2·dm-2·a-1. 展开更多
关键词 茶树 光速速率 呼吸速率 叶片 中亚热带
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茶(Camellia sinensis Kuntze)离体培养体细胞胚胎发生的组织细胞学研究 被引量:15
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作者 王毅军 严学成 +1 位作者 暨淑仪 魏新姐 《热带亚热带植物学报》 CSCD 1994年第2期47-51,共5页
以茶树叶片为外植体.以MS培养基附加4mg·L-16-BA,2mg·L-1IAA.3mg·L-1GA3和0.2—0.3%活性碳诱导出愈伤组织和胚状体,进一步形成小植株.切片观察表明.茶叶愈伤组织胚状体的发... 以茶树叶片为外植体.以MS培养基附加4mg·L-16-BA,2mg·L-1IAA.3mg·L-1GA3和0.2—0.3%活性碳诱导出愈伤组织和胚状体,进一步形成小植株.切片观察表明.茶叶愈伤组织胚状体的发生,起源于愈伤组织表层及其内部的单个细胞和细胞团,胚状体发育顺序与合子胚大致相似.经球形胚、心形胚、鱼雷胚和子叶胚阶段.但发育过程中常有畸形胚出现. 展开更多
关键词 茶树 组织培养 体细胞 发生
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茶(Camellia sinensis)蜂花粉及其蜂粮的营养成分研究 被引量:16
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作者 苏松坤 陈盛禄 《上海交通大学学报(农业科学版)》 2002年第2期95-99,共5页
测定中国茶 (Camellia sinensis)的新鲜蜂花粉、5 d、1 0 d、1 5 d茶蜂粮中水解氨基酸的含量 ,茶蜂粮中平均含量为2 3 .3 6% ,比新鲜茶蜂花粉高 0 .2 6% ;新鲜茶蜂花粉和混合 (5~ 1 0 d)茶蜂粮样品中游离氨基酸含量分别为 1 0 3 7.46mg... 测定中国茶 (Camellia sinensis)的新鲜蜂花粉、5 d、1 0 d、1 5 d茶蜂粮中水解氨基酸的含量 ,茶蜂粮中平均含量为2 3 .3 6% ,比新鲜茶蜂花粉高 0 .2 6% ;新鲜茶蜂花粉和混合 (5~ 1 0 d)茶蜂粮样品中游离氨基酸含量分别为 1 0 3 7.46mg/1 0 0 g和 80 1 .75 mg/1 0 0 g。混合 (5~ 1 0 d)茶蜂粮和新鲜茶蜂花粉样品中维生素 A、B1 、B2 、C、D、E的含量 (mg/1 0 0 g)分别是0 .1 9、0 .1 5、1 .1 5、0 .3 1、0 .0 1 5 6、1 0 .2和 0 .79、0 .0 9、2 .74、1 .2 0、0 .0 1 5 8、6.6。新鲜茶蜂花粉和混合茶蜂粮样品中软脂酸、硬脂酸、亚油酸、亚麻酸的含量分别为 1 .3 %、0 .2 %、0 .1 6%、2 .5 %和 1 .1 %、1 .0 %、0 .3 %、1 .0 %。1 d茶蜂粮中的过氧化氢酶、淀粉酶的活力比新鲜茶蜂花粉高 ,而过氧化物歧化酶的活力则比新鲜茶蜂花粉略低 ;随着酿制时间的延长 ,茶蜂粮中过氧化氢酶、过氧化物歧化酶的活力下降 。 展开更多
关键词 营养成分 茶蜂花粉 氨基酸 维生素 脂肪酸 酶活力
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Study on the Transferability of Camellia sinensis EST-SSRs in Theaceae Plant
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作者 程小毛 陈自兰 王华 《Agricultural Science & Technology》 CAS 2011年第2期198-200,216,共4页
[Objective] The research aimed to study the transferability of Camellia sinensis EST-SSRs in Theaceae plant.[Method] Seven pairs of EST-SSRs primers which derived from Camellia sinensis EST sequence were used to ampli... [Objective] The research aimed to study the transferability of Camellia sinensis EST-SSRs in Theaceae plant.[Method] Seven pairs of EST-SSRs primers which derived from Camellia sinensis EST sequence were used to amplify the nineteen materials of Theaceae plant.[Result] Five pairs in the seven pairs of EST-SSRs primers could effectively amplify the nineteen tested varieties,and the transferability rate was 71.43%.The amplification rate of Camellia retiacalate FengShanCha,Camellia japouica CaiXia and Camellia retiacalate JuBan was the highest.The amplification rate of Camellia synaptica Sealy and Adinandra sagonica var.wallichiana(oc)Ming was the lowest.Moreover,four pairs in the five pairs of primers which could effectively amplify showed the rich polymorphism whose difference was obvious in the tested materials.[Conclusion] SSR primers which were developed from Camellia sinensis genome had the higher transferability in the different genus and species of Theaceae plant,could be used in the comparative genome research and analysis mark research of Theaceae plant. 展开更多
关键词 camellia sinensis EST-SSR Transferability Theaceae plant
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融合时序Sentinel数据多特征优选的南方丘陵区油茶种植区提取
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作者 李恒凯 王洁 +1 位作者 周艳兵 龙北平 《农业机械学报》 EI CAS CSCD 北大核心 2024年第7期241-251,共11页
油茶作为江西省经济林树种之一,也是江西省特色优势产业,准确获取其空间分布在产量估算、生产管理和政策制定等方面具有重要意义。本研究针对南方多云多雨气候导致光学影像不足,以及丘陵山区地形破碎问题,以江西省宜春市袁州区为研究区... 油茶作为江西省经济林树种之一,也是江西省特色优势产业,准确获取其空间分布在产量估算、生产管理和政策制定等方面具有重要意义。本研究针对南方多云多雨气候导致光学影像不足,以及丘陵山区地形破碎问题,以江西省宜春市袁州区为研究区,采用时序Sentinel系列影像数据和SRTM DEM数据为数据源,构建和优选了光谱特征、植被-水体指数、红边指数、雷达特征、地形特征和纹理特征共125个特征变量,其中,纹理特征采用累计差法(Δf)对比15种不同尺度窗口,计算Sentinel-1和Sentinel-2影像最佳纹理特征。基于ReliefF特征优选算法和随机森林分类算法,设计了8种特征组合方案开展实验,探讨不同特征类型对油茶提取精度的影响。结果表明:利用累计差法计算出的Sentinel-1和Sentinel-2的最佳纹理特征窗口尺寸均为35×35,最佳纹理特征组合为均值(Mean)、方差(Variance)和对比度(Contrast);在光谱特征、植被-水体指数的基础上加入不同特征对油茶进行分类,不同类型特征对油茶提取的有利程度由大到小依次为S2纹理特征、S1纹理特征、地形特征、雷达特征、红边指数,相比于单一光谱和指数特征,纹理特征的加入可大幅度提高分类精度。多特征协同分类结果优于单特征分类结果,基于特征优选的油茶提取精度最高;基于ReliefF算法特征优选后的方案精度最高,总体精度为88.29%,Kappa系数为0.81。本研究利用时序Sentinel系列遥感影像和DEM地形数据,构建了针对多云雨南方丘陵山区的大范围油茶遥感提取方法,可为中国南方丘陵区域油茶资源调查与监测提供参考。 展开更多
关键词 油茶 种植区提取 Sentinel-1 Sentinel-2 特征优选 累计差 RElIEFF算法
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