摘要
【目的】为探究江西省引种省外无性系茶树良种的适应性与特征特性,从中筛选出适宜推广种植的茶树良种。【方法】以25份省外引进无性系茶树良种为材料,测定其农艺性状、化学成分含量、抗逆性和制茶品质等15项性状指标,采用因子分析性状指标的贡献度与相关性,最终利用灰色关联度法对引种品种进行综合分析和评价。【结果】15项性状指标的变异系数范围为5.08%-57.20%,其中13项在10%以上,表明所引进的无性系茶树良种在江西省的适应性差异性较大,其中生长势、EGC、耐旱性、耐旱性最大,发芽密度、一芽二叶百芽质量、一芽一叶期、总游离氨基酸、EC、ECG、EGCG次之,水浸出物和绿茶品质得分最小;因子分析提取的5个主因子能够解释引种品种适应性的79.19%的信息,各性状对主因子均有相应的贡献,性状指标中生长势、发芽密度、耐寒性和耐旱性之间相关性较大,水浸出物、茶多酚、EGCG、EGC和一芽二叶百芽质量之间相关性较大,EGC、EC、咖啡碱和一芽一叶期之间相关性较大;灰色关联度综合评价显示有11个品种的加权关联度在0.7以上,综合评价最好,依次为浙农117、福鼎大白茶、浙农113、鄂茶1号、迎霜、湘波绿2号、浙农902、白毫早、名山白毫、玉笋和春雨1号,这些品种的制茶品质优良,生长势较强、产量较大,物候期早,化学成分含量优异和抗逆性较强;11份品种评价为中等;3份评价较差。【结论】灰色关联度法可应用于茶树引种品种的适应性评价,综合评价最好的11份茶树良种可以在实际生产中进一步推广种植,也可以作为茶树品种选育时的遗传亲本材料,评价中等和较差的应谨慎引种。
[Objective]To explore the adaptability and characteristics of introduced tea varieties from other provinces in Jiangxi Province,and select excellent varieties of tea plant suitable for popularizing and planting.[Method]15 indexes of agronomic characters,chemical components,stress resistance,tea quality,etc,of 25 introduced varieties were measured,factor analysis was used to analyze the contribution and correlation of characteristics.Finally,comprehensive analysis and evaluation were carried out by using the method of grey correlation degree.[Result]The coefficient of variation of the 15 character indexes ranged from 5.08%to 57.20%,13 of them were more than 10%,which indicated that the adaptability of the introduced superior varieties of tea plant from other provinces was quite different in Jiangxi Province,among them,growth potential,EGC,drought tolerance and drought tolerance were the highest,germination density,weight of one bud and two leaves,one bud and one leaf stage,total free amino acids,EC,ECG and EGCG were the second,and water extract and green tea quality score were the lowest.The five main factors were extracted by factor analysis,which explained 79.19%of the adaptability information of the introduced varieties,and each character had corresponding contribution to the main factor.The correlation among growth potential,germination density,cold tolerance and drought tolerance was significant,that among water extract,tea polyphenol,EGCG,EGC and weights of 100 one bud and two leaves,that among EGC,EC,caffeine and one bud and one leaf stage were also significant.The comprehensive evaluation of grey correlation degree showed that the weighted correlation degree of 11 varieties was more than 0.7,and the comprehensive evaluation was the best,which was in the order of Zhenong 117,Fudingdabai,Zhenong 113,Echa 1,Yingshuang,Xiangbolu 2,Zhenong 902,Baihaozao,Mingshanbaihao,Yushun and Chunyu 1.These varieties had good quality,strong growth potential,high yield,early phenophase,excellent chemical composition and stron
作者
王治会
李文金
杨普香
彭华
江新凤
李延升
岳翠男
李琛
WANG Zhihui;LI Wenjin;YANG Puxiang;PENG Hua;JIANG Xinfeng;LI Yansheng;YUE Cuinan;LI Chen(Jiangxi Sericulture and Tea Research Institute Key Laboratory of Tea Quality and Safety Control in Jiangxi Province,Nanchang 330202,China)
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2021年第4期731-739,共9页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家现代产业技术体系(CARS-19)-江西省现代农业产业技术体系建设专项(JXARS-02)-江西省茶叶质量与安全控制重点实验室(20192BCD40007)
江西省重点研发计划项目(20202BBF63004)。
关键词
茶树良种
引种
因子分析
灰色关联度
综合评价
excellent tea varieties
introduction
factor analysis
grey correlation degree
comprehensive evaluation
