Cold Resistance Evaluation and Improved Varieties Selection of 30 Clonal Tea Trees in Shandong
[Objective]The clonal tea tree varieties with adaptability and suitability in Shandong tea-growing area were screened to enrich the resources of improved tea tree varieties and promote the development of tea industry in Shandong.[Method]The field natural evaluation,leaf anatomical structure analysis,performance trait comparison and tea sensory evaluation of 30 clonal tea tree varieties(Longjing Changye,Longjing 43,Zhongcha 108,etc.)were carried out to analyze the cold resistance,adaptability and suitability of each variety.[Result]12 varieties,including Longjing Changye,Longjing 43,Zhongcha 108,Jiukengzao,Pingyang Tezao,Echa 1,Bixiangzao,Fuding Dabaicha,Maolv,Baihaozao,Jinxuan and Jinguanyin,showed relatively strong cold resistance with cold resistance index>2.5;11 varieties,including Longjing 43,Zhongcha 108,Jiukengzao,Longjing Changye,Jinxuan,Baihaozao,Fuding Dabaicha,Echa 1,Bixiangzao,Zhenong 113 and Yingshuang,showed better survival rate and yield performance with survival rate≥92.69%and yield≥32.6 kg/667m2;The shape,liquid color,aroma,taste and leaf base in 9 varieties,including Longjing 43,Zhongcha 108,Jiukengzao,Longjing Changye,Jinxuan,Baihaozao,Fuding Dabaicha,Echa 1 and Bixiangzao,showed total sensory evaluation scores≥88.85;[Conclusion]Based on comprehensive analysis of cold resistance,survival rate and yield factors,9 varieties with relatively strong cold resistance,excellent field performance,high yield and good quality are selected,including Longjing 43,Zhongcha 108,Jiukengzao,Longjing Changye,Jinxuan,Baihaozao,Fuding Dabaicha,Echa 1 and Bixiangzao,which belong to the tea excellent varieties with adaptability and suitability in Shandong.
clonal tea treecold resistanceperformance traitadaptability and suitabilityexcellent varietyShandong