乌龙茶幼年期性状与产量的相关性研究  

Relativity between growth characters of young tea plants with the yield and its early selection

作　　者：郭吉春[1] 叶乃兴[1] 郭专[1] 

机构地区：[1]福建省农业科学院茶叶研究所,福建福安355000

出　　处：《福建农业学报》2004年第4期228-231,共4页Fujian Journal of Agricultural Sciences

基　　金：福建省科技重大专项专题4(2004NZ02-4)重大项目(2001Z014)。

摘　　要：以中叶类型无性系乌龙茶品种为试验材料，观察分析其幼年期性状与产量的表型、遗传相关，结果表明，1～2龄期自然生长茶树树高、主干直径、分枝数与产量的相关不显著；3龄期自然生长茶树主干直径、分枝数、着叶数、定剪枝叶量，4龄期定剪枝叶量、春梢数，5龄期产量等7个性状与5～9龄5a 平均产量的表型、遗传相关均显著或极显著。据此提出，上述7个性状可以作为乌龙茶产量早期鉴定与选择的目标性状。对幼年期性状与产量的回归分析表明，3龄期主干直径、3～4龄期定剪枝叶量、5龄期产量与5～9龄5a 平均产量直线回归关系，而3龄期分枝数、着叶数，4龄期春梢数与5～9龄5a 平均产量呈对数回归关系。Using middle-leaf type and asexual Oolong tea varieties as experimental materials,the phenotypic andgenotypic relativities between growth characters of young tea plants and the yield were observed and analyzed.Theresults showed that the relation between the height.trunk diameter,branch number of naturally growing teaplants in the 1st—2nd year and the yield were not significant;the phenotypic and genotypic relativities amongtrunk diameter,branch number,leaf number of naturally growing tea plants in the 3rd year,leaf-branch amountsafter pruning practice during the 3rd—4th year's period,spring sprout number tea plants in the 4th year,the yieldin the 5th year with averaged 5-year yield during the 5th—9th year's period reached significant or very significant.It was suggested that the above seven characters could be served as the objective characters for early identificationon tea plants yield and variety selection.The regression analysis on growth characters and yield showed that therelation between trunk diameter in the 3rd year,leaf-branch number after pruning practice in the 4th year,yield inthe 5th year with averaged 5-year yield and the 5th—9th year's period were linear regression;whereas,therelation between branch number,leaf number,spring sprout number with averaged 5-year yield and the 5th—gthyear's period was a logarithmic regression.

关 键 词：乌龙茶 育种 幼年期性状 产量 相关分析 回归分析 早期选择 

分 类 号：S571.103[农业科学—茶叶生产加工]