| 赣无系列19个油茶品系生长性状变异分析 |
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| 引用本文： | 王楚天,胡冬南,游璐,钟琳珊,沈晋,罗汉东,孟凡虎,王新新.赣无系列19个油茶品系生长性状变异分析[J].江西农业大学学报,2016(5):905-912. |
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| 作者姓名： | 王楚天 胡冬南 游璐 钟琳珊 沈晋 罗汉东 孟凡虎 王新新 |
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| 作者单位： | 江西农业大学 园林与艺术学院,江西 南昌,330045 |
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| 基金项目： | 国家自然科学基金项目(31560218)，江西省科技支撑计划重大项目(20152ACF60014) Project supported by the National Natural Science Foundation of China(31560218)，the Key Project of Jian-gxi Science and Technology Support Program(20152ACF60014) |
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| 摘 要： | 选取了赣无系列19个油茶品系为研究对象,对其株高、地径、东西冠幅、南北冠幅、叶长、叶宽、叶长宽比、叶面积等8个生长性状进行分析,结果表明:赣无系列19个油茶品系间与品系内均存在不同程度的表型变异。叶片性状重复力高于树体性状,各性状重复力依次为叶宽(0.95)、叶面积(0.95)、叶长(0.93)、叶长宽比(0.88)、东西冠幅(0.85)、南北冠幅(0.83)、株高(0.69)和地径(0.56);各生长性状变异系数依次为东西冠幅(26.84%)、南北冠幅(26.81%)、叶面积(15.50%)、叶长宽比(15.49%)、地径(12.56%)、株高(11.03%)、叶宽(10.69%)及叶长(7.12%);通过方差分析和多重比较结果表明:赣无11、赣无1、赣无2和赣8四个品系多项生长性状与其他品系相比差异达到显著水平;进一步采用主成分分析对19个油茶品系进行评价,结果表明:赣无11、赣无1、赣无16、赣8、赣无2以及赣447品系相对较优,赣无15、赣190、赣抚20和赣石84-3品系次之;通过聚类分析将这19个油茶品系分为5个大类,聚类分析结果与主成分分析结果相似。综合来看,所调查油茶品系的生长性状变异幅度较大,遗传多样性水平较高,本研究结果可为油茶种质资源收集和良种选育提供参考。
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| 关 键 词： | 油茶 生长性状 变异 |
A Variation Analysis of Growth Characters of Nineteen Clones of Camellia oleifera Group Gan |
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| Abstract: | 19 clones of Camellia oleifera Group Gan were selected as the research object.The plant height, ground diameter,east-west crown width,north-south crown width,leaf length,leaf width,leaf aspect ratio,leaf area,all tegether eight growth characters were analyzed.The results indicated that in or among the different 19 clones and within the plant had different degrees of phenotypic variation. The repeatability was as follows:leaf width 0.95,leaf area 0.95,leaf length 0.93,leaf aspect ratio 0.88,east-west crown width 0.85,north-south crown width 0.83,plant height 0.69 and ground diameter 0.56.Meanwhile,the growth character variation coeffi?cients were as follows:east-west crown width 26.84%,north-south crownwidth 26.81%,leaf area 15.50%,leaf aspect ratio 15.49%,ground diameter 12.56%,plant height 11.03%,leaf width 10.69% and leaf length 7.12%;the analysis of variance and the multiple comparison results showed that every growth character among the 19 clones all had different degrees of variation,and the differences in the multiple growth characters of Ganwu11,Ganwu1,Ganwu2 and Gan8 compared with other clones reached a significant level;the analysis of the principal components of the 19 clones,indicated that Ganwu11,Ganwu1,Ganwu16,Gan8,Ganwu2 and Gan447 were of relatively high quality,followed by Ganwu15,Gan190,Ganfu20 and Ganshi84?3;the clustering analysis results showed that these 19 clones could be divided into five categories,moreover,the growth characters of Ganwu11, Ganwu1,Ganwu2 and Gan8 had a better performance.Taken together,the variation amplitude of the 19 clones was relatively large,and the levels of genetic diversity were relatively high.The results of this variation analysis provide reference for collection of germplasm resources and breeding of fine varieties. |
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| Keywords: | Camellia oleifera growth character variation |
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