| 南荻种质资源表型性状遗传多样性 |
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| 引用本文： | 项伟,易自力,肖亮,黄红梅,乔匿骎,黄靖.南荻种质资源表型性状遗传多样性[J].草业科学,2017,34(3). |
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| 作者姓名： | 项伟 易自力 肖亮 黄红梅 乔匿骎 黄靖 |
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| 作者单位： | 湖南农业大学生物科学技术学院,湖南长沙,410128;湖南农业大学生物科学技术学院,湖南长沙410128;芒属植物生态应用技术湖南省工程实验室,湖南长沙410128;芒属植物生态应用技术湖南省工程实验室,湖南长沙,410128;湖南农业大学东方科技学院,湖南长沙,410128 |
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| 基金项目： | 省部共建国家重点实验室培育基地科学基金开放项目，国家自然科学基金青年科学基金项目，湖南省研究生科研创新项目，“十二五”农村领域国家科技计划课题 |
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| 摘 要： | 本研究测定了采自于黄淮平原亚地区(ⅢD9a),江汉平原亚地区(ⅢD9b),赣南-湘东丘陵亚地区(ⅢD9d)和川、鄂、湘亚地区(ⅢD10c)4个植物区系32份南荻(Miscanthus lutarioriparius)种质材料的干物质产量、冠层高、花茎高、茎径、茎密度、叶长、叶宽、叶茎比、含水量9个表型性状,并采用巢式方差分析、偏相关分析和UPGMA聚类分析方法进行了数据分析。结果表明,1)干物质产量、冠层高、花茎高、茎径、茎密度和含水量6个表型性状在区系间存在显著差异(P0.05),9个表型性状在区系内均存在极显著差异(P0.01),其变异系数范围为13.53%~45.54%。2)干物质产量与茎径显著正相关(P0.05),与叶茎比显著负相关(P0.05);冠层高与花茎高、含水量极显著正相关(P0.01);茎径与叶茎比极显著正相关(P0.01);叶宽与叶长显著正相关(P0.05),与含水量显著负相关(P0.05);海拔与冠层高、茎径显著负相关(P0.05),与茎密度极显著正相关(P0.01);经度与干物质产量显著负相关(P0.05);纬度与茎密度极显著正相关(P0.01),与茎径显著负相关(P0.05)。3)采用UPGMA聚类方法进行综合聚类,4个区系被分为3类,黄淮平原亚地区和赣南-湘东丘陵亚地区为第Ⅰ类,该类群南荻植株较矮、茎秆细小、产量较小;江汉平原亚地区和川、鄂、湘亚地区为第Ⅱ类,该类群南荻植株高大、茎秆粗壮、产量大;江汉平原、赣南-湘东丘陵和川、鄂、湘3个亚地区的南部地区为第Ⅲ类,该类群南荻介于第Ⅰ类和第Ⅱ类之间。
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| 关 键 词： | 南获 表型性状 巢式方差分析 偏相关分析 聚类分析 |
Phenotypic diversity of germplasm resources from Miscanthus lutarioriparius |
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| Xiang Wei,Yi Zi-li,Xiao Liang,Huang Hong-mei,Qiao Ni-qin,Huang Jing.Phenotypic diversity of germplasm resources from Miscanthus lutarioriparius[J].Pratacultural Science,2017,34(3). |
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| Authors: | Xiang Wei Yi Zi-li Xiao Liang Huang Hong-mei Qiao Ni-qin Huang Jing |
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| Abstract: | In this research study,we determined nine phenotypic traits,dry matter yield,canopy height,panicle height,stem diameter,shoot density,leaf length,leaf width,leaf stem ratio,and moisture content,of 32 samples collected from the following subregions,Huanghuai plain(Ⅲ D9a),Jianghan plain(Ⅲ D9b),South Jiangxi-Eastern Hunan hilly(Ⅲ D9d),Sichuan,Hubei,and Hunan subregion(Ⅲ D10c).The above traits were determined usingnested,partial correlation,and unweighted pair group method with arithmetic mean (UPGMA) cluster analyses.The study revealed the following results.1)The coefficient of variation range of all nine phenotypic traits was 13.53％～45.54％,and they showed extremely significant changes based on subregions,but only six traits(dry matter yield,canopy height,panicle height,stem diameter,shoot density,and moisture content) changed significantly between subregions.2)There were significant positive correlations between dry matter yield and stem diameter,canopy height and panicle height or moisture content,stem diameter and leaf stem ratio,leaf width and leaf length,altitude and shoot density,and latitude and shoot density.However,significant negative correlations were observed between dry matter yield and leaf to stem ratio,leaf width and moisture content,altitude and canopy height or stem diameter,longitude and dry matter yield,and latitude and stem diameter.3)The UPGMA clustering analysis showed that four floras could be divided into three categories.Huanghuai Plain and Jianghan Plain subregions belong to group Ⅰ,and they were shorter,thinner,and produced a lower yield.The South Jiangxi-Eastern Hunan Hilly,Sichuan,Hubei,and Hunan subregions belong to group Ⅱ,and they were longer,thicker,and showed higher yields.Furthermore,the South of Jianghan Plain,South Jiangxi-Eastern Hunan hilly,and Sichuan-Hubei-Hunan subregions belong to group Ⅲ,and they showed characteristics that were between those of group Ⅰ and Ⅱ. |
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| Keywords: | Miscanthus lutarioriparius phenotypic traits nested analysis partial correlation analysis cluster analysis |
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