| 象草若干生物学性状与产量的关系分析 |
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| 引用本文： | 张霞,顾洪如,丁成龙,冉景松,许能祥.象草若干生物学性状与产量的关系分析[J].草地学报,2009,17(5):670-674. |
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| 作者姓名： | 张霞 顾洪如 丁成龙 冉景松 许能祥 |
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| 作者单位： | 江苏省农业科学院畜牧研究所, 南京, 210014 |
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| 基金项目： | 江苏省博士后基金，国家科技计划 |
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| 摘 要： | 为研究不同类型象草(Pennisetum purpureum Schum.)产量与形态特征之间的关系,以杂交狼尾草(Pennis-etum americanum×P.purpureum)为对照,于2007年对16个象草实生苗株系以及紫象草(114)进行研究,对产量、叶/茎比、株高、分蘖数、叶长、叶宽以及茎粗等生物学性状进行了分析。结果表明:所有调查性状品系间存在显著差异(P<0.05);株高、分蘖数与产量成极显著正相关(P<0.01);叶长、叶/茎比与产量成极显著负相关(P<0.01);通径分析认为株高、叶/茎比对产量的直接作用最大;根据产量、株高以及叶/茎比等生物学性状可将参试材料分为矮生多蘖、较高中蘖、较高少蘖以及高大少蘖共4种类型。
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| 关 键 词： | 象草 产量 生物学性状 相关分析 通径分析 聚类分析 |
| 收稿时间： | 2008-06-16 |
Relation Analysis between Yield and Morphological Traits in Pennisetum Purpureum Schum. |
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| ZHANG Xia,GU Hong-ru,DING Cheng-long,RAN Jing-song,XU Neng-xiang.Relation Analysis between Yield and Morphological Traits in Pennisetum Purpureum Schum.[J].Acta Agrestia Sinica,2009,17(5):670-674. |
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| Authors: | ZHANG Xia GU Hong-ru DING Cheng-long RAN Jing-song XU Neng-xiang |
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| Institution: | Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu Province 210014, China |
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| Abstract: | In order to study the relationship between yield and morphological traits in napier grass,some important morphological traits including yield,leaf/stem ratio,plant height,tillers plant-1,leaf length,leaf width,and stem diameter of 16 lines of napier grass and one purple napier grass and hybrid penisetum(pearl millet×napier grass) as control were investigated in 2007.The results were as follows: The differences were significant for investigated traits among tested lines.There were significantly positive correlations between yield and plant height,tillers plant-1(P<0.01) and significantly negative correlations between yield and leaf length,leaf/stem ratio(P<0.01).Plant height and leaf/stem ratio had the most important contribution to yield.The tested lines were divided into four groups by clustering analysis based on dry yield,leaf/stem ratio,plant height,etc.The four groups were dwarf and numerous tillers type,semi-dwarf and more tillers type,intermediate height and less tillers type,and high plant and less tillers type. |
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| Keywords: | Pennisetum purpureum Schum Yield Morphological traits Correlation analysis Path analysis Cluster analysis |
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