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| 影响苜蓿产草量相关性状的通径分析 | |
| 引用本文： | 韩路,贾志宽,韩清芳,王海珍.影响苜蓿产草量相关性状的通径分析[J].西北农业学报,2003,12(1):15-20. |
| 作者姓名： | 韩路 贾志宽 韩清芳 王海珍 |
| 作者单位： | 1. 西北农林科技大学干旱中心,陕西,杨凌,712100;塔里木农垦大学植物科技学院,新疆,阿拉尔,843300 2. 西北农林科技大学干旱中心,陕西,杨凌,712100 3. 塔里木农垦大学植物科技学院,新疆,阿拉尔,843300 |
| 基金项目： | 农业部948项目"高产优质抗逆苜蓿新品种的引进及繁育"(2001-372),陕西省科技厅攻关项目(2001K01-G12-04),教育部重点研究项目"农牧交错区草业助推技术体系研究"(重点01167). |
| 摘 要： | 研究了31个国内外优良苜蓿品种单株产量与相关性状间的关系。经分析,单株产量与各性状的相关系数均达极显著或显著水平。以8个相关性状为自变量,以单株产量为因变量,采用通径分析方法计算了各自变量与依变量的通径系数和偏相关系数。茎粗、单株分枝数对产量的作用既有直接正效应,也有间接正效应且偏相关系数达显著水平。茎粗、单株分枝数具有较大的决策系数,对产量起主要决定作用;节间数最小,为主要限制因子。 |
| 关 键 词： | 相关性状 通径分析 偏相关系数 决策系数 |
| 文章编号： | 1004-1389(2003)01-0015-06 |
| 收稿时间： | 2002/8/28 0:00:00 |
| 修稿时间： | 2002年8月28日 |
Path Analysis of Correlation Traits Affecting Yield of Single Alfalfa Plant |
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| HAN Lu,JIA Zhikuan,HAN Qingfang and WANG Haizhen.Path Analysis of Correlation Traits Affecting Yield of Single Alfalfa Plant[J].Acta Agriculturae Boreali-occidentalis Sinica,2003,12(1):15-20. | |
| Authors: | HAN Lu JIA Zhikuan HAN Qingfang and WANG Haizhen |
| Institution: | Arid Center of Northwest Sci Tech University of Agriculture and Forestry, Yangling Shaanxi 712100, China;Institute of Plants Science and Technology of Tarim Agriculture Reclamation University, Alar Xinjiang 843300, China;Arid Center of Northwest Sci Tech University of Agriculture and Forestry, Yangling Shaanxi 712100, China;Arid Center of Northwest Sci Tech University of Agriculture and Forestry, Yangling Shaanxi 712100, China;Institute of Plants Science and Technology of Tarim Agriculture Reclamation University, Alar Xinjiang 843300, China |
| Abstract: | The correlations of correlation traits and yield of single alfalfa plant of thirty-one excellent alfalfa varieties were studies.The correlation coefficients were calculated.The results showed that there was significant positive correlation.The correlation traits were used as independent variables and yield of single plant was used a dependent variables for Path A nalysis.The results showed stem diameter and the number of shoots perstem have direct positive effect and indirect positive effect on yield of single alfalfa plant,their partial correlation coefficient were significant correlation.They have large decision coefficient and become a principal decision variable,number of internodes of perstem have minor decision coefficient and become a principal restricted variable. |
| Keywords: | Correlation trait Path analysis Partial correlation coefficient Decision coefficient Alfalfa Yield |
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