| 北方区试中甘薯农艺性状与产量的多元回归和通径分析 |
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| 引用本文： | 汪宝卿,王庆美,张海燕,解备涛,董顺旭,张立明.北方区试中甘薯农艺性状与产量的多元回归和通径分析[J].中国农学通报,2011,27(5):120-125. |
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| 作者姓名： | 汪宝卿 王庆美 张海燕 解备涛 董顺旭 张立明 |
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| 作者单位： | 山东省农科院作物所,济南,250100 |
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| 基金项目： | 由国家甘薯产业技术体系项目 |
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| 摘 要： | 应用多元统计方法，分析了甘薯北方区试中农艺性状与产量之间的关系。结果表明：农艺性状对鲜薯、薯干和淀粉产量的影响各不相同。回归分析发现，单株茎叶重、大中薯率、小薯率和单株结薯数与鲜薯和薯干产量之间存在显著的线性关系，单株茎叶重和干率与淀粉产量之间存在显著的线性关系。相关性分析发现，鲜薯产量与干率、淀粉率和病情指数均呈极显著负相关关系，与大中薯率显著正相关，与小薯率显著负相关。薯干产量与分枝数显著负相关，与干率呈显著正相关。淀粉产量与分枝数显著负相关，与干率和淀粉率均呈显著正相关。通径分析发现，淀粉率和大中薯率对产量的直接作用较大，而单株茎叶重、蔓长、分枝数和干率对鲜薯、薯干和淀粉产量的作用大小和作用方向均存在差异。因此，在高产栽培中，应选择茎基部粗、蔓长较短、分枝数较少、薯块大小较均匀、数量适中和大中薯率较高的品种。若进行高干率和高淀粉品种选育，还需注重干率和淀粉率等指标的选择。
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| 关 键 词： | 乳化工艺 乳化工艺 |
| 收稿时间： | 2010/11/1 0:00:00 |
| 修稿时间： | 2010/11/12 0:00:00 |
Multiple Regression and Path Analysis between Agronomic Traits and Yield of Sweetpotato(Ipomoea batatas L.) in Regional Trails of North China |
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| Wang Baoqing,Wang Qingmei,Zhang Haiyan,Xie Beitao,Dong Shunxu,Zhang Liming.Multiple Regression and Path Analysis between Agronomic Traits and Yield of Sweetpotato(Ipomoea batatas L.) in Regional Trails of North China[J].Chinese Agricultural Science Bulletin,2011,27(5):120-125. |
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| Authors: | Wang Baoqing Wang Qingmei Zhang Haiyan Xie Beitao Dong Shunxu Zhang Liming |
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| Institution: | Wang Baoqing,Wang Qingmei,Zhang Haiyan,Xie Beitao,Dong Shunxu,Zhang Liming ( Crop Science Research Institute,Shandong Academy of Agricultural Sciences,Jinan 250100) |
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| Abstract: | Multiple statistic methods were used to analyze relationship between agronomic traits and yield of sweetpotato in regional trails of North China. Results showed that effects of agronomic traits on fresh weight, dry weight and starch yield were different. Significant linear relationships existed between dry/fresh weight and weight of stem and leaf per plant, percentage of large and middle tuberous root, percentage of small tuberous root, and number of tuberous root per plant. The same relationship was also s... |
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| Keywords: | sweetpotato agronomic traits yield regression analysis correlation analysis path analysis |
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