| 甘薯几个主要性状的通径分析与育种选择 |
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| 引用本文： | 余金龙,彭明碧,毕成新.甘薯几个主要性状的通径分析与育种选择[J].西南科技大学学报(哲学社会科学版),1994(4). |
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| 作者姓名： | 余金龙 彭明碧 毕成新 |
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| 作者单位： | 绵阳市农科所 |
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| 摘 要： | 用徐著18X绵粉一号的F1代实生苗植株对甘薯的七个性状进行了通径分析。结果表明：薯干产量与鲜苕产量关系最密切（r＝0．9332**），与烘干率相关不显著（r＝0．1894），分枝数与鲜苕产量极显著相关（r=0．5078**），对鲜苕产量的贡献最大（直接贡献量0.8599）。分枝数可作为甘薯育种中著干产量选择的参考指标，以提高选择的准确性。
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| 关 键 词： | 甘薯 通径分析 产量选择 |
PATH ANALYSIS ON SEVERAL MALN TRAITS OF SWEET POTATO AND BREEDING SELECTION |
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| Yu Jinlong, Pen Mingbi, Bi Chengxin.PATH ANALYSIS ON SEVERAL MALN TRAITS OF SWEET POTATO AND BREEDING SELECTION[J].Journal of Southwest University of Science and Technology,1994(4). |
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| Authors: | Yu Jinlong Pen Mingbi Bi Chengxin |
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| Abstract: | The path analysis on 7 traits of swee t potato was conductedwith 30 radom-selected F1 plants derived flom Xushu18 x Mianfen 1. TheresuIt shows that the heighest dry tuber xvt comes from the heighest freshtuber wt, the number of vine branches closely relates with and has thegreatest contributions to the fresh tuber wt. So the number of vine branches can be used as the reference trait for yield selection in breeding. |
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| Keywords: | Sweet potato path Analysis Breeding Selection |
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