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园艺学报 ›› 2003, Vol. 30 ›› Issue (6): 734-736.

• 研究报告 • 上一篇    下一篇

节瓜主要农艺性状的遗传相关与通径分析

李文嘉 方锋学 李立志 梁任繁 康德贤   

  1. (广西农业科学院蔬菜研究中心,南宁530007)
  • 收稿日期:2002-12-18 修回日期:2003-03-17 出版日期:2003-12-25 发布日期:2003-12-25

Correlation and Path Analysis of the M ain Agronomic Traits of Chieh-qua

Li Wenjia,Fang Fengxue,Li Lizhi,Liang Renfan,and Kang Dexia   

  1. (Vegetable Research C,enler of Guangxi Academy ofAgricultural Sciences,Nanning 530007,China)
  • Received:2002-12-18 Revised:2003-03-17 Online:2003-12-25 Published:2003-12-25

摘要: 选用8个节瓜品种研究了9个农艺性状的遗传相关和产量的通径分析。结果表明,农艺性状
间的遗传相关一般大于表型相关。相关分析表明,单株节瓜产量与前期产量呈极显著正相关,遗传相关系数r=0.861一,与其它农艺性状相关不显著。通径分析表明,单瓜质量和结果数两个性状对产量形成的直接作用最大,这两个性状对产量的决定系数总和达0.9910,可以作为节瓜高产育种的主要选择性状。

关键词: 节瓜, 农艺性状, 遗传相关, 通径分析

Abstract: The genetic correlation an d path an alysis of 9 agronomic characters were studied with 8 cultivars of Chieh—qua .Th e results showed that the phenotypic correlations were lower than genetic correlations. The genetic
correlation coeficient between the yield and the first ten days yield was very significant.r=0.861 .The results on genetic path analysis showed that the yield Was afected mostly by two agronomic traits,average fruit mass and
the number of fruits by tum.Therefore,these two characters could be taken as selection characters for high yield

Key words: Benincasa Cogn. vat. chieh—qua How., Agronomi c characters, Genetic correlation, Genetic path analysis

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