咖啡(Coffea arabica L.)产量与产量属性的关联及通径分析在埃塞俄比亚南部阿瓦达的西达玛特色咖啡种植区

Gizachew Atinafu, H. Mohammed
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引用次数: 6

摘要

在埃塞俄比亚南部的Sidama精品咖啡生态区,采用扩增设计和4次重复试验,对120份阿拉比卡咖啡种质资源和4次标准检验进行了19个数量性状的评价。本研究旨在探讨各数量性状间的性状相关及通径系数的性质。结果表明,在大多数性状中,基因型相关系数高于相应的表型相关系数。百粒青豆重、茎粗、冠粗、一次枝平均长、一次枝结实率和叶长是与咖啡青豆产量呈正相关的最重要性状。通径分析表明,在不同产量贡献性状中,株高、叶长、叶宽、百粒青豆重、一次枝结实率、茎粗、一次枝平均长和咖啡果病侵染对青豆重有直接和间接影响。因此,通过这些性状来选择咖啡中的咖啡绿豆产量将是有效的,以提高埃塞俄比亚的咖啡产量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Association and Path Coefficient Analysis of Yield and Yield Attributes of Coffee ( Coffea arabica L.) Under Sidama Specialty Coffee Growing Area, Awada, Southern Ethiopia
One hundred twenty germplasm collections of arabica coffee and four standard checks were evaluated for 19 quantitative traits using augmented design with four replications of the checks at Sidama specialty coffee ecology, Southern Ethiopia. The objective of the study was to address the nature of characters correlation and path coefficient among various quantitative traits. The result showed that in most of the traits, genotypic correlation coefficients were higher than the corresponding phenotypic correlation coefficients. Hundred green bean weight, stem diameter, canopy diameter, average length of primary branches, percent of bearing primary branches and leaf length were the most important traits which possessed positive association with coffee green bean yield. Likewise, path coefficient analysis was revealed that among the different yield contributing traits plant height, leaf length, leaf width, hundred green bean weight, percentage of bearing primary branches, stem diameter, average length of primary branches and coffee berry disease infestation influenced green bean weight directly and indirectly. Thus, selection for coffee green bean yield in coffee through these traits would be effective in order to boost the coffee production in Ethiopia.
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