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首页> 外文期刊>International journal of agricultural research >Thickness of the cocoa pod husk and its moisture content as resistance factors to Phytophthora pod rot.
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Thickness of the cocoa pod husk and its moisture content as resistance factors to Phytophthora pod rot.

机译：可可荚果壳的厚度及其水分含量是对

腐霉菌荚果腐烂的抵抗因子。

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摘要

Pod husk thickness and percentage moisture content were evaluated for their influence on Phytophthora palmivora infection of resistant, moderately resistant and susceptible selections of cocoa. The aim of this work was to elucidate if thickness of the pod husk and its moisture content are resistance factors to Phytophthora pod rot in cocoa genotypes. Twelve cocoa genotypes were inoculated with Phytophthora palmivora using detached pod test at penetration and post-penetration stages of inoculation. Cocoa genotypes resistant to Phytophthora palmivora in the field and in the laboratory inoculation (SCA 6, GU225V, T85/799 and LAF 1) had the thickest pod husk and lowest moisture content in the current study suggesting that pod husk thickness and moisture content factors were involved. Susceptible cocoa clones had the thinnest pod husk and highest percentage moisture content of pod husk, suggesting that thinner pod husk with high moisture content favours Phytophthora pod rot infection. A significant negative correlation was obtained between pod husk thickness and lesion number and size on pods indicating that as thickness of the pod husk increases, lesion number and size decreases. Correlation between moisture content of pod husk and lesion number and size on pod was positive and significant suggesting that as moisture content increases, lesion number and lesion size also increases. These results suggest pod husk thickness and moisture content as resistance factors in cocoa. Nevertheless, other pod husk factors could not be excluded.Digital Object Identifier http://dx.doi.org/10.3923/ijar.2011.310.322
机译：评价了豆荚厚度和水分含量对可可豆抗性，中度抗性和易感性选择对棕榈疫霉的感染的影响。这项工作的目的是弄清楚豆荚果皮的厚度及其含水量是否是可可基因型中对腐霉菌荚腐烂的抵抗因素。在接种的穿透和穿透后阶段，使用分离荚果试验对12种可可豆基因型进行了

Phytophthora palmivora 接种。在田间和实验室接种（SCA 6，GU225V，T85 / 799和LAF 1）中，对 Phytophthora palmivora 具抗性的可可基因型具有最厚的豆荚壳和最低的水分含量，表明该豆荚涉及壳厚度和水分含量因子。易感的可可豆荚的豆荚最薄，豆荚水分含量最高，这表明豆荚薄且水分含量高有利于疫霉菌的腐烂。在荚果皮厚度与荚果上的病变数目和大小之间获得显着的负相关，表明随着荚果皮厚度的增加，病变数目和大小减小。荚果皮的水分含量与荚果上的病变数目和大小之间的相关性是正向且显着的，这表明随着水分含量的增加，病变数目和病变大小也会增加。这些结果表明荚果皮的厚度和水分含量是可可中的阻力因子。尽管如此，其他豆荚壳因素也无法排除。数字对象标识符http://dx.doi.org/10.3923/ijar.2011.310.322

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