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芒果果实抗病性差异及其与果皮结构相关性初探

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测定接种炭疽病菌对紫花芒和爱文芒贮藏期间果实硬度、果皮相对电导率及病情指数变化的影响,同时观察2个芒果品种的果皮解剖结构,探讨芒果果实抗病性与果皮结构的相关性.结果表明:采后室温条件下,爱文芒较紫花芒易感病,表现在感病爱文芒硬度下降和相对电导率升高均较紫花芒快,病情指数也显著高于紫花芒.爱文芒的表皮结构明显较紫花芒疏松,且厚壁组织细胞层数较少,角质膜较薄,维管束组织距外表皮距离较近.这2种芒果果皮结构的明显差异可能是导致抗病性不同的原因之一.
The Relationship Between the Disease Resistance and Pericarp Structure in Mango (Mangifern indica)
In order to define the relativeship between the pericarp structure and disease resistance in Mango, fruit hardness, changes of electrical conductivity and disease index were tested on Zihua and Irwin mango and the difference of disease resistance was defined. At the same time, the paraffin section was conducted for observing the pericarp structure. The results showed that compared with Zihua mango, Irwin mango fruit hardness was decreased rapidly, conductivity was increased rapidly, the disease index for Irwin mango was higher than that of Zihua mango. Irwin mango has loose pericarp structure, and sclerenchyma cell layers was lesser, cuticle thickness was thin, the distance between vascular tissue and epidermal layer was lesser than Zihua mango. Above these may be one of the reason why pathogen infection was easier to Irwin mango than to Zihua mango.

MangoAnatomical structureDisease resistance

常金梅、张鲁斌、柳凤、詹儒林

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中国热带农业科学院南亚热带作物研究所 海南省热带园艺产品采后生理与保鲜重点实验室 ,广东湛江524091

芒果 解剖结构 抗病性

海南省自然科学基金:农业部南亚办农作物病虫鼠害疫情监测与防治财政专项

808183

2012

热带作物学报
中国热带作物学会

热带作物学报

CSTPCDCSCD北大核心
影响因子:0.807
ISSN:1000-2561
年,卷(期):2012.33(11)
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