| 摘要: |
| 【目的】探讨茄科植物果实的微形态学特征和差异，明确茄子对褐纹病的抗性与茄子果皮结构之间的关系。【方法】用扫描电镜对16个抗病性不同的茄子品种的果实表皮结构进行比较观察，采用聚类分析方法对茄子品种进行抗病类型划分。【结果】抗病茄子品种表皮厚度在75～105 μm，果实表皮细胞角质层厚，外果皮细胞层数多，细胞排列非常紧密；感病品种表皮厚度在65 μm以内，果实表皮细胞角质层薄，外果皮细胞层数少，细胞排列疏松。经聚类分析，高抗病品种（系）聚为第1类，抗病品种聚为第2类，所有的感病品种被聚成第3类。【结论】茄子的抗病性与果皮的组织结构有一定的关系。抗病品种的果皮普遍较厚，感病品种的果皮较薄，但也有果皮薄而抗病能力强的品种。 |
| 关键词: 茄子 褐纹病 果皮超微结构 抗病性 |
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| 基金项目:吉林省教育厅资助项目“茄子抗褐纹病基因分子标记研究及品种资源的抗性评价”（2013076） |
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| Relationship between Phomopsis vexans resistance and pericarp-ultra-structure of eggplant |
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CHEN Shanshan,SONG Shuyao,ZHAO Chunbo,et al
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| Abstract: |
| 【Objective】This study investigated the micro-morphological characteristics and differences in fruit of Solanaceae plant and analyzed the relationship between resistance of Phomopsis vexans and pericarp structure of eggplant.【Method】The pericarps of 16 eggplants were observed and compared with SEM and cluster analysis was conducted to classify resistance types.【Result】The thickness of epidermal cells was 75-105 μm in resistant varieties,the epidermal cells had thick stratum corneum,and pericarps had more layers of closely arranged cells.The thickness of epidermal cells was less than 65 μm in susceptible varieties, epidermal cells had thin stratum corneum,and pericarps had less layers of loose cells.The cluster analysis showed that the high resistant varieties (lines) belonged to the first type,the resistant varieties (lines) belonged to the second type,and all the susceptible varieties belonged to the third kind.【Conclusion】There was a certain relationship between disease resistance of eggplant and organization structure.The resistant varieties had thick pericarps,while the susceptible varieties had thin pericarps.There were also resistant varieties with thin pericarps. |
| Key words: eggplant Phomopsis vexans pericarp ultra structural disease resistance |
