不同枸杞品种感蚜部位的物理性状及其抗蚜性
Study on the External Traits of Insect Resistance of Four Kinds of Wolfberry to Cotton Aphid
为研究不同枸杞品种感蚜部位的物理性状与蚜量比值之间的相关性,分析不同枸杞品种叶片蜡质层质量比、维管束埋深、角质层厚度等物理性状的差异,利用蚜量比值法对不同枸杞品种的抗蚜性进行鉴定。结果表明:宁杞1号为高抗品种,宁杞5号和宁杞7号为抗性品种,宁杞10号为感蚜品种。其中,枸杞感蚜品种宁杞10号与抗蚜品种宁杞1号相比,叶片更大且厚,蜡质质量比更低,维管束埋深浅,角质层更薄。13个物理性状与蚜量比值的相关性分析表明,外果皮厚度、叶片下表皮厚度、叶片维管束埋深、叶片角质层厚度与蚜量比值极显著负相关,果实蜡质质量比、果实角质层厚度、叶片蜡质质量比、叶片上表皮厚度与蚜量比值显著负相关,叶片厚度与蚜量比值之间显著正相关,嫩梢蜡质质量比、中果皮厚度、内果皮厚度、果实维管束埋深与蚜量比值间的相关性不显著。
In order to study the correlation between the physical properties of the aphid-susceptible parts of different Lycium barbarum varieties and the ratio of aphid number, the differences of physical properties such as wax layer content, vascular bundle depth and cuticle thickness in leaves of different Lycium barbarum varieties were analyzed, and the aphid resistance of different Lycium barbarum varieties was identified by the ratio of aphid number. The results showed that ‘Ningqi-1’ was a high-resistant variety, ‘Ningqi-5’ and ‘Ningqi-7’ were resistant varieties, and ‘Ningqi-10’ was a susceptible variety. Among them, compared with the aphid-resistant variety ‘Ningqi-1’, the aphid-susceptible variety ‘Ningqi-10’ had larger and thicker leaves, lower wax mass ratio, shallower vascular bundle depth, and thinner cuticle. The correlation analysis of 13 physical traits and the ratio of aphids showed that the thickness of outer pericarp, the thickness of lower epidermis of leaves, the depth of vascular bundle of leaves and the thickness of cuticle of leaves were significantly negatively correlated with the ratio of aphids. The mass ratio of fruit wax, the thickness of cuticle of fruits, the mass ratio of leaf wax and the thickness of upper epidermis of leaves were significantly negatively correlated with the ratio of aphids. There was a significant positive correlation between the thickness of leaves and the ratio of aphids. There was no significant correlation between the mass ratio of shoot wax, the thickness of mesocarp, the thickness of endocarp, the depth of vascular bundle of fruits and the ratio of aphids.
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国家自然科学基金项目(31660630)
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