| 叶片物理性状对玉米杂交种京科968防御二斑叶螨危害的影响 |
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| 引用本文： | 陈亚丰,王甦,赵久然,任雯,石子,邸宁,金道超.叶片物理性状对玉米杂交种京科968防御二斑叶螨危害的影响[J].环境昆虫学报,2022,44(1):229-235. |
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| 作者姓名： | 陈亚丰 王甦 赵久然 任雯 石子 邸宁 金道超 |
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| 作者单位： | 1. 贵州大学昆虫研究所，贵州山地农业病虫害重点实验室，农业农村部贵阳作物有害生物科学观测实验站，贵阳 550025；2. 北京市农林科学院植物保护环境保护研究所，北京 100097；3. 北京市农林科学院玉米研究中心，玉米DNA指纹及分子育种北京市重点实验室，北京 100097 |
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| 基金项目： | 北京市农林科学院创新能力建设专项（KJCX20200420）；国家重点研发计划项目（2018YFD02004）；北京市农林科学院青年基金项目（QNJJ201917）；北京市优秀人才计划项目（2018000020060G181）；国家自然科学基金青年项目（31901945） |
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| 摘 要： | 叶螨(Acari:Tetranychidae)危害是造成玉米减产的重要原因之一,其中二斑叶螨Tetranychus urticae Koch是我国玉米Zea mays L.生产中的主要害螨之一.抗螨玉米品种的选育是有效防治叶螨的途径之一.本研究以我国广泛种植的玉米杂交种京科968及其母本京724、父本京92,先玉335...
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| 关 键 词： | 京科968 先玉335 二斑叶螨 种群动态 叶片厚度 表皮毛密度 |
Effects of leaf physical characters of maize hybrid Jingke 968 on the resistance to Tetranychus urticae Koch (Acari: Tetranychidae) |
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| CHEN Ya-Feng,WANG Su,ZHAO Jiu-Ran,REN Wen,SHI Zi,DI Ning,JIN Dao-Chao.Effects of leaf physical characters of maize hybrid Jingke 968 on the resistance to Tetranychus urticae Koch (Acari: Tetranychidae)[J].Journal of Environmental Entomology,2022,44(1):229-235. |
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| Authors: | CHEN Ya-Feng WANG Su ZHAO Jiu-Ran REN Wen SHI Zi DI Ning JIN Dao-Chao |
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| Institution: | 1. Institute of Entomology, Guizhou University, Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Scientific Observing and Experimental Station of Crop Pests in Guiyang, Ministry of Agricultural and Rural Affairs, P. R. China, Guiyang 550025, China; 2. Institute of Plant and Environment Protection, Beijing Academy of Agriculture & Forestry Sciences, Beijing 100097, China; 3. Maize Research Center, Beijing Academy of Agriculture & Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China |
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| Abstract: | Damage by spider mites (Acari: Tetranychidae)is one of the important causes of maize yield loss. Tetranychus urticae Koch is one of the main pest mites in maize production in China. The breeding of Zea mays L. varieties resistant to spider mites is one of the effective methods to reduce the loss. To clarify the relationship between the spider mite resistance of maize and leaf physical characters (leaf thickness and trichome density), the maize hybrid Jingke 968, which is a variety widely cultivated in China, and its female parent Jing 724 and male parent Jing 92, as well as the hybrid Xianyu 335 and its female parent PH6WC and male parent PH4CV were used as materials to determine the roles of these characters in against T. urticae. Firstly, the population dynamics of T. urticae on different maize materials were compared under field conditions. Then the correlations of the resistance to T. urticae in the maize with different leaf thicknesses and trichome densities were further studied. The results showed that T. urticae population density of Jingke 968 was significantly lower than that of Xianyu 335. The resistance of the six maize materials to T. urticae was as follows: Jing 92>Jingke 968>PH4CV>Jing 724>Xianyu 335>PH6WC according to its daily average amount. We also found that the daily average amount of T. urticae was positively correlated with trichome density, and was negatively correlated with leaf thickness. In addition, regression analyses showed that trichome density played an important role in maize resistance to T. urticae. From the view of managing T. urticae, Jingke 968 was proposed as a better variety to reduce T. urticae damage in the production. This study revealed that leaf physical characteristics of maize played an important role in spider mite resistance and provided a theoretical basis for the breeding of spider mite resistance of maize varieties. |
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| Keywords: | Jingke 968 Xianyu 335 Tetranychus urticae population dynamics leaf thickness trichome density |
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