摘要
玉米品种京科968具有众多综合优良特性,是北方春玉米区的主栽品种。为了解京科968穗期对亚洲玉米螟的抗性水平,并探明其抗螟机制,本试验选取京科968,其母本京724和父本京92,以及自330等4个玉米品种(系)作为供试玉米材料,其中自330作为感螟对照。通过实验种群生命表技术对取食4个玉米品种(系)花丝的亚洲玉米螟种群的生命表参数进行评价,并对花丝中营养物质、防御酶以及丁布类等化合物的含量进行分析。生命表结果显示,4个玉米品种(系)抗螟性大小依次为:京92>京科968>京724>自330。与京724和感虫对照自330相比,取食京科968花丝的亚洲玉米螟发育历期延长,平均世代周期长,说明京科968的花丝具有一定抗螟效果;生化分析结果显示京科968花丝中的具有较高的可溶性糖、可溶性蛋白质、多酚氧化酶和超氧化物歧化酶含量,而DIMBOA和DIMBOA-Glc的含量均较低,说明玉米防御酶可能在花丝抗螟中发挥重要作用。
Corn hybrid Jingke 968, is one of the main planted corn varieties in north China with good comprehensive characteristic. In order to understand the resistance of Jingke 968 and its resistant mechanism to Asian corn borer (ACB), Ostrinia furnacalis , in silking stage, Jingke 968, its female parent Jing 724 and male parent Jing 92 were selected in the experiment, inbred line Zi 330, susceptible to ACB, was as the control. The parameters of the ACB population fed on silk of the four tested corn hybrids (inbreds) were evaluated by life table technique, the content of nutrient, defense enzyme and DIMBOA compounds in silk was analyzed. Results showed that the resistance level of corn silk to ACB of the tested corn hybrid or inbreds were arranged as follows from resistant to susceptible: Jing 92> Jingke 968> Jing 724>Zi 330. And the growth and development time of ACB population fed on Jingke 968 silk was prolonged and the mean generation time was longer compared with Jing 724 and Zi 330. The silk of Jingke 968 was resistant to ACB to some extent. Biochemical analysis showed that the silk of Jingke 968 had high content of soluble sugar and protein, PPO and SOD, and the content of DIMBOA compounds were low, indicating that the defense enzymes in silk of Jingke 968 may play an important role in silk resistance to ACB.
作者
刘燊
郭井菲
王勤英
何康来
王振营
LIU Shen;GUO Jing-Fei;WANG Qin-Ying;HE Kang-Lai;WANG Zhen-Ying(State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China;College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province,China)
出处
《环境昆虫学报》
CSCD
北大核心
2019年第1期25-32,共8页
Journal of Environmental Entomology
基金
国家重点研发计划(2018YFD0200602)
国家现代农业(玉米)产业技术体系(CARS-02)
