河南农业科学 ›› 2019, Vol. 48 ›› Issue (11): 112-119.DOI: 10.15933/j.cnki.1004-3268.2019.11.016

• 植物保护 • 上一篇    下一篇

不同鲜食玉米品种的抗螟性比较

陈强,张金龙,雷帅,李强,张晓明,陈国华   

  1. (云南农业大学植物保护学院/云南生物资源保护与利用国家重点实验室,云南 昆明 650201)
  • 收稿日期:2019-06-15 出版日期:2019-11-15 发布日期:2019-11-15
  • 通讯作者: 陈国华(1964-),女,云南昆明人,教授,博士,主要从事害虫综合治理研究。E-mail:chenghkm@126.com 张晓明(1984-),男,云南保山人,副教授,博士,主要从事入侵生物学与生态学研究。 E-mail:zxmalex@126.com
  • 作者简介:陈强(1994-),男,山东泰安人,在读硕士研究生,研究方向:农业昆虫与害虫防治。E-mail:794719673@qq.com张金龙为同等贡献作者
  • 基金资助:
    国家自然科学基金项目(31360436);云南省现代农业玉米产业技术体系建设资助项目(2018KJTX002)

 Comparison of Borer Resistance of Different Fresh-eating Corn Varieties

 CHEN Qiang,ZHANG Jinlong,LEI Shuai,LI Qiang,ZHANG Xiaoming,CHEN Guohua   

  1.  (College of Plant Protection,Yunnan Agricultural University/National Key Laboratory for Conservation and Utilization of Biological Resources in Yunnan,Kunming 650201,China)
  • Received:2019-06-15 Published:2019-11-15 Online:2019-11-15

摘要: 为有效实施玉米害虫综合治理,对玉米品种之间的抗螟性差异进行比较,筛选具有抗螟性特征的玉米品种。在自然感虫状态下采用平行跳跃法分别记录玉米螟在玉米苗期、穗期、花粒期的危害状况,对17个鲜食玉米品种进行抗螟性鉴定,并对采用花叶指数测定玉米苗期抗螟性的可行性进行分析。结果表明,不同鲜食玉米品种百株受害率的动态变化规律基本一致,均在收获时受害株率达到最高峰。苗期抗螟性表现为高抗的玉米品种有4个:甜嘉糯1号、云糯4号、天紫23号、黑糯1号;穗期抗螟性表现为高抗的玉米品种有2个:甜嘉糯1号、天紫23号。花粒期云糯4号百株蛀孔数最低,为79.0个,夏王超甜百株蛀孔数最高,为243.3个。花叶指数与平均食叶级别极显著相关,花叶指数可作为鉴定玉米抗螟性的重要指标。甜嘉糯1号和天紫23号的抗螟性较好,可在螟虫发生危害严重的区域种植。

关键词: 鲜食玉米, 品种, 亚洲玉米螟, 花叶指数, 抗螟性

Abstract:  In order to effectively implement integrated control of corn pests,the differences of resistance to borer among corn varieties were compared to screen borer-resistant corn varieties.Parallel jump method was used to record the damage of corn borer at seedling stage,ear stage and flower-grain stage of corn un der natural susceptibility.17 varieties of fresh-eating corn were identified for borer resistance,and the fea sibility of mosaic index to determine borer resistance of corn at seedling stage was analyzed.The results showed that the dynamic changes of damaged ratio per 100 plants of different fresh-eating corn varieties were basically the same,and the damaged ratio reached the peak at harvest time.At seedling stage,there were four varieties(Tianjianuo 1,Yunnuo 4,Tianzi 23 and Heinuo 1) with high resistance to borers.At ear stage,there were two varieties(Tianjianuo 1 and Tianzi 23) with high resistance to borers.At flower grain stage,the lowest number of borers per 100 plants was inYunnuo4( 79.0) ,and the highest borer number of 100 plants was in Xiawangchaotian(243.3) .The correlation between mosaic index and average leaf-eating grade was extremely significant.Mosaic index could be used as an important index to identify the resistance of corn to borers.Tianjianuo 1 and Tianzi 23 had better resistance to borers and could be planted in areas where borers seriously occurred.

Key words: Fresh-eating corn, Varieties, Asian corn borer, Mosaic index, Borer resistance

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