摘要
近年来中国小麦壳针孢叶枯病发生日益严重,为了寻找和发现该病的新抗性品种材料,通过人工接种法和病情分级法对44个小麦品种(系)及4个常规品种的抗性水平进行了比较和评价。结果表明,48个小麦品种(系)中对壳针孢叶枯病免疫的品种有8个,占供试品种的16.67%;表现抗病的品种有23个,占供试品种的47.92%,其中高抗品种19个,中抗品种4个;表现感病的品种有17个,占供试品种的35.41%,其中,中感品种8个,高感品种9个。病情指数和病叶率结果显著正相关(r=0.9817),表明二者均可用作品种的病情评价指标。研究得出,所测试品种中多数(64.58%)对壳针孢叶枯病表现抗性,这些抗性品种(系)为未来小麦壳针孢叶枯病的抗病育种提供了良好抗性材料,也为小麦生产品种的选用提供理论依据。
The Septoria tntiei leaf blotch of wheat has been becoming serious during the past few years. In order to find out some resistant materials, the resistance level of 44 wheat lines and 4 common varieties was evaluated by artificial inoculation with S. tritiei conidial suspension and by disease classification. The results showed that 8 varieties （lines） were immune accounting for 16.67% of the total materials, 23 varieties （lines） were resistant （47.92%）, among which 19 varieties （lines） showed high-resistance and 4 varieties （lines） moderate resistance. Seventeen varieties （lines） were susceptible, accounting for 35.41% of the total materials, among which 8 varieties （lines） were moderate-susceptible and 9 wheat varieties （lines） high-susceptible. Disease index had a significant positive correlation to rate of diseased leaves （r=0.9817）, indicating that both factors can be used for the disease severity evaluation of varieties. It is concluded that most of these varieties were resistant to S. tritiei. These immune and highly resistant varieties can be good materials for the future plant breeding to wheat leaf blotch, and also be references for the selection of variety in wheat production.
出处
《中国农学通报》
CSCD
2013年第27期187-191,共5页
Chinese Agricultural Science Bulletin
基金
浙江省自然科学基金"小麦叶枯病致病相关基因的分离与鉴定"(Y3110316)
教育部留学回国人员启动基金"小麦叶枯病菌致病相关基因克隆及其表达分析"(2012-43)
关键词
小麦品种(系)
壳针孢叶枯病
抗性鉴定
评价
wheat varieties （lines）
Septozia tffticileaf blotch of wheat
resistance identification
evaluation
