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林业科学 ›› 2010, Vol. 46 ›› Issue (12): 86-90.doi: 10.11707/j.1001-7488.20101214

• 论文 • 上一篇    下一篇

不同株系拟松材线虫对黄山松和黑松苗木的致病性

陈凤毛1,2, 史延梅1, 王姝颖1, 汤坚3, 孙翠云1, 叶建仁1,2   

  1. 1. 南京林业大学森林资源与环境学院 南京210037;2. 江苏省有害生物入侵预防与控制重点实验室 南京210037;3. 安徽省林业厅 合肥230001
  • 收稿日期:2010-07-24 修回日期:2010-10-09 出版日期:2010-12-25 发布日期:2010-12-25
  • 通讯作者: 叶建仁

Pathogenicity of Different Isolates of Bursaphelenchus mucronatus to Pinus taiwanensis and P. thunbergii Seedlings

Chen Fengmao1,2, Shi Yanmei1, Wang Shuying1, Tang Jian3, Sun Cuiyun1, Ye Jianren1,2   

  1. 1. College of Forest Resources and Environment, Nanjing Forestry University Nanjing 210037;2. Jiangsu Key Laboratory for Prevention and Management of Invasive Species Nanjing 210037;3. Anhui Forestry Department Hefei 230001
  • Received:2010-07-24 Revised:2010-10-09 Online:2010-12-25 Published:2010-12-25

摘要:

采用23个不同来源的拟松材线虫株系对2年生黄山松和2年生黑松进行人工接种试验。结果表明: 1)对黄山松苗具有致病作用的拟松材线虫有4个株系,分别为CFS4,SLD3,ZJ1和KOR1。其中接种ZJ1,SLD3 2个株系的黄山松苗的死亡率均为16.7%。2)对黑松具有致病作用的拟松材线虫有9个株系,分别是CFL1,SFS1,SFS4,SLD9,SDZ1,ANL5,ANL7,AHS9和HYC1。感病指数最高的ANL5达到83.3。其次是AL7,感病指数为54.2。发病率最高的拟松材线虫株系同样是ANL5,发病率达100%。死亡率最高的拟松材线虫系是ANL5和ANL7,达50%。3)根据拟松材线虫对2年生黑松苗的感病指数、发病率、死亡率等指标,将供试的23个拟松材线虫株系划分为3个致病等级: Ⅰ级(强致病性): ANL5和ANL7个株系; Ⅱ级(弱致病性): CKL1, SFS1, SFS4, SLD9, SDZ1, AHS9和HYC1 7个株系; Ⅲ级(无致病性): ANL1, JLH1, JLH10, JXY7, JYX31, CFL4, SLD3, YWF1, GBL3, ZJ1, HN1, TW1, JAP1和KOR1 14个株系。4)来自安徽的4个拟松材线虫株系,有3个株系对2年生黑松苗具有致病作用,其中2个株系(ANL5,ANL7)具有强致病作用; 来自四川的5个拟松材线虫株系,有4个株系(SFS1,SFS4,SLD9,SDZ1)对2年生黑松苗具有中等强度的致病作用,而另外1个株系(SLD3)对2年生的黄山松苗具有致病作用; 来自江苏的4个拟松材线虫株系(JLH1, JLH10, JXY7, JYX3)对2年生黄山松苗、2年生黑松苗均无致病性。

关键词: 拟松材线虫, 致病性, 黑松, 黄山松

Abstract:

Twenty-three strains of Bursaphelenchus mucronatus were used for inoculating two-year-old seedlings the following of Pinus taiwanensis and Pinus thunbergii to investigate their pathogenicity in this study. The main results were: 1)Four of Twenty-three B. mucronatus isolates had pathogenicity on the two-year-ole seedlings of P. taiwanensis, and they were SFS4, ZJ1, KOR1 and SLD3 respectively. 2) Nine of Twenty-three isolates of B. mucronatus had pathogenicity on the two-year-old seedlings of P. thunbergii, and they were CFL1, SFS1, SFS4, SLD9, SDZ1, ANL5, ANL7, AHS9 and HYC1 respectively. 3)According to disease index, morbidity rate and disease rate of B. mucronatus to two-year-old seedlings of P. thunbergii, twenty-three isolates of B. mucronatus were divided into three levels: Class Ⅰ (strong pathogenicity), Class Ⅱ ( weak pathogenicity) and Class Ⅲ (no pathogenicity). 4)Three of four populations from Anhui province had pathogenicity to two-year-old seedlings of P. thunbergii, wmong which two populations (ANL5 and ANL7) had strong pathogenicity; Four (SFS1,SFS4,SLD9,SDZ1) of five populations from Sichuan province had pathogenicity to two-year-old seedlings of P. thunbergii, and another population (SLD3) had pathogenicity to two-year-old seedlings of P. taiwanensis; All four populations from Jiangsu province had no pathogenicity to two-year-old seedlings of P. thunbergii and P. taiwanensis

Key words: Bursaphlenchus mucronatus, pathogenicity, Pinus taiwanensis, Pinus thunbergii

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