不同类型烟草新品种（系）对南方根结线虫的抗性鉴定

Characterization of Meloidogyne incognita resistance in new tobacco varieties (lines)

摘要: 为明确烟草新品种（系）对南方根结线虫的抗性，在南方根结线虫病圃中对烤烟和白肋烟共42个新品种（系）进行了南方根结线虫的抗性鉴定。结果表明，42个烟草新品种（系）中有7个抗病品种（系），分别为烤烟LJ986、LY30604、贵烟6号、YN116、贵烟2号、CF226和白肋烟27018，占鉴定材料总数的16.67%；有26个中抗品种（系），占鉴定材料总数的61.90%；有8个中感品种（系），占19.05%；1个感病品种（系），占2.38%。其中，中抗品种（系）所占比例最高，无高抗、高感品种（系）。

Abstract: To investigate the Meloidogyne incognita resistance in new tobacco varieties (lines), 42 new tobacco varieties (lines) including flue-cured and burley tobacco were evaluated in disease nursery. The results showed that in the 42 varieties (lines), there were 7 resistant varieties (lines), namely flue-cured tobacco LJ986, LY30604, Guiyan 6, YN116, Guiyan 2, CF226 and burley tobacco 27018; which accounted for 16.67%. There were 26 medium resistant varieties (lines), 8 medium susceptible varieties (lines) and 1 susceptible variety (line), which accounted for 61.90%, 19.05% and 2.38%, respectively. The proportion of medium resistant varieties (lines) was the highest, and there were no high resistant and high susceptible varieties (lines).