Phytopathology. 1999 Jul;89(7):598-602. doi: 10.1094/PHYTO.1999.89.7.598.
ABSTRACT Severity of Sclerotinia stem rot of soybean after treatment with lactofen (Cobra) and other herbicides was assessed in field experiments conducted in Michigan from 1995 to 1997. At sites where disease pressure was high, disease severity was reduced 40 to 60% compared with controls when lactofen was applied at the V3 (1995 and 1996) or R1 (1997) growth stages. Corresponding seed yields were unchanged or up to 20% greater when lactofen was applied at the R1 stage in 1997. Disease severity was not reduced by lactofen treatments in years and at sites where disease pressure was low to medium, and corresponding yields often were reduced by 10%. High levels of glyceollin accumulated in lactofen-injured leaves collected from field plots in 1996 and 1997. High glyceollin content in lactofen-treated leaves was associated with significant reductions in lesion size when leaves were challenge-inoculated with Sclerotinia sclerotiorum.
摘要 1995 年至 1997 年，在美国密歇根州进行的田间试验评估了氟磺胺草醚（Cobra）和其他除草剂处理后大豆菌核茎腐病的严重程度。在病害压力较高的地点，与对照相比，氟磺胺草醚在 V3（1995 年和 1996 年）或 R1（1997 年）生长阶段施药可将病害严重度降低 40%至 60%。在 1997 年的 R1 阶段施药时，相应的种子产量保持不变或增加了 20%。在病害压力较低至中等的年份和地点，氟磺胺草醚处理不会降低病害严重度，且相应的产量通常会降低 10%。1996 年和 1997 年从田间试验收集的受氟磺胺草醚伤害的叶片中积累了高水平的glyceollin。当用核盘菌对受氟磺胺草醚处理的叶片进行挑战接种时，叶片中高含量的glyceollin与病斑大小的显著减少有关。
