It appears so, and in no small amount..
https://www.ncbi.nlm.nih.gov/pubmed/22296876
During the period of supplementation the testosterone level in the experimental groups rose by 40, 87 and 126 percent, respectively. The higher the Arctium lappa extract dosing, the higher the testosterone level.
Rat study but intriguing nonetheless. Burdock root is usually sold for acne problems/oily skin, and it's in just about any pharmacy you walk into. Dunno, this one has me perplexed. In any case, the required daily dose is WAY up there/doesn't appear practical.
If you weigh 176lbs, you'd need 3.9 - 15.6 g per day. That's a lot, considering most caps are just 425mg...