Fusarium infection decreases the yield of garlic (Allium sativum L.); however, knowledge about response to fungal attack is limited. Chitosan induces plant defense stress conditions. Here, we analyzed effects chitosan with low (Ch1, 39 kDa) and medium (Ch2, 135 molecular weight on in garlic. Ch1 Ch2 at concentrations 0.125–0.400 mg/mL suppressed growth proliferatum cultures vitro. Pretreatment ...