Zhou Yan-Li, Wang Yan, Li Jin-Ying, Xue Yan-Jie
College of Horticulture, Jilin Agricultural University, Changchun 130118, China.
Ying Yong Sheng Tai Xue Bao. 2011 May;22(5):1368-72.
By the method of water culture, the root exudates of Cangshan garlic and Caijiapo garlic were collected to study their allelopathic effects on the seed germination and seedling growth of lettuce, and on the development of pathogens Fusarium oxysporum f. sp. cucumerinum and F. oxysporium f. sp. niveum. The root exudates of the two garlic cultivars promoted the lettuce seed germination and seedling growth at low concentrations (0.1 and 0.2 g x mL(-1)), but showed inhibitory effects at high concentrations (0.4 and 0.6 g x mL(-1)), with the inhibitory effects being stronger for the root exudates of Caijiapo garlic. The two garlic cultivars' root exudates also had inhibitory effects on the mycelia growth and spore germination of the pathogens, and the effects increased with increasing concentration of the exudates, being stronger for Caijiapo garlic than for Cangshan garlic. F. oxysporum f. sp. cucumerinum was more sensitive to the inhibitory effects of the root exudates of the two garlic cultivars, as compared to F. oxysporium f. sp. niveum.
采用水培法收集苍山蒜和蔡家坡蒜的根系分泌物，研究其对生菜种子萌发、幼苗生长以及尖孢镰刀菌黄瓜专化型（Fusarium oxysporum f. sp. cucumerinum）和尖孢镰刀菌西瓜专化型（F. oxysporium f. sp. niveum）病原菌生长发育的化感作用。两个大蒜品种的根系分泌物在低浓度（0.1和0.2 g·mL⁻¹）时促进生菜种子萌发和幼苗生长，但在高浓度（0.4和0.6 g·mL⁻¹）时表现出抑制作用，其中蔡家坡蒜根系分泌物的抑制作用更强。两个大蒜品种的根系分泌物对病原菌的菌丝生长和孢子萌发也有抑制作用，且随着分泌物浓度的增加，抑制作用增强，蔡家坡蒜的抑制作用比苍山蒜更强。相较于尖孢镰刀菌西瓜专化型，尖孢镰刀菌黄瓜专化型对两个大蒜品种根系分泌物的抑制作用更敏感。
