u((3 人khc-qood ec一 miycouhiil deisem 3-0h.人人 Close up of 3-0 American chestnut root system.Notice. the good ectomycorrhizal association. 果树毒业硕去生深醒O2 果树专业硕士生课程-yao2 Close-up of 3-0 American chestnut root system. Notice the good ectomycorrhizal association