How to improve DNA yield from plant samples?

A) 多数情况下DNA含量跟植物及其组织本身有关; B) 细胞未充分裂解; C) 可适当延长裂解时间，增加混合次数; D) 减少洗脱液的体积。

A) DNA yield dependent on material type; B) Cells were not completely broken down; C) Increase lysis time, more mixing; D) Using less elution buffer.