Figure 1.

Seedling germination and growth. After sterilization maize seeds are placed as a row in a sheet of wet germination paper (A). The germination paper is rolled over to form a cylinder and then covered with aluminum foil. A rubber band is used to hold the paper together (B). After 6 days, seedlings show well developed primary and seminal roots. Root tips can be collected for cell-wall digestion at this point (C).