Selectivity of the Seed Coat of Alfalfa during Germination under Osmotic Tension 1

Each block of 100 circles is treated as a unit by marking off the inside of a manila folder in 100 rectangles of 3% by 4 centimeters each. When the manila folder is opened and laid flat, the lower left hand rectangle represents circle zero and numbering is continued across to the right to number 9, in the same manner as outlined above. The manila folder becomes a visual representation of 100 plots in their relative positions in the field. The pedigree of the plants in each circle can be written in the corresponding rectangle.