Explanation of the Figure on the cover
Diagram of showing the populations of rye with accessory chromosomes in Korea. Numerals indicate the locality Nos. Average number of the B-chromosomes per plant is represented by the black area in the circle, for instance:
(Small circle represents the population in which 11-30 plants were observed, and large circle represents the population in which 31-51 plants were observed.)
-Woong-Jik LEE and Byung-Re MIN, S. page 27-