抄録
The induced autotetraploid plants (2n = 24) of Common California Poppy (Eschscholtzia califorleica CHAM. ), which were obtained by treatment with colchicine sc, 1ution, showed an extremely lowered seed fertility in 1956, only producing a small qu, antity of small crumpled seeds, possibly due to the unfavorable higher temperatured envi.ronment of late spring at Utstu'nomiya. After sowing them only one tiny seedling grew up and was soon ascertained tb be haploid in fall of that year. The habit was typically dwarf. Size of its organs, stems, Ieaves and flowers, was all about a half of normal diploids.
