On Triploid Thea

抄録

1. Thea sinensis L. var. macrophylla SIEB. is a triploid plant, with fifteen trivalent chromosomes at the meiosis of the P. M. C.
2. The variety is probably an autotriploid plant derived from its species, Thea sinensis.
3. The high sterility of the variety is due to the irregular meiosis.
4. The giant characters of the variety are presented by its autotriploidy.
December, 1931.
Biological Institute,
Furitsu-kôtôgakkô,
Kôjimachi, Tôkyô.