大根の生育中における根形の変化について
1957 年 25 巻 4 号 p. 227-231
詳細
1957 年 25 巻 4 号 p. 227-231
The root of the Japanese radish is much lar-ger than that of the radish. Consequently the root development requires a much longer period than that of the radish. The growth period is usually about 100 days in autumn. The present paper deals with the change of root-shape during development. Results obtained permit us to make a following conclusion: In early stage there is practically no difference in root-shape between round- and long-shaped varieties. The root may undergo sudden growth in thickness from 41 to 55 days after sowing, and forms almost proper shape, although its size is yet small. The typical root-shape and size are gradually formed with further development.
