著者

平井 文男

出版者

日本作物学会

雑誌

日本作物學會紀事 (ISSN:00111848)

巻号頁・発行日

vol.20, no.3, pp.333-334, 1952-07-20

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In this treatise, the author has described the relations between the flowering order and the node-positions, the flowering time and the not-positions, and the flowering period and the number of flowers. These were all observed in individual varieties of soy-beans in Chichibu. (1) The flowers blooming first are found on the following node-positions: on the stem-on the first three nodes from below that have not grown the branches. on the branch-on the first node or the first two nodes immediately below the half way point of the branch. (2) As to the flowering order on the stem and the branches, two flowering waves-the first flowering wave and the later flowering wave-are recognized. These two waves progress centrifugally from the node-positions of the first, with an interval of about seven days. But this phenomenon does not appear in the daily flowering distribution curves of individuals. (3) In regard to the daily distribution of flowering, the maximum number is common on the 5 th or the 6 th day of the flowering period. (5) In regard to the hourly distribution of flowering, the most flowers bloom between 7.00 AM. and 9.00 AM. And the daily flowering order also progresses centrifugally on the stems and the branches.