胡麻の品種に関する研究 : (7)胡麻の感温, 感光性について
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In the previous report the author classified the sesame varieties into five groups according to their light sensitivity, but in this paper the author dealt with the relation between each group of different light and temperature sensitivity. The materials used in this experiment were 31 varieties introduced from nine countries including Japan. They were sown on the 26th of June, 1957. Then treatment was exercised from July 10th and continued through August 8th, and after treatment they were allowed to grow naturally. The treatment was as follows : Check plot : (N) Cultivation under natural conditions. Short-day treatment : (S) Exposure of eight hours per day. (9A.M.〜5P.M.) Long-day treatment : (L) In the day time, by natural exposure, at night illuminated allnight with two bulbs of 100w from the distance of 1.5m. Heat plot : (H) Cultivation in the Viyni house. (N), (S), (L) and (H) are days required from seeding to flowering. The days from seeding to flowering of each varieties were as follows in the relation to light sensitivity. (1) A group being highly sensitive to both Short-day and Long-day conditions : temperature sensitivity was high and showed the same tendency as the varieties treated under the Long-day conditions (African, Indonesian varieties and a Indian variety). (2) A group being more sensitive to Short-day, while low to Long-day conditions : temperature sensitivity was not recognized or seen (a part of Israel and Japanese varieties). (3) A group being less sensitive to Short-day but more to Long-day conditions : temperature sensitivity was low or flowering promoted under high temperature (Japanese, Korean and a part of Indian varieties). (4) A group being of low sensitive to both Short-day and Long-day conditions : the varieties flowering promoted under high temperature, in other varieties temperature sensitivity was not recognized or temperature sensitivity was low (Japanese, Korean and some of American varieties). (5) The variety in which flowering was promoted under Long-day conditions : flowering promoted under high temperature. By the results of the experiment, both temperature and light sensitivity differed according as the place of source difference in latitude. It was recognized that the higher the latitude of the place of source, the lower the temperature sensitivity becomes. With regard to the temperature sensitivity, which has a close relationship to light sensitivity;; both temperature and light sensitivity differed accordingly as the source of varieties differed according latitude. It was recognized that the higher the latitude of the place of source the lower the temperature sensitivity.
- 日本生態学会の論文
- 1959-04-01
著者
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