日長効果を利用しての作物生育過程の生理化学的解析(第1報) : 燕麦の形態的観察

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The authors have elucidated the biochemical characteristics of each stage of the life cycle of oat plants which were treated under different photoperiodic conditions. As the 1 st report of the series the result of observations of morphological changes will be discussed 1) During the vegetative period, the speed of leaf sprouting was caused to become lower in accord with duration of vegetative period under short day treatment, and when the plant was put under long day treatment from under short day treatment, the speed of leaf sprouting became quicker in accord with passage of time under short day treatment. 2) Number of leaves on the main stem which sprouted during reproductive phase was six, in spite of the length of vegetative period, but number of leaves on the main stem sprouted during vegetative phase increased in response to the length of vegetative period. 3) The internodes which belonged to the six leaves during reproductive phase, mainly elongated during reproductive poriod. These facts suggest that each different sort of leaves of two phases has its own characteristic physiological function relative to growth of oat plant. 4) a) Number of tillerings increased even in reproductive phase when preceding vegetative period was shorter than S_4-teatment . b) The ratio , weight of ears to that of leaves which sprouted during repoductive phase, was smaller as vegetative period was shorter. These above facts show that there occurred an overlapping of the reproductive phase on the vegetative phase. 5) Both of the weight of ears and percentage of weight of ears to that of whole plant; were maximum in two plants of which one was grown under the natural photoperiodic conditions and other was put under long day treatment from the six leaf stage Vegatative and reproductive phases in these plants did not overlap or separate from each other.
社団法人日本土壌肥料学会の論文
1955-10-05

日長効果を利用しての作物生育過程の生理化学的解析(第1報) : 燕麦の形態的観察

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