The Effect of Temperature on the Low Temperature Vernalization of Barley

概要

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The difference in the vernalization effect in winter barley as affected by temperature was studied. In the green plants, there was a little difference in the vernalization effect at the temperature from 1℃ to 10℃ and there was a pronounced decrease in the effect at 14℃. In the plants of several days old, the vernalization effect was more pronounced than that in the plants sown just before the treatment or than that in the plants of many days old. The vernalization effect at the stage of sprouted seeds was the most pronounced at the temperature of 10℃ to 14℃ after sowing. There was a little difference in the trend of the vernalization effect between varieties of different winter habits. The plants of winter type had less vernalization effect than those of medium winter type. When the plants were treated by the various combinations of temperatures during daytime and during night, there was a trend toward increase in the vernalization effect with the fall in both of the temperatures to 6℃ or 10℃. There was, however, a little decrease in the vernalization effect at 4℃ or more low temperature. There was a little difference in the vernalization effect when the plants were treated by the same mean temperature obtained from the daytime and the night temperature except the days of very low temperature. The mean temperature representing the temperature in a day was discussed.
大阪府立大学の論文
1961-12-20