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- W2034181523 abstract "Some experiments were carried out in the autumn of I922 and the spring of I923 to determine whether the time of flowering of winter wheat and winter rye bore any relation to exposure to light. The experiments were carried out in a greenhouse, the natural period of daylight being supplemented by electric light at night. It was found that the pots of winter wheat subjected to electrical illumination headed out 27 days earlier than those exposed to daylight only, while winter rye headed out 45 days earlier as the result of the extra illumination. In order to determine whether a similar result could be secured under daylight only, by sowing the seed at different dates, the experiments outlined below were undertaken. With the exception of those of Wanser (6), very few experiments appear to have been made on the subject, although certain investigations made by other workers on wheat and other plants have some bearing on it. Johnston (3) planted seeds of buckwheat in a greenhouse at intervals of a fortnight throughout the entire year, his observations on each set of plants terminating when they were 4 weeks old. He found that the maximum number of flowers was produced by the plants examined between April 24 and May 22, and again between August 28 and September 25. In January and February, and again in July, the number of flowers produced was at a minimum. The greatest dry weight was attained by the plants examined on May 22 and the least dry weight by those examined on January 29, the figures in the latter case being about one twelfth those in the former. Jardine (I) states that" @default.
- W2034181523 created "2016-06-24" @default.
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- W2034181523 date "1924-10-01" @default.
- W2034181523 modified "2023-10-04" @default.
- W2034181523 title "DOES LIGHT DETERMINE THE DATE OF HEADING OUT IN WINTER WHEAT AND WINTER RYE?" @default.
- W2034181523 cites W2000531811 @default.
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- W2034181523 doi "https://doi.org/10.1002/j.1537-2197.1924.tb05797.x" @default.
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