以下为句子列表：
英文: But the photoperiod sensitivity of the tropical and subtropical maize blocked this process.
中文: 针对热带亚热带玉米种质这些特点，诱变可以发挥重要的作用。
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英文: Experiments were set on sterilized petridishes with a photoperiod of 24 h at room temperature of 27-30℃.
中文: 实验在27-30℃的室温和24小时的光照条件下进行。
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英文: Florigen (flowering hormone) A hypothetical plant hormone that has been postulated to account for the transfer of the photoperiod stimulus from the leaves to the apex where flowering is induced.
中文: 成花激素：一种假定的植物激素，该假设用来解释来自于叶中，在茎端诱导成花的光周期刺激物质的转运。
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