Effect of temperature condition from summer to autumn on the blooming of <I>Osmanthus fragrans</I> Lour. var. <I>aurantiacus</I> Makino

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  • 夏季から秋季にかけての気温がキンモクセイの開花に及ぼす影響
  • カキ カラ シュウキ ニ カケテ ノ キオン ガ キンモクセイ ノ カイカ ニ オヨボス エイキョウ
  • Effect of temperature condition from summer to autumn on the blooming of Osmanthus fragrans Lour. var. aurantiacus Makino

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In this research, four years test plant of Osmanthus fragrans Lour. var. aurantiacus Aurantiacus Makino were kept in the growth chamber warmed 3°C to outdoor temperature from the summer to the autumn in order to investigate the effect of the warming in recent years. As a result, the start of blooming were delayed, and the blooming period were prolonged under the warming treatment. The blooming days near the last of blooming period became shorter. And, two or more times of peaks appeared under the warming treatment in the blooming period. There were four patterns in this blooming phenomenon: 1) the unevenness of blooming period by different of individuals under the same treatment, 2) the unevenness of blooming period by different of flower bud in the same shoot, 3) blooming from the multiple flower bud on the same part, 4) the one by which those phenomena were compounded.

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