The Effects of the Temperature and other Several Conditions of the Seed of nine Species in <I>Fagaceae</I> for Planting on Germination

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  • 緑化用ブナ科植物9種の種子発芽に与える温度等諸条件の影響
  • リョッカヨウ ブナカ ショクブツ 9シュ ノ シュシ ハツガ ニ アタエル オ

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Abstract

In order to clarify the effects of storage term and post-storage temperature on germination of the seeds of nine species in Fagaceae, germination speed and germination rate were examined using the seeds stored under a wet (75%RH) and cold (4°C) condition. Experimental conditions were as follows.(1) Post-storage temperature: 9°C, 16°C, 23°, 30°C and 35°C.(2) Storage term: long (127-175 days) and short (15-70 days).<BR>Germination speed and germination rate of Quercus myrsinaefolia and Q. acuta were higher in long-term storage. Germination speed of Q. glauca was higher in long-term storage. On the other hand, germination speed and germination rate of Q. serrata and Castanopsis cuspidata var. sieboldii were lower in long-term storage.<BR>Germination speed and germination rate of Q. salisina were the highest at 23°C, and those of Q. gilva were the highest at 16°C. Germination rate of Q. acutissima under temperatures between 9 and 30°C were over 80%. Germination speed and germination rate of Pasania edulis were the highest at 9°C and 30°C, respectively. Each species of Fagaceae had their own germination characteristics affected by temperature. And geographical difference of germination characteristics within a species were not clear.

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