ブナ科植物の生態学的研究 : I.アベマキの種子期における生理生態学的研究

概要

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Some characteristics of the seed-phase of Quercus variabilis including the seed fall-and seedlingstage were studied physiologically and ecologically. The germination-rate and the rate of rootelongation of Q. variabilis were determined at various temperatures under the wet conditions of a Petri dish. Under wet conditions the germination reached 100% at 24.5℃ much faster than the other temperatures. Dry conditions disturbed germination-rate and delayed its onset. The growthrate of the roots was maximum at 25℃, and the time necessary for unfolding of the shoot after germination varied with temperature. From these experimental results and by making use of meteorological records for the Nagoya district, it was expected that, if the supply of water was sufficient, the germination-rate of seeds of Q. variabllis during the mast-year would be high in Nagoya and its vicinity, and that the root would elongate until the next spring without unfolding of shoot. The results of field observations confirmed those expectations with the logical exception of a little delay in seed-germination in the dry area. Discussions were directed to the possibility of elucidating the distribution of Q. variabilis by these characteristic features of its seed-phase.
日本生態学会の論文
1977-03-31