Abstract
First-year seedlings of Pinus densiflora SIEB. et ZUCC. were carried into two growth chambers warmed 3°C or no to outdoor temperature on Aug. 25, Sep. 10, Sep. 25, 2008 to investigate the effect of warming on the growth under the movement to northward. Test seedlings were gathered from southern and northern Ki Peninsula. As a result, the growth period of the terminal bud in both of first-year seedlings became the same among treatment. Main shoot length and number of needle leaves on second-year seedlings were decreased under warmer conditions. But the sterile-scale zone were increased. It was considered that the growth of P. densiflora should change under warmer conditions for 3°C and the movement to northward for several distance did not cancel the inhibiting to the growth.
