センブリの試作栽培(第8報) : 種子の発芽におよぼす温度の影響について

概要

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A survey was done on the germination of Swertia japonica. The seeds obtained from a wild strain were cultivated for four generations by intraspecific crossing, and then only the large seeds were selected. The seeds were dried, stored at low temperature and sowed every five days, 16 times froms March 1 to May 21, 1984. The results were as follows; 1) Each germination rate of the seeds sowed in March was about 80%. The optimum temperature for germination was 13.4 ±2.2℃. 2) Altering temperature was effective for germination. Higher germination rates were obtained with a minimum temperature of 5-10℃ and an average temperature of 13℃ for ten days. 3) A correlation between germination rates and temperature was observed. The daily minimum temperature was accumlated for about 18 days after sowing, and high germination rates were found when the accumlated temperature was over 40℃. 4) The dry seeds treate with low temperature had, even without wet treatment, a germination of about 80% under natural conditions when sowed at the right time.
日本生薬学会の論文
1987-03-20