採種園内の黄金スギの自然自殖率と種子の形質

概要

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The relationship between the natural selfing rates and the several characteristics of seed were studied in six wogon-sugi trees in a seed orchard. The range of natural selfing rates was 3.2 to 52.1% with 19.4% as the mean value. The average values for the upper, middle, and lower parts of the crowns were 12.1,21.7,and 24.7%, respectively, for the natural selfing rates, and 17.3,14.9,and 8.4%, respectively, for the germination rates. The mean number of seed germinating per cone for these parts of the crowns was 12.3,9.7,and 5.9%, respectively. From these results, when the natural selfing rate of a wogon-sugi crown as a whole was controlled at 12.1% and the germination rate was 17.3%, it was estimated that the increasable number of germinative seed is 15.5,106.1,and 11.5% for the middle, lower, and entire tree crown, respectively, compared with the actual rates.
一般社団法人日本森林学会の論文
1984-12-25