カラマツにおける自殖稔性の推定

概要

論文の詳細を見る
Female strobili were pollinated by pollen shed from male strobili isolated in the same isolation bag. The percentage of pollinated ovules in each cone did not increase in proportion to the number of male strobili in the bag, and no regular relationship with the number of male strobili isolated could be found. The number of pollinated seeds in mature cones was estimated by the following formula : (the number of total seeds)×{(the number of pollinated ovules)/(the number of total ovules)}. Full seeds as percent of pollinated seeds in each clone ranged from 0.16% to 60%, with 18% in an average of 11 clones. Seeds contained in Larix mature cones usually consist of full seeds and empty seeds. Empty seeds originate from the abortion of gametophytes caused by non-pollination or of proembryos caused by embryonic inviability after selfing, and they can not be distinguished from full seeds in L.leptolepis. Therefore, self-fertility should be expressed as the number of full seeds per pollinated seeds rather than the number of full seeds per total seeds, when the self-fertility is compared between clones with different pollination levels.
日本森林学会の論文
1979-02-25