生活型及びハビタットとの関連からみた植物の耐凍性

概要

論文の詳細を見る
Freezing resistance of 45 species growing in Hokkaido University Forest, Tomakomai was assessed to study the ecological adaptation of plants to cold climates. Freezing resistance of most plant oragans increases from September to late-December and decreases from Feburuary to late-May. The aerial organs were hardier than the subterranean organs in most species examined. Phanerophytes were the hardiest and geophytes were the least hardy in the freezing resistance of dormant buds. In rhizomes and roots, hemicryptophytes growing in the road side were much hardier than those in the forest floor, and geophytes were the least hardy. These hardiness trends seem to correspond to the temperauture conditions surroundings the plant organs. On the other hand, little difference was found between hemicryptophytes in the road side and those in the forest floor, in the freezing resistance of dormant buds. These hardiness trends were still unchanged after hardening at -3℃ for 20 days from October to December. From these results, it seems that hardiness of the most plant organs is closely related to their life form and habitat.
日本生態学会の論文
1981-12-30