Physiological and Ecological Studies in Environmental Adaptation of Plants. I. Germination Behavior of Weed Seeds Collected from Different Altitudes.

概要

論文の詳細を見る
Weed seeds of 9 species were collected from several sites having different altitudes on the line of about 36°15'N, and the relation between the optimum temperature for seed germination and the altitude of the seed origin was investigated in each species. The seeds of the most species from the lowest site required from 25° to 30℃ for optimum germination. As their habitats got higher, in general, the optimum temperature had a tendency to transfer or extend into a lower range. A stratification preceding the germination test was effective in the germination of the seeds of some species, and, in some of these, a more intense stratification was required for their germination as their habitat got higher. The different behavior of seed germination to incubation temperature and the requirment for stratification seem to be adaptively caused by the temperature of the habitat, and the difference seems to be specific for each species. In most species used here, however, the seeds from 30m habitat on the Japan Sea side were different in their germination behavior from those on the Pacific Ocean side, inspite of the same altitude. This difference is considered to be caused by specific meteorological conditions on the Japan Sea side.
信州大学理学部の論文
1982-03-30