Studies on Photoperiodic Responses of Salvinia natans (III) : An Analytical Examination for the Formation o f Photoperiodic Stimulus

ArticleJournal of the Faculty of Liberal Arts and Science, Shinshu University. Part 2, Natural science 9: 21-26(1960)departmental bulletin pape

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

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.Article信州大学理学部紀要 16(2): 97-106(1982)departmental bulletin pape

Studies on Photoperiodic Responses of S alvinia natans (VI) : On the Effects of Nucleic Acid Precursors on S porocar p Formation

ArticleJournal of the Faculty of Liberal Arts and Science, Shinshu University. Part 2, Natural science 14: 43-48(1964)departmental bulletin pape

Studies on Photoperiodic Responses of Salvinia natans (V) : Effects of Some Inhibitory Treatments under the Influence of Certain Organic Acids

ArticleJournal of the Faculty of Liberal Arts and Science, Shinshu University. Part 2, Natural science 11: 43-48(1961)departmental bulletin pape

Studies on Photoperiodic Responses of Salvinia natans (VII) : On Ultraviolet Light-Absorbing Components, NAD and NADP, Extracted from Photoinduced Plants

ArticleJournal of the Faculty of Liberal Arts and Science, Shinshu University. Part 2, Natural science 15: 31-36(1965)departmental bulletin pape

Studies on Photo periodic Responses of Salvinia natans (I) : A Role of Carbon Dioxide in Photoperiodic Responses

ArticleJournal of the Faculty of Liberal Arts and Science, Shinshu University. Part 2, Natural science 8: 7-12(1958)departmental bulletin pape

Studies on Photoperiodic Responses of Salvinia natans (IX) : The Influence of α, α'- dipyridyl on Sporocarp Formation

Article信州大学理学部紀要 7(2): 155-157(1973)departmental bulletin pape

Sporocarp Initiation in Salvinia natans at Relative Low Temperature

ArticleJournal of the Faculty of Liberal Arts and Science, Shinshu University. Part 2, Natural science 13: 15-19(1963)departmental bulletin pape

Physiological and Ecological Studies in Environmental Adaptation of Plants : II. Freezing Resistance of Weed Seedlings Influenced by Difference in the Altitude of the Habitats of Parent Plants

Seeds of Pennisetum alopecuroides, Plantago asiatica, Setaria viridis, Setaria glauca, and Achyranthes Fauriei were collected from altitudinally different habitats, and, after germination on a constant temperature, freezing resistance in these seedlings was investigated. Freezing resistance, varying in degree according to each species, was intensified with the increasing elevation of the seed origin. In most species tested, freezing resistance was more intensitive on the seedlings derived from the Pacific Ocean side than Japan Sea side although the altitude of the seed origin was the same (about 30m) in both cases. The freezing resistance of P. alopecuroides seedlings was intensified by decreasing the incubation temperature for seed germination, but the difference in freezing resistance according to the altitude of the seed origin was never removed. The degree of freezing resistance in seedlings seems to vary according to the temperature level at the germination period, although the degree of resistance is determined by the environmental temperature of the original habitat. The varying level of freezing resistance seems to be a factor in permitting species-distribution into a new habitat, especially a higher or colder one.Article信州大学理学部紀要 18(1): 45-51(1983)departmental bulletin pape

Effect of CO on the Change in Dehydrogenase Activity with Floral Induction in Pharbitis nil

Article信州大学理学部紀要 7(2): 151-153(1973)departmental bulletin pape