On Ultraviolet Absorption of a Component from Leaves of the Photo periodically Induced Plant

ArticleJournal of the Faculty of Liberal Arts and Science, Shinshu University. Part 2, Natural science 10: 7-13(1961)departmental bulletin pape

Photosynthesis in Polygonum reynoutria L. ssp. asiatica Grown at Different Altitudes

A relation between environmental conditions and photosynthetic ability was investigated with Polygonum reynoutria L. ssp. asiatica growing in various conditions. The optimum and the maximum temperatures for photosynthesis in the plants under field conditions varied seasonally with the variation of air-temperature. Both temperatures were located on much lower level with the plants grown at high elevation. In their seedlings cultured under an artificial controlled condition, the optimum temperature differed to every seed-source which was different in environmental temperature. The optimum temperature had a wide range in the plants grown natively at low elevation, and had a narrow range in those grown natively at high elevation. The width of the range was narrowed by transplantation into high elevation from low one, and was similar to that of the range in the native plants in the habitat into which the plants were transplanted. The width, however, was never changed by transplantation into low elevation from high one. The optimum and the maximum temperatures for photosynthesis may be genotypically decided, although both temperatures showed a variance with the seasonal variation of air-temperature. Such plasticity on both temperatures for photosynthesis seems to be larger in the plants grown natively at low elevation than ones grown natively at high elevation.Article信州大学理学部紀要 10(1): 27-34(1975)departmental bulletin pape

Net Production in Several Mature Plants Grown at Different Altitudes

The net productions of Polygonum reynoutria L. ssp. asiatica, Solidago virgaaurea L. ssp. asiatica, and Prunella vulgaris L. ssp. asiatica were measured by the leaf-half method modified monthly in several native habitats of different altitude. With P. reynoutria, the net productivity was decreased from late July to late September, and also was decreased in higher habitats. The productivities of S. virga-aurea and P. vulgaris, however, were increased from late July to late August, and from about 600m to about 1500m elevation in the same season, and then decreased in both cases. The temperature that showed the maximum productivity was lower in S. virga-aurea than in P. vulgaris. It was suggested that the plants distribution of these 3 species may be related to the difference in their productivities.Article信州大学理学部紀要 10(1): 35-39(1975)departmental bulletin pape

Tailored coupled cluster singles and doubles method applied to calculations on molecular structure and harmonic vibrational frequencies of ozone

To assess the separation of dynamic and nondynamic correlations and orbital choice, we calculate the molecular structure and harmonic vibrational frequencies of ozone with the recently developed tailored coupled cluster singles and doubles method (TCCSD). We employ the Hartree-Fock and complete active space (CAS) self-consistent field (SCF) orbitals to perform TCCSD calculations. When using the Hartree-Fock orbitals, it is difficult to reproduce the experimental vibrational frequency of the asymmetric stretching mode. On the other hand, the TCCSD based on the CASSCF orbitals in a correlation consistent polarized valence triple zeta basis yields excellent results with the two symmetric vibrations differing from the experimental harmonic values by 2 cm^(−1) and the asymmetric vibration differing by 9 cm^(−1)