Photosynthetic Nature of Some Aquatic Plants in Relation to Temperature
1970 年 83 巻 979 号 p. 10-12
詳細
1970 年 83 巻 979 号 p. 10-12
The apparent photosynthesis-temperature relations of some aquatic plants were examined with the differential gas-volumeter at the light intensity of 20klux.
The optimum temperature for photosynthesis was found at 20°in Nitella sp. and Fontinalis hypnoides, and at 30°in Ceratophyllum demersum, Potamogeton crispus and Cabomba caroliniana. The maximum apparent photosynthetic rates of these plants were 3.62, 4.75, 4.43, 4.50 and 3.86μl O2/dry mg/hr, respectively. Seasonal changes in the relationship between the apparent photosynthesis and temperature were examined for C. caroliniana. The maximum photosynthesis was obtained at the same temperature (about 30°) through three seasons; May, August and December, while a noticeable variation of the photosynthetic rate was observed among these seasons.
