| Budget Amount *help |
¥2,000,000 (Direct Cost : ¥2,000,000)
Fiscal Year 1992 : ¥300,000 (Direct Cost : ¥300,000)
Fiscal Year 1991 : ¥400,000 (Direct Cost : ¥400,000)
Fiscal Year 1990 : ¥1,300,000 (Direct Cost : ¥1,300,000)
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| Research Abstract |
The methods of quantitative experiments obtained from this research are as follows: 1) Experiments regarding to the relation between intensity of illumination and photosynthetic rate; (1) Duckweeds are cultivated on the conditions to irradiating with lights of 2,000, 4,000,....and 10,000 Lux. After several days, the increased weight(wet weight) of the duckweeds cultivated on each intensity of illumination are weighted respectively. (2) A leaf put into a closed vessel are irradiated with different intensities of light, and CO_2 quantity absorbed by the leaf for 30 minutes on each condition is measured using a gas detector. 2) Experiments regarding to the relation between temperature and respiration rate; (1) Medaka is put into water kept at temperatures of 5, 10, .... and 30ﾟC, and the number of respiratory movement of the medaka's operculum per minute is counted at each temperature. (2) Germinating seeds put into a closed vessel are kept at temperatures of 5, 10, .... and 30ﾟC, and O_2 quantity absorbed by the germinating seeds for five minutes is measured at each temperature. 3) Measurement of the amount of the water lost by transpiration; Water quantity transpirated from leaves of plant for 30 minutes is measured using an electronic balance. Subsequently the area of each leaf is measured using a method converting the weight of the pieces of the thick paper cut as large as each leaf into the areas. Then water quantity lost by the leaf per 100 cm^2, per 60 minutes is measured.
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