EFFECTS OF AIR TEMPERATURE AND LIGHT ON GRAIN FILLING OF AN INDICA AND A JAPONICA RICE (Oryza sativa L.) UNDER CONTROLLED ENVIRONMENTAL CONDITIONS
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概要
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The effects of air temperature and light on the grain filling of an indica (IR20) and a japonica rice (Fujisaka 5) was studied in artificially lighted cabinets. Within the daily mean temperature range of 16° to 28℃, the higher the temperature, the faster the grains filled and matured. At 28℃, the upper grains of IR20 rice took 13 days to reach the maximum weight, whereas those of Fujisaka 5 took 18 days. The optimum daily mean temperature range to achieve maximum weight per grain was 19° to 25℃ for IR20 and 16° to 22℃ for Fujisaka 5. Apparently, IR20 rice is better adapted to higher temperatures during the ripening period than is Fujisaka 5 rice. More chalky grains occurred when the temperature was above or below the optimum range. Both day and night temperatures affected grain weight and grain quality. The daily mean temperature was found to be the most meaningful expression for describing the effect of temperature on grain filling. Low light intensity appeared to cause a slight delay in the grain filling of the whole panicle and a reduction in the percentage of filled grains on the lower branches. A combination of high light intensity and low temperature gave the best ripening grade (grain weight × percent filled grains).
- 社団法人日本土壌肥料学会の論文
著者
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Yoshida Shouichi
The International Rice Research Institute
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HARA Tetsuo
The International Rice Research Institute
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Hara Tetsuo
The International Rice Research Institute:(present Address)college Of Agriculture Gifu University
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Yoshida Shouichi
The Internationa Rice Research Institute
関連論文
- LEAF CUTICULAR RESISTANCE OF RICE VARIETIES
- PARTITIONING OF PHOTOSYNTHATES BETWEEN GROWING PANICLE AND VEGETATIVE PARTS BEFORE ANTHESIS
- A SIMPLE EVAPOTRANSPIRATION MODEL OF A PADDY FIELD IN TROPICAL ASIA
- EFFECTS OF TEMPERATURE ON GROWTH OF THE RICE PLANT (Oryza sativa L.) IN A CONTROLLED ENVIRONMENT
- EFFECTS OF AIR TEMPERATURE AND LIGHT ON GRAIN FILLING OF AN INDICA AND A JAPONICA RICE (Oryza sativa L.) UNDER CONTROLLED ENVIRONMENTAL CONDITIONS
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- PHOTOSYNTHESIS OF THE RICE PLANT UNDER WATER STRESS
- ZINC DEFICIENCY OF THE RICE PLANT ON CALCAREOUS AND NEUTRAL SOILS IN THE PHILIPPINES
- EFFECTS OF MINERAL NUTRITION ON TILLERING OF RICE
- WATER UPTAKE BY DRYLAND RICE ROOT SYSTEM DURING SOIL DRYING CYCLE
- EFFECTS OF NITROGEN, PHOSPHORUS, AND POTASSIUM ON PHOTOPHOSPHORYLATION IN RICE IN RELATION TO THE PHOTOSYNTHETIC RATE OF SINGLE LEAVES
- AN ASSESSMENT OF THE EFFECTS OF SILICATE APPLICATION ON RICE BY A SIMULATION METHOD
- EFFECTS OF DIFFERENT METHODS OF ZINC APPLICATION ON GROWTH AND YIELDS OF RICE IN A CALCAREOUS SOIL, WEST PAKISTAN
- PARTIAL REPLACEMENT OF POTASSIUM BY SODIUM IN THE RICE PLANT UNDER WEAKLY SALINE CONDITIONS
- EFFECTS OF CO_2 ENRICHMENT AT DIFFERENT STAGES OF PANICLE DEVELOPMENT ON YIELD COMPONENTS AND YIELD OF RICE (Oryza sativa L.)