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Nitrogen Absorption Pattern of Rice Plant in the Tropics
Growth duration Nitrogen uptake Oryza sativa L Spacing
2009/8/6
The amount of N in plants increased exponentially at the early growth stage (y=abx) and linearly at the middle and late growth stages (y=a+bx). The crossing point of the two equations coincided with t...
Growth Regulating Action of Isoprothiolane in Plants:III. The effect of isoprothiolane on the ripening of rice plant under the low temperature condition
Grain weight Heading IPT Low temperature Rice
2009/8/6
Investigations were made on the effect of isoprothiolane (diisopropyl-1, 3-dithiolan-2-ylidene malonate, IPT) on the ripening of rice (Oryza sativa L.) under the low temperature conditions. The simil...
Combined Effect of Hill Arrangement, Wind Direction and Wind Speed on Bending Angles of Culms and Lodging Levels in Rice Plant
Bending angle Lodging level Major axis of a rice hill Rice hill Wind direction Wind speed
2009/8/6
This experiment started from the observation that the cross section of a rice hill was ellipse in shape. When two rice plants cv. Koshihikari were transplanted in a 1/2000 are Wagner pot, the rice hil...
Adaptive Regulation of Photosynthesis in Rice Plant to Weak Light Condition and the Contribution of Root Activity to Regulation Mechanism
Dark respiration Dry matter production Nitrogen absorption Photosynthesis Rice plant Root respiration
2009/8/6
Three cultivars of rice plants were grown in pots in a shading frame of 50% light intensity and on shadowed place at high altitude of 303m in hillside during the different period from tillering to ear...
Effect of Different Temperatures Given to the Culm-Base of Rice Plant on the Emergence and Elongation of its Tiller under Controlled Environment
Culm-base Environment Oraza satiba Plant type Synchronously emerging tiller
2009/8/5
The emergence and elongation of the tiller buds of rice plants are greatly affected by the environmental temperature, especially by the temperature around the culm-bases where the tillers differentiat...
Physiological Response to Salinity in Rice Plant : I. Relationship between Na+ uptake and transpiration under different humidity and salinity conditions
CO2 diffusive resistance Ion uptake Leaf water content Na+ content
2009/8/4
Using two varieties, KR1 (salt-tolerant variety) and IR28 (salt-sensitive variety), relationship between Na+ uptake and transpiration under different humidity and salinity conditions was examined. The...
Physiological Response to Salinity in Rice Plant:II. Relationship of sodium exclusion to transpiration and root-respiration rates in NaCl-treated rice plant
Na content Rice Root-respiration rate Sodium exclusion ranspiration rate
2009/7/30
In order to clarify the relationships of sodium exclusion to transpiration and root-respiration rates in 100 mmol 1-1 NaCl-treated rice plant, transpiration stream concentration factor of Na+ (TSCFNa+...
Influence of Leaf Xylem Water Potential and Leaf Position on Relationship between Nitrogen Content and Photosynthetic Rate of Rice Plant
Days after fully expanded Leaf position Leaf xylem water potential Nitrogen content
2009/7/29
Even though the nitrogen content (mgNdm-2) of rice leaves is the same, a large difference in the net photosynthetic rate (Pn) has been recognized. To determine the reasons for the difference, leaf xyl...
Physiological Response to Salinity in Rice Plant:VI. Induced salt-tolerance by low NaCl pretreatment
Adaptation Cell-wall constituents Ion exclusion NaCl pretreatment Rice Salt tolerance
2009/7/28
The objective of the study was to investigate the possibility of inducing salt-tolerance in rice by pretreatment with low concentrations of NaCl. At the 6th leaf stage, salt tolerant Kala Rata 1-24 (K...
Measurement of Dark Respiration Rate in the Small Portion of Rice Plant Tissues and Organs by Gas-Phase Oxygen Electrode
Dark respiration rate Gas-phase oxygen electrode Internode Leaf blade Leaf sheath Panicle Rice plant
2009/7/24
Measurement of Dark Respiration Rate in the Small Portion of Rice Plant Tissues and Organs by Gas-Phase Oxygen Electrode.
A Model to Estimate the Increase of Leaf Number on the Main Culm of the Rice Plant
Cool summer damage Developmental model Early warning system Effective accumulated air temperature Paddy rice
2009/7/16
We are building an early warning system for preventing the decrease in rice-yield by cool summer damage. To monitor the developmental stage of rice plants in the whole Tohoku area, we constructed a mo...
Influence of High Water Temperature on Leaf Growth in Rice Plant (Oryza sativa L.)
Developmental stage High water temperature Leaf blade length Leaf blade width Leaf sheath length
2009/7/10
This study was undertaken to evaluate the effect of short period high water temperature (35°C) on the growth response of immature leaves in rice plants. The test plants was exposed to high water temp...