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Growth Response of Rice (Oryza sativa L.) to Drought:II. Varietal difference in transpiration under water stress and its related plant characteristics
Drought tolerance Humidity Leaf-water content Rice Sugar content Transpiration Varietal
2009/8/5
Transpiration of a rice plant under a low water potential of rooting medium and low air-humidity conditions was studied in order to evaluate varietal difference in response to water stress. Water stre...
Fluctuation of Ethylene Production in Excised Panicles and Flag Leaf Blades during Grain Ripening in Rice (Oryza sativa L.)
Ethylene production Flag leaf blade Milk-ripe stage Oryza sativa L Panicle Plant growth regulator
2009/8/4
Ethylene production and its fluctuation in panicles and flag leaf blades in the rice plant (Oryza sativa L.) during the grain ripening stage were examined. The effect of plant growth regulators (grow...
Variation of the Dark Respiration Rate of Tissues and Organs of Rice (Oryza sativa L.) with Differential Physiological Age and Causal Factors
Age Dark respiration Michaelis-Menten equation Nitrogen Carbohydrate Respiration
2009/7/31
Variation of the specific rate of dark respiration (mgCO2 g dry wt. -1h-1 measured at 29°C, Rs) with the age of the tissues and organs of rice cv. Suweon 258 and Nona Bokra, grown in the favorable fie...
Response of Leaf Water Potential of Rice (Oryza sativa L.) to Evaporative Demand under Paddy Field Conditions:II. Relationship between response and yield
Evaporative demand Grain yield Leaf water potential Location Radiation Spikelet number
2009/7/31
We observed previously (Part 1) that maintenance ability of leaf water potential (Ψ1) in rice plants under paddy field conditions changed depending on planting years and seasons and individual locatio...
Response of Leaf Water Potential of Rice (Oryza sativa L.) to Evaporative Demand under Paddy Field Conditions : I. Changes with plant development
Evaporimeter Evaporative demand Growth stage Leaf water potential
2009/7/31
Because the leaf water potential (Ψ1) of the rice plant (Oryza sativa L.) is strongly affected by the evaporative demand of the atmosphere under paddy field conditions, and most changes in Ψ1 reflect ...
Effects of Water-Saving Irrigation and Nitrogen Fertilization on Yield and Yield Components of Rice (Oryza sativa L.)
Nitrogen application Rice Sprinkler intermittent irrigation Water use efficiency
2009/7/29
The effects of nitrogen (N) application (32, 72 and 112 kg N ha-1 in 2000, and 32, 92 and 152 kg N ha-1 in 2001) and water-saving irrigation and their interaction on grain yield and yield components o...
Effects of Deep Water Treatment on the Growth of Culms and the Lodging Resistance in Japonica Type Paddy Rice (Oryza sativa L.) Cultivars
Breaking strength Deep water treatment Internode Lodging resistance Lysigenous aerenchyma
2009/7/27
We carried out this experiment to clarify the growth of culms of Japonica type rice cultivars under deep water conditions with special reference to lodging resistance of culms. We used four Japonica ...
Analysis of Gravity-induced Growth Response of Shoot in Rice (Oryza sativa L.):Response of leaf pulvinus, lamina joint and torsion of leaf sheath
Gravity response Lamina joint Leaf pulvinus Leaf sheath Oryza sativa L
2009/7/24
Plants were grown in pots containing soil. Every tiller was cut off when it emerged and only the main shoots were allowed to grow Exp. 1. Plants in pots were artificially placed horizontally and the ...
Growth of Three Rice (Oryza sativa L.) Cultivars under Upland Conditions with Different Levels of Water Supply
Biomass production Deep rooting Nitrogen uptake Water-use efficiency
2009/7/24
The total water supply (irrigation plus rainfall) would determine biomass production. This study aimed to elucidate the effects of water supply and cultivar differences on the dry matter production o...
Quantitative Analysis of the Architecture of Seminal Root System of Rice (Oryza sativa L.) Grown under Different Soil Moisture Conditions
Cultivar variation Fractal dimension Lateral root Link length
2009/7/23
We analyzed and compared the development of the seminal root systems (seminal root axis and lateral roots) of seven rice cultivars grown under two different soil moisture conditions (upland and paddy...
Characteristics of Gas Exchange and Chlorophyll Fluorescence during Senescence of Flag Leaf in Different Rice (Oryza sativa L.) Cultivars Grown under Nitrogen-Deficient Condition
Chlorophyll fluorescence Flag leaf Leaf senescence Nitrogen deficiency Photoinhibition Photosynthesis Rice (Oryza sativa L.)
2009/7/21
Effects of nitrogen (N) deficiency on photosynthetic gas exchange and photosystem II (PSII) photochemistry of flag leaves during grain-filling stage were investigated in six rice cultivars, Kasalath (...
A Mutant RM109 of Rice (Oryza sativa L.) Exhibiting Altered Lateral Root Intiation and Gravitropism
2,4-D resistance Gravitropism Lateral root Mutant Oryza sativa L
2009/7/16
We screened a large population of rice (Oryza sativa L., cv. Oochikara) M2 seeds treated with NaN3 to select mutants resistant to exogenously applied 2, 4Dichlorophenoxyacetic acid (2, 4-D). A resist...
Direct-Seeding of Rice(Oryza sativa L.)on Y-shaped Furrow without Tillage and Covering Soil in Poorly Drained Paddy Soil
Direct-seeding Establishments Furrow Grain yield
2009/7/16
Direct-seeding culture without tillage and covering soil using the Y-shaped seeding furrow was examined in 1997 and 1998 at a poorly drained paddy field in Hachirogata(Akita Pref., Japan). The percen...
Growth and Yield Characteristics of Rice (Oryza sativa L.) Grown in Deep-flood Irrigation under No-tillage Cultivation with Single Basal Fertilization to the Nursery Box in Hilly and Mountainous Regions
Controlled-release fertilizer Cool weather damage Deep-flood irrigation Hilly and mountainous regions No-tillage cultivation
2009/7/8
Field trials were conducted to examine the growth and yield characteristics of rice (Oryza sativa L.) cultivated in deep-flood irrigation under no-tillage cultivation with single basal fertilization t...
Competition between cultivated rice（Oryza sativa）and wild rice（Oryza punctata）in Kenya
Competition growth Oryza sativa Oryza punctata cultivated rice wild rice
2009/3/4
This shade house study examined the effect of competition on the growth performance of cultivated (Oryza sativa) and wild (Oryza punctata) rice species in Kenya. Growth was assessed for the two ...