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Sterility Caused by Cooling Treatment at the Flowering Stage in Rice Plants:IV. Effects of the starting time of cooling, morning and evening, and the soil temperatures and the light conditions after cooling on the fertility
Cool temperature Diurnal variation Flowering stage Rice Sterility
2009/8/6
Effect of the starting time of cooling at the flowering stage together with the effects of water temperatures and light conditions after cooling on the fertility percentage were examined. The fertilit...
Single Leaf Photosynthesis of Rice Plants under Field Conditions:IV. Variation in single-leaf photosynthesis among several successive days, and the interactive effects of irradiance and stomatal conductance on CER
Evaporation rate Light intensity at the leaf surface Light saturation point Rice plants Single-leaf photosynthesis
2009/8/6
(1) Variations in single-leaf photosynthesis (CER) among days: CER under saturation light intensity at nearly the same time of several successive days were examined, at three growth stages. (i) CER va...
Growth Correlations among Root Number, Root Diameter and Stem Diameter in Some Cultivars of Rice Plants
Growth Correlations Root Number Root Diameter Stem Diameter Rice Plants
2009/8/6
Growth Correlations among Root Number, Root Diameter and Stem Diameter in Some Cultivars of Rice Plants.
Studies on the Effect of the Relative Humidity of the Atmosphere on the Growth and Physiology of Rice Plants : VI. Effect of ambient humidity on the photosynthetic rate of a rice plant population model
Leaf temperature Photosynthetic rate Population Relative humidity Rice Stomatal aperture
2009/8/6
The effect of ambient humidity on the photosynthetic rate of a rice plant population model (area: 120×60 cm, Planting density: about 40 plants/dm2, leaf area index: 6∼7, plant height: about 30 c...
Single Leaf Photosynthesis of Rice Plants under Field Conditions:II. Individual variations in single-leaf photosynthesis and the physiological basis for it
Bleeding rate Rice plants Single-leaf photosynthesis Stomatal conductance
2009/8/6
A group of leaves, each of which was situated at the equivalent position on a stem (for instance, the second leaf counted from the uppermost fully expanded leaf of each stem), were chosen and their i...
Single Leaf Photosynthesis of Rice Plants under Field Conditions:I. Aspects of single-leaf photosynthesis and the regulating factors
Field conditions Light saturation point Photosynthesis-regulating factor Rice plants Single-leaf photosynthesis
2009/8/6
Single-leaf photosynthesis in situ were observed under field conditions and the regulating factors investigated. The light intensity at the leaf surface was shown to act as the leading factor. Howeve...
Growth Regulating Action of Isoprothiolane in Plants:IV. Effect of isoprothiolane on translocation of photosynthetic products in rice plants during the reproductive stage
Autoradiography Inferior rachis-branch Isoprothiolane Rice (Oryza sativa L.)
2009/8/6
To determine the promotive effect of isoprothiolane (diisopropyl-1, 3-dithiolan-2-ylidenemalonate, IPT) on ripening in rice plant (Oryza sativa L., cv. Nipponbare), 14C-tracer studies after 14CO2 assi...
Sterility Caused by Cooling Treatment at the Flowering Stage in Rice Plants:III. Establishment of a method of in vitro pollen germination
Boric acid Incubation temperature In vitro germination Pollen Rice
2009/8/6
Rice pollen grains germinated more than 80% with low variation (standard deviation less than 10%) and their pollen tubes elongated to more than 150μm within one hour with a simple medium composed of 1...
Allometric Relationships between Axial and Radial Stem Growth in Rice Plants
Allometry Rice plant Stem growth
2009/8/6
Allometric relationships between axial and radial stem growth in rice plants (cvs. Nipponbare, Musashikogane and Dobashi 1) were examined based on developmental studies on successive stem segments (=f...
Studies on Lodging in Rice Plants:II. Morphological characteristics of the stem at the breaking position
Dry matter Flattening of internode Hardness of internode Special breaking position Supplementary strengthening efficiency of leaf sheath Thickness of leaf sheath Width of internode
2009/8/6
In order to clarify the reason why breaking occurs at the special breaking position (BP) within the broken internode, morphological characteristics of BP were compared with those of other areas within...
Flag Leaf Number Determination of Secondary and Tertiary Tillers and Heading Characteristics of Rice Plants
Flag leaf number Heading date Main culm Rice plant Sheath wrapping Tillers
2009/8/6
When the number of leaves on the main culm is known, the number of leaves on secondary to quarternary tillers can be determined based on the following growth characteristics and procedures, even if th...
Growth Dependent Changes of Endogenous Ethylene Levels in Leaf Sheaths and Panicles in the Life Cycle of Rice Plants
Ethylene Leaf sheath Life cycle Oryza sativa L Panicle Reproductive stage
2009/8/6
We examined the changes of the endogenous ethylene levels in the leaf sheaths and the panicle in the life cycle of rice plants. The ethylene concentrations in the gas air squeezed from the leaf sheath...
Patterns of Soil Nitrogen Release in Paddy Fields of Warm Regions in Japan and Diagnosis of Fertilizer Application : I. Influence of soil nitrogen release from paddy soils on growth and yield of rice plants of warm regions
Basal application of nitrogen Nitrogen uptake Rice plants Soil fertility
2009/8/5
The Influence of nitrogen release from paddy soils on the grain yield of rice plants was investigated, and the optimum amount of nitrogen fertilizer application was estimated for each of the soil nitr...
Role of the Leaf Sheath in Elongation of the Internodes of Rice Plants
Gibberellin Leaf sheath Plant growth regulators Rice Stem elongation
2009/8/4
The main aim of this paper is to present how the leaf sheath concerns internode elongation in rice, using the japonica cultivar Sasanishiki. Leaf sheaths were removed at the begining of the rapid elon...
On Resistance to Water Transport from Roots to the Leaves at the Different Positions on a Stem in Rice Plants
Ageing Lower leaf Midday stomatal closure Resistance to water transport Rice plants
2009/8/4
The degree of the midday depression in the stomatal conductance and the photosynthetic rate is larger in the lower leaves than in the upper leaves on a stem. It was clarified in the previous report th...