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Varietal Differences in the Responses of Yield Components of Rice Plants to Nitrogen-Free Basal Dressing Accompanied with Sparse Planting Density in the Tohoku Region of Japan
Nitrogen-free basal dressing Rice cultivars Sparse planting density Weather conditions Yield components
2009/7/28
Grain yield of rice plants is composed of different yield components that vary with the genotype, environmental condition and cultivation practice. Experiments were conducted in 1999, 2000 and 2001 in...
Varietal Differences in Tillering and Yield Responses of Rice Plants to Nitrogen-Free Basal Dressing Accompanied with Sparse Planting Density in the Tohoku Region of Japan
Nitrogen-free basal dressing Rice cultivars Sparse planting density Weather conditions Yield
2009/7/28
At present, the main challenge in rice production is to achieve a high and stable yield with low input. In this study, the growth of tillers and yield of 12 rice cultivars and lines in the practice of...
Studies on Lateral Buds Growth into Ratoon Tillers in Early-season Culture of Rice Plants
Differentiation Early-season culture Lateral bud Ratoon Regrowth Tiller
2009/7/28
The yielding ability and the effect of fertilization on yield were investigated in ratoon crop rice in early-season cultures. The total leaf number of each tiller in the ratoon crop was compared with ...
Morphological Studies on the Regularity of Shoot Development in Rice Plants : VI. The regular relationship between leaf primordia developments in the main shoot and primary tiller buds
Anatomy Differentiation Leaf primordium Oryza sativa L Plastochron Rice plant Shoot apex
2009/7/28
Rice cv. Koshihikari was seeded and grown for three years. Seedlings were dissected under a stereoscopic microscope for anatomical studies at the following stages; in n.1 age when the (n+1)-th lamina...
Studies on the Effect of the Relative Humidity of the Atmosphere on the Growth and Physiology of Rice Plants : X. Effect of ambient humidity on the translocation of assimilated 13C in leaves
Photosynthetic product Relative humidity Rice Translocation
2009/7/27
^<13>C-labelled CO2 was fed to rice seedlings for 60 min in the light under low (60%) or high (90%) humidity. The amount of 13C assimilated by the leaves under high humidity was much greater than that...
Effect of Foliar Application of Triacontanol on Growth and Yield of Rice Plants:IV. Effect of triacontanol on the ripening of rice plants under shading and low temperature conditions
Foliar application Grain weight increase Low temperature Rice plants Ripening Shading Triacontanol
2009/7/27
The effects of foliar application of triacontanol (TRIA; 10ppb) on the ripening of rice were investigated under the condition of shading after heading and of low temperature before heading. The shadin...
Regularity in Variation of Leaf Color and Nitrogen Distribution in Half-Leaf Blades by Leaf Position on the Stems of Rice Plants:II. Uneven translocation of nitrogen between outside and inside half-leaves
Chlorophyll meter value Distribution Half-leaf blade Leaf blade width Nodal root Translocation
2009/7/27
We have reported in a previous paper that the outside half-leaf had a smaller volume and deeper leaf color than the inside half-leaf. The half-leaf color was not dependent only on the difference in le...
Effects of Planting Density on Growth and Distribution of Roots in Rice Plants (Oryza sativa L.)
Crown root Oryza sativa L Planting density Root system Top-root ratio
2009/7/24
Effects of planting density on the formation of the root system and the relative growth of the top and root in rice plants were investigated. The four planting densities used were 45, 70, 95 and 120 h...
Studies on Salt Tolerance in Korean Rice Cultivars : II. Effects of NaCl treatment on sodium and potassium ions concentration in leaf blade, leaf sheath and root of rice plants
Cultivar difference Oryza sativa L. Potassium concentration Rice Salt tolerance
2009/7/24
The mechanism of cultivar difference in salt tolerance was investigated with Korean rice cultivars, paying special attention to the relationship between sodium (Na) and potassium (K) ions in various ...
Effects of Planting Pattern on the Interception of Solar Radiation by the Canopy and the Light Extinction Coefficient of the Canopy in Rice Plants Direct-sown in a Submerged Paddy Field
Crop growth rate Direct sowing Interception of solar radiation Light-intercepting characteristics Planting pattern Rice
2009/7/24
In order to investigate effects of planting pattern on the interception of solar radiation by the canopy and the light extinction coefficient of the canopy in rice, the rice plants direct-sown in a su...
Nitrogen Content of Leaves Affects the Nodal Position of the Last Visible Primary Tiller on Main Stems of Rice Plants Grown at Various Plant Densities
Direct sowing Last visible primary tiller Leaf nitrogen content Nodal position Plant density Rice
2009/7/24
The nitrogen content of leaves in rice plants at various planting densities in the field and under high and low levels of nitrogen in pots were comparatively examined, and thereby the effect of the ni...
Formation of Organic Acids in the Root Apices of Rice Plants (Oryza sativa L.) Grown in Acidic Nutrient Solution Containing Aluminum
Acid soil Aluminum Citrate Organic acid Oryza sativa L. Rice Root apex
2009/7/24
Formation of Organic Acids in the Root Apices of Rice Plants (Oryza sativa L.) Grown in Acidic Nutrient Solution Containing Aluminum.
Diurnal and Phenological Changes in the Rate of Nitrogen Transportation Monitored by Bleeding in Field-Grown Rice Plants (Oryza sativa L.)
Takeo Sakaigaichi Shigenori Morita Jun Abe Takeshi Yamaguchi
2009/7/23
Nitrogen uptake is essential for rice growth and yield. Thus, the development of a simple and rapid method for monitoring nitrogen absorption is strongly required. We examined the fundamental properti...
Variation in Spikelet-Related Traits of Rice Plants Regenerated from Mature Seed-Derived Callus Culture
Callus Regenerated plants Rice Spikelet fertility
2009/7/23
Callus is an excellent source for in vitro plant regeneration, but plants regenerated from callus sometimes show phenotypic and genotypic variation from the initial plants. In this study, the variatio...
Effects of Assimilate Supply and High Temperature during Grain-Filling Period on the Occurrence of Various Types of Chalky Kernels in Rice Plants (Oryza sativa L.)
Assimilate supply Chalky kernels Grain filling High temperature Milky white kernels Rice
2009/7/23
The objective of this study was to clarify the effect of assimilate supply and high temperature on the occurrence of chalky kernels, i.e. milky white, white back, basal white and white belly kernels. ...