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Effects of High Nitrogen Supply on the Susceptibility to Coolness at the Young Microspore Stage in Rice (Oryza sativa L.):Gene Expression Analysis in Mature Anthers
Anther Cool temperature susceptibility Expansin Gene expression High nitrogen PCR Pollen germination
2009/7/21
Changes in gene expression patterns by high nitrogen (High-N) and High-N plus cooling at the young microspore stage (High-N-cooling) in rice mature anthers were analyzed by semiquantitative RT-PCR wit...
Root System Morphology of Pepper and Melon at Harvest Stage Grown with Drip Irrigation under Desert Conditions in Baja California, Mexico
Capsium annuum L Cucumis melo L Desert Drip irrigation Mexico
2009/7/21
An international project between the Japanese and Mexican governments on crop production is being conducted in Guerrero Negro, Baja California, Mexico. The objective of the project is to establish a ...
Effect of Nitrogen Application and Leaf Removal on the Metabolism of Carbohydrate in Leaves and Stems of Rice Plants at Ripening Stage
Carbohydrate metabolism Leaf clipping treatment Neck internade of panicle Nitrogen top dressing
2009/7/21
Nitrogen topdressing and leaf removal were carried out on the rice variety Hitomebore immediately after heading and on Akitakomachi before heading, respectively.In the nitrogen topdressing(+N)plot, c...
Effect of Limiting Oxygen Supply on the Ultrastructure of Root Tip Cells in the Germinating Stage of Rice Seeds
Aerobic germination Anaerobic germination Rice Root tip Ultrastructure
2009/7/21
Root tips excised from rice seeds germinated aerobically and anaerobically for 12, 18, 24, 48 and 72 h were used as experimental materials, and the changes in the ultrastructure of the plerome cells o...
Effect of Top Dressing at Booting Stage on Crude Protein Content of Wheat in Kyushu District
Ash Booting stage Flour color Protein Top dressing Wheat
2009/7/16
To increase the crude protein content of wheat in the Kyushu district, the amounts of basal fertilizer and top dressing were decreased to 72% of standard and the remaining 28% fertilizer was applied a...
Estimation of Cool-Weather Tolerance at the Flowering Stage and its Relationship with that of the Booting Stage in Hokkajdo Rice Varieties
Booting stage Cool weather tolerance Flowering stage Hokkaido Rice Varietal difference.
2009/7/16
Cool-weather tolerance at the flowering stage of 52 Hokkaido rice varieties was examined in 1998 and 1999. Eight plants having only the main culm were cultivated in small square pots, 15×5×10cm, and ...
A New Morphogenetic Model on the Most Suitable Leaf-Internode Unit and Developmental Stage for Controlling Plant Types in Rice Cultivation
Controlling plant type Internode elongation Leaf elongation Lodging Nitrogen absorption
2009/7/15
In any theory on rice cultivation, methods for controlling the plant type form the core. An analysis identified the most suitable leaf-internode unit for targeting to control the plan type and the app...
Diurnal Changes in Mineral Composition of Xylem Sap and Bleeding Rate at Harvest Stage in Pepper and Melon Cultivated by Drip Irrigation under Desert Condition in Baja California, Mexico
Bleeding rate Capsium annuum L Cucumis melo L Desert Mexico Root Soil temperature Xylem sap
2009/7/15
A project to improve the crop production in arid area is underway in Guerrero Negro, Baja California, Mexico as a joint enterprise of Japanese and Mexican Government. The objective of this project is ...
Effect of Early-Stage Shading of Direct Seeded Rice on Growth and Yield Components
Diameter of culm Late seeding Percentage of ripened grains Rice plant Shading
2009/7/15
The tillering ability and yield of sod-seeded rice are affected by the shading by manure crops during the intial stage. In this study, the effects of shading during the early stage of growth on the gr...
Correlation between Spikelet Fertility and Relative Root Amount in Rice Plants Exposed to Cool Temperature at the Young Microspore Stage
Booting stage Cool-temperature tolerance Nitrogen fertilizer Rice plant Root
2009/7/15
Many field observations have suggested that roots play an important role in the tolerance to the sterillity-type cool-weather damage at booting stage in rice plants. However, how the roots affect fert...
Development of a Simple Testing Method for Cool Weather Tolerance at the Flowering Stage of Rice Using an Air Conditioned Room
Air conditioned room Cool weather tolerance Flowering stage Rice Test method
2009/7/15
We report a simple method devised for testing the cool weather tolerance at the flowering stage in rice. In small square pots, 15 cm in length, 5 cm in width and 10 cm in height, eight plants having ...
Effects of Gibberellin and Cytokinin on the Resistance to Cool Weather at the Young Microspore Stage in Rice Plants (Crop Physiology and Cell Biology)
Cool-weather resistance Cytokinin Fertility Gibberellin Nitrogen Pollen Rice Young microspore stage
2009/7/14
The effects of gibberellin, cytokinin and an inhibitor of gibberellin biosynthesis on spikelet fertility and the number of pollen grains were examined in rice plants which were cooled at the young mic...
Genetic Resources of Salt Tolerance at Germination and the Seedling Stage in Wheat (Genetic Resources and Evaluation)
Genetic resource Genome Geographical distribution Germination
2009/7/14
About 1, 300 wheat varieties were tested for salt tolerance at germination and the seedling stage. Salt tolerance at these two stages showed wide and continuous variations among the wheat varieties te...
Effects of Planting Density and Topdressing at the Panicle Initiation Stage on Spikelet Number per Unit Area
Differentiated spikelet Nitrogen Panicle number Planting density Primary rachis-branch
2009/7/14
Dense planting is an important cultural technique to increase the number of spikelets per unit area, and is thought to be favorable for grain filling because it increases the percentage of spikelets o...
Effects of Planting Density and Topdressing at the Panicle Initiation Stage on Spikelet Number per Unit Area
Differentiated spikelet Nitrogen Panicle number Planting density Primary rachis-branch
2009/7/14
Dense planting is an important cultural technique to increase the number of spikelets per unit area, and is thought to be favorable for grain filling because it increases the percentage of spikelets o...