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Variability in Nitrogen Fixation Activity among Soybean Cultivars Grown under Field Conditions
Cultivar difference Dry matter accumulation Nitrogen fixation Nodule dry weight Non-nodulating cultivar
2009/7/30
Variability in nitrogen fixation activity among soybean cultivars was examined under well-managed field conditions. Four and 15 soybean cultivars were grown in 1989 and 1991, respectively, along with ...
Plant Growth, Uptake and Partitioning of Nitrogen in Alfalfa Seedlings as Affected by the Form of 15N-Labelled Combined Nitrogen
Alfalfa Ammonium-N Nitrate-N Nitrogen fertilizer Nitrogen uptake and partitioning Recovery of 15N Root growth
2009/7/30
We investigated the growth, uptake and partitioning of nitrogen (N) in alfalfa seedlings grown in the pot soil where 15N-labelled combined N was applied as nitrate-N or ammonium-N by means of basal dr...
Effects of Canopy Light Distribution Characteristics and Leaf Nitrogen Content on Efficiency of Radiation Use in Dry Matter Accumulation of Soybean Cultivars
Dry matter production Leaf nitrogen content Light extinction coefficient Radiation conversion efficiency SLW Soybean Varietal difference
2009/7/30
The amount of dry matter produced per photosynthetically active radiation (PAR) intercepted by the canopy (EPAR) and factors which might affect EPAR were determined for various soybean cultivars, and ...
Accumulation and Partitioning of Nitrogen During Seed Filling in Old and Modern Soybean Cultivars in Relation to Seed Production
Cultivar differnce Dry matter production Nitrogen accumulation Nitrogen partitioning Seed yield
2009/7/29
Seed productivity of old and modern soybean cultivars was analyzed in relation to accumulation and partitioning of nitrogen during seed filling. Four soybean cultivars were grown on a drained paddy f...
Regularity in Variation of Leaf Color and Nitrogen Distribution in Half-leaf Blades by Leaf Position on the Stems of Rice Plants:I. Variation of chlorophyll meter values and mechanism of leaf formation
Chlorophyll meter Concordance Cultivar Half-leaf blade Leaf blade width Leaf color
2009/7/29
We clarified that the degrees of the difference in color between outside and inside half-leaves were unexpectedly large, which ranged from 1.3 to 5.4 values by the Minolta chlorophyll meter SPAD-502 (...
Carbon and Nitrogen Dynamics with Aging in Seminal Root System of Rice Seedling
Aging Carbon Lateral roots Nitrogen Partitioning
2009/7/29
The allocation pattern of carbon (C) and nitrogen (N) with aging among several organs of rice seedling was investigated with particular attention to the difference in seminal root axis (SRA) and conco...
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...
A Comparison of the Accumulation and Partitioning of Nitrogen in Plants between Two Rice Cultivars,Akenohoshi and Nipponbare,at the Ripening Stage
Leaf nitrogen content Nitrogen accumulation Nitrogen partitioning Photosynthesis Rice Senescence
2009/7/29
To clarify the factors responsible for the maintenance of a high rate of photosynthesis at the ripening stage in the high-yield rice cultivar Akenohoshi, as compared with that in a Japanese standard c...
Analysis of the Number of Spikelets per Panicle on the Main Stems, Primary and Secondary Tillers of Different Rice Genotypes Grown under the Conventional and Nitrogen-Free Basal Dressing Accompanied with Sparse Planting Density Practices
Cultivation practices Main stems Number of Spikelets Primary tillers Rice cultivars Secondary tillers
2009/7/29
The number and development of spikelets on a panicle directly affect the grain yield. In this study, we examined the differences among various rice cultivars in the number of spikelets per panicle (NS...
Nitrogen Uptake by Faba Bean from 15N-Labelled Oilseed-Rape Residue and Chicken Manure with Ryegrass as a Reference Crop
Chicken manure Faba bean N uptake Nutrition Oilseed-rape residue Ryegrass
2009/7/29
The effects of soil amendment with oilseed-rape residue (OSRR) and chicken manure (CM) on the growth and nitrogen (N) uptake of faba bean (Vicia faba L.) were assessed in a pot experiments with Italia...
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...
Analysis of Lodging-Resistant Characteristics of Different Rice Genotypes Grown under the Standard and Nitrogen-Free Basal Dressing Accompanied with Sparse Planting Density Practices
Breaking strength Lodging Lower internodes Nitrogen-free basal dressing Rice cultivars Sparse planting density
2009/7/29
Field experiments were carried out in 2001 and 2002 to examine the lodging-resistance characteristics of various rice cultivars bred for the Tohoku region of Japan including the widely-cultivated cult...
Analysis of the Dry Matter Production Process Related to Yield and Yield Components of Rice Plants Grown under the Practice of Nitrogen-Free Basal Dressing Accompanied with Sparse Planting Density
Dry matter production Nitrogen-free basal dressing Rice cultivars Sparse planting density Weather conditions
2009/7/28
Experiments were carried out in 1999, 2000 and 2001 on the field of Iwate University, Japan to examine the effect of nitrogen-free basal dressing accompanied with sparse planting density (BNo) on the ...
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...
Enhanced Nitrogen Fixation Capabilities of Soybean Rhizobia by Inter- and Intra-specific Cell Fusion
(Brady) Rhizobium Cell fusion Nitrogenase Nodulation Protoplast Soybean
2009/7/28
A procedure for protoplast isolation and regeneration in rhizobia has been established. The use of 1% N-laurylsarcosine in pre-washing of the cells facilitated the cellular lysis by incubation for 1 h...