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Field evaluation of selected NERICA rice cultivars in Western Kenya
NERICA upland rice yield moisture stress Kenya
2011/2/22
Food shortage is a major problem in sub-Saharan Africa as population increases. NERICA (New Rice for Africa), the high yielding rice cultivars with short growth cycle were developed to solve the food ...
Evaluation of kernel elongation ratio and aroma association in global popular aromatic rice cultivars in tropical environment
Aromatic rice kernel elongation ratio aroma kernel elongation ratio and aroma association
2011/1/11
Aroma and cooked kernel elongation are the most important quality traits of aromatic rice, which differentiate the highly valued aromatic rice from the other rice types. Previous studies on genetic an...
Growth and Yield of Six Rice Cultivars under Three Water-saving Cultivations
Grain yield Lowland rice Upland rice Water productivity Water-saving cultivation
2010/3/4
We evaluated the genotypic differences in growth, grain yield, and water productivity of six rice (Oryza sativa L.) cultivars from different agricultural ecotypes under four cultivation conditions: co...
Differential Sensitivity of Rice Cultivars to Salinity and Its Relation to Ion Accumulation and Root Tip Structure
Casparian band Ion accumulation Rice (Oryza sativa L) Root tip Salinity resistance Sodium chloride (NaCl)
2010/3/4
Effects of NaCl on the growth, ion content, root cap structure and Casparian band development were examined in four rice (Oryza sativa L.) cultivars with different salt resistance (salt-sensitive indi...
Analysis on Difference of Dry Matter Production between Rice Cultivars with Different Plant Height in Relation to Gas Diffusion inside Stands
Canopy structure Dry matter production Gas diffusion Leaf area density Photosynthesis
2009/8/6
The differencc in yield, dry matter production, and physiological and ecological characters were studied between Tainung 67, a high-yielding cultivar (long-culm and ear-weight type) in Taiwan, and Nip...
Comparison of Plant Type between New and Old Rice Cultivars Using Computer Image Analysis
Computer image analysis Leaf angle Leaf distribution Oryza sativa L
2009/8/6
Computer image analysis of a side-view photograph of a plant was applied to compare the plant type between eight new and seven old Japanese rice cultivars grown in a paddy field. Photographs of t...
Effect of Exogenously Applied Gibberellic Acid (GA3) on Initial Growth of Rice Cultivars
Gibberellic acid Net assimilation rate Rice varieties Seedling growth Water culture
2009/8/6
The effects of exogenously applied GA3 on rice seedling growth were analyzed by using 3 indica and 3 japonia varieties and the following results were obtained. (i) The increase of exogenously applied ...
Study on Applicability of Nitrogen-Deep Placement Culture from the View Point of Productivity of Various Rice Cultivars in Warmer Area
Indica Japonica Japonica-indica hybrid Nitrogen-deep placement Rice Sink-source ratio
2009/8/5
An applicability of nitrogen-deep placement culture (NDPC) in warmer area suffered from poor number of spikelets and low sink-source ratio, and responsibilities of NDPC for not only japonica rice cult...
The Changes of Endogenous Abscisic Acid in Developing Grain of Two Rice Cultivars with Different Grain Size
Abscisic acid Endogenous content Grain-filling process Grain size Rice
2009/8/4
Two cultivars of rice (Oryza sativa L.) with different grain size were investigated to measure the free ABA contents during grain development. In both cultivars, the content and concentration of endog...
Response of the Seminal Root Elongation to NH4-Nitrogen in Several Rice Cultivars
Adaptability Heavy manuring NH4-nitrogen Rice Root elongation Seminal root
2009/8/4
The aim of this study was to examine the effect of various NH4-nitrogen concentrations in culture solution on the seminal root elongation of the rice plant. Ten rice cultivars with differing adaptabil...
Root System Development of Japonica-Indica Hybrid Rice Cultivars:1. Number and elongation direction of primary roots
Elongation direction Japonica-Indica hybrid rice cultivars Primary root Rice Root Shoot unit
2009/7/30
To characterize the root system of the Japonica-Indica hybrid rice cultivars (Milyang 23, Suweon 258), we compared the number and elongation direction of primary roots both per stem and shoot unit bas...
Root Growth and Distribution in Some Japonica-Indica Hybrid and Japonica Type Rice Cultivars under Field Conditions
High-yielding rice cultivars Oryza sativa L Rice Root length density Root system Root weight density
2009/7/30
The development of rice root system has been studied in Japonica-Indica hybrid cultivars (J-IH), Milyang 23 and Suweon 264, and Japonica type cultivars (JT), Nipponbare and Koshihikari, grown in a pad...
Studies on the Salt Tolerance in Korean Rice Cultivars : I. Mechanism of salt tolerance in dry matter production and leaf photosynthesis
Cultivar difference NaCl treatment Oryza sativa L Osmotic adjustment Photosynthesis
2009/7/29
Reduction of relative growth rate (RGR) due to the NaCl treatment was examined in the seedlings of six Korean rice cultivars which had been reported to be different in salt tolerance on the level of ...
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...
Contribution of Sink and Source Sizes to Yield Variation among Rice Cultivars
Dry matter production Nitrogen application Non-structural carbohydrate Sink Source and Yield
2009/7/29
In order to identify the key factors that arrest yield improvement in rice, we observed fifteen divergent cultivars in a field at Kyoto, Japan in 1995 and 2001 under various nitrogen (N) regimes. The ...