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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...
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...
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...
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 ...
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 ...
Historical Changes in Grain Yield and Photosynthetic Rate of Rice Cultivars Released in the 20th Century in Tohoku Region
Grain filling Nitrogen application Oryza sativa L. Photosynthesis Rice Yield improvement
2009/7/28
A retrospective analysis of the physiological basis of genetic yield improvement should provide us a direction for future yield improvement. The objectives of the present study were to evaluate the ch...
Root System Morphology of Four Rice Cultivars:Response of Different Component Roots to Nitrogen Application
Adaptability Ecotype Heavy manuring Lateral root Nitrogen Phenotypic plasticity Rice Root system
2009/7/28
A crop root system morphology can be determined by the development of different component roots, such as nodal root axes and their concomitant lateral roots of two different types ; long, large in dia...
Comparisons of Root Growth in Indica-Japonica Hybrid and Japonica Type Rice Cultivars Using Leaf-Cutting Method
Indica-japonica hybrid Leaf-cutting method Rice Root
2009/7/24
Comparisons of Root Growth in Indica-Japonica Hybrid and Japonica Type Rice Cultivars Using Leaf-Cutting Method.
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 ...