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Genotypic Variation in Ability to Recover from Weed Competition at Early Vegetative Stage in Upland Rice
Improved cultivar Laos Recover from weed competition Slash-and-burn Traditional cultivar Upland rice
2010/3/4
In northern Laos, weeds are a major constraint to upland rice production in slash-and-burn systems. Two experiments were conducted to assess genotypic variation in ability to recover from weed competi...
High-yielding Crop Management by Enhancing Growth in Reproductive Stage of Direct-Seeded Rainfed Lowland Rice (Oryza sativa L.) in Northeast Thailand
Biomass production Growth duration Nitrogen uptake Reproductive stage
2010/3/4
The crop management in direct-seeded rice to promote growth during the reproductive stage was evaluated in weed-controlled toposequentially intermediate fields in a small watershed in Northeast Thaila...
Path Analysis of Tiller Density of Winter Wheat Demonstrates the Importance of Practices that Manipulate Clod Size Based on Soil Moisture at Seeding in the Rice–Wheat Cropping System
Emergence depth Seeding rate Seedling establishment ratio Site-specific management Tiller
2010/3/4
The moisture of paddy soil after rice cropping is a major impediment to the establishment, tillering and yield of winter wheat in the rice−wheat (R−W) cropping system. We examined the seed...
Biomass Production and Lodging Resistance in‘Leaf Star’,a New Long-Culm Rice Forage Cultivar
Biomass production Culm stiffness Culm thickness Forage rice cultivar Leaf Star Lodging resistance Long-culm cultivar
2010/3/4
Biomass production and lodging resistance in the new long-culm forage cultivar ‘Leaf Star’, developed using a precise evaluation method for lodging resistance, were evaluated by comparing these proper...
Varietal Differences in Photosynthetic Rates in Rice Plants,with Special Reference to the Nitrogen Content of Leaves
Nitrogen content Photosynthetic rate Rice variety Rubisco content Stomatal conductance
2010/3/4
The photosynthetic rate in the flag leaf of rice at the full heading stage was examined in three japonica varieties, Koshihikari, Aikoku and Asanohikari, and the indica high-yielding variety Takanari ...
Effects of Top Dressing on Growth and Panicle Dry Weight as Affected by Soil Water Stress at the Early Panicle-Development Stage in Rice (Oryza sativa L.)
Leaf area duration Net assimilation rate Rice SPAD Total dry weight
2010/3/4
Rice yield is reduced by a short period of water stress at the early panicle-development stage. This study was conducted to examine the factors that reduce the panicle dry weight of rice subjected to ...
Effects of Temperature,Solar Radiation,and Vapor-Pressure Deficit on Flower Opening Time in Rice
Flower opening in the early morning Flower opening time Heat-induced sterility Oryza sativa Rice cultivars Solar radiation Temperature before anthesis Vapor-pressure deficit
2010/3/4
Flower opening in the early morning helps to avoid sterility of rice (Oryza sativa L.) caused by heat stress at anthesis. Although flower opening time (FOT) is under genetic control, it is also affect...
Comparison of Susceptibility to Photoinhibition and Energy Partitioning of Absorbed Light in Photosystem II in Flag Leaves of Two Rice (Oryza sativa L.) Cultivars that Differ in Their Responses to Nitrogen-Deficiency
Chlorophyll fluorescence Energy partitioning Hydrogen peroxide Nitrogen-deficiency Photoinhibition Photoprotection Photosynthesis Rice (Oryza sativa L.)
2010/3/4
The energy partitioning in photosystem II (PSII) and the susceptibility to photoinhibition in PSII were investigated in flag leaves of two rice cultivars, Shirobeniya (a traditional japonica) and Aken...
Agronomic and socio-economic constraints to high yield of upland rice in Tanzania
NERICA adaptability soil fertility upland rice agro-ecosystems productivity
2011/1/10
A field survey was conducted in March 2009 in upland rice growing agro-ecosystem of four districts in Tanzania namely Ulanga, Kyela, Morogoro and Korogwe to investigate the agronomic and socio-economi...
Estimating crop coefficient model for upland rice (NERICA) under sprinkler irrigation system
Crop coefficient upland rice sprinkler irrigation
2011/1/10
Efficient crop coefficient (Kc) estimation is very important to adequately determine water use of a selected crop. In this study, crop coefficient was determined for upland rice (NERICA) under a sprin...
Research Advances in the Key Enzymes Involved in Rice Starch Quality Regulation
基因克隆 基因表达 关键酶 稻米淀粉品质
2009/11/18
稻米淀粉的形成是影响水稻产量和品质的决定性因素之一。因此, 开展稻米淀粉形成过程中所涉及关键酶的研究是非常必要的。随着分子生物学技术的快速发展, 有关稻米淀粉品质的研究也越来越深入, 并取得了较大进展。该文对水稻淀粉品质形成过程中的关键酶及其分子生物学研究进展进行了较为详尽的综述, 主要包括ADP葡萄糖焦磷酸化酶、淀粉合成酶、淀粉分支酶和淀粉去分支酶等, 并对该领域的发展趋势进行了展望。
Influence of Irrigation Intervals, Some Cultivars and Plant Spacing on Growth, Yield and its Components in Rice Part (2) Yield and Yield Components
Rice irrigation intervals cultivars plant spacing yield and yield components
2010/11/15
A two-year experiment was carried out on rice (Oryza sativa L.), during 2006 (S1) and 2007
(S2), at the Rice Research and Training Center (RRTC) at Sakha, Kafr El-Sheikh Governorate, Egypt. The trail...
ADOPTION OF RICE TECHNOLOGICAL PACKAGE BY THE FARMERS OF IRRIGATED PUNJAB
Oryza sativa farmers technology transfer Punjab Pakistan
2009/9/30
The adoption of modern production technologies has been the concern of developing
countries. The assessment of adoption process provides valuable information to the
researchers, extensionists and ...
Identification of Restorers and Maintainers for Developing Hybrid Rice
Oryza sativa genotypes crossbreeding hybrids Pakistan
2009/9/29
Some genetic material was evaluated at Rice Research Institute, Kala Shah Kaku,
Lahore during 2002-2004 for its use in hybrid rice technology. One hundred and nine
rice genotypes were evaluated for ...
RICE GERMPLASM EVALUATION FOR AGRONOMIC TRAITS AND THEIR INFLUENCE ON STEM BORER (CHILO AGAMEMNON BLES.) RESISTANCE
Oryza sativa germplasm heritability agronomic characters Chilo agamemnon pest resistance,Egypt
2009/9/29
A study was conducted at Rice Research Training Centre, Sakha, Kafr Al Sheikh,
Egypt during 2003-2006. Forty-six lines were selected from four populations. These
populations were produced from five ...