S. Fukai
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View article: Genotypic adaptation to soil water deficit in rice - a comparison of desirable traits for aerobic production and lowland drought resistance
Genotypic adaptation to soil water deficit in rice - a comparison of desirable traits for aerobic production and lowland drought resistance Open
Rainfed lowland rice and aerobic rice are two contrasting cropping systems that differ greatly in their growing environment, water management, and yield level. Rainfed lowland rice is a common cropping system in tropical Asia and the crop …
View article: Genome-Wide Association Study of Early Vigour-Related Traits for a Rice (Oryza sativa L.) japonica Diversity Set Grown in Aerobic Conditions
Genome-Wide Association Study of Early Vigour-Related Traits for a Rice (Oryza sativa L.) japonica Diversity Set Grown in Aerobic Conditions Open
Aerobic rice production is a relatively new system in which rice is direct-seeded and grown in non-flooded but well-watered conditions to improve water productivity. Early vigour-related traits are likely to be important in aerobic conditi…
View article: Grain yield and protein concentration relationships in rice
Grain yield and protein concentration relationships in rice Open
Grain protein concentration (GPC) is an important aspect of rice grain quality, which contributes to nutritional intake requirements; however, high GPC may also reduce eating quality. Both GPC and grain yield (GY) are greatly affected by n…
View article: Narrow root cone angle promotes deeper rooting, cooler canopy temperatures and higher grain yield in a rice (Oryza sativa L.) recombinant inbred line population grown under different water availabilities in aerobic production systems
Narrow root cone angle promotes deeper rooting, cooler canopy temperatures and higher grain yield in a rice (Oryza sativa L.) recombinant inbred line population grown under different water availabilities in aerobic production systems Open
Rice crops are one of the world's major consumers of irrigation water. With water becoming more limited, water-saving aerobic production (AP) systems may provide an alternative to traditional flooded culture. Genotypes with narrow root con…
View article: Low canopy temperature and high stomatal conductance contribute to high grain yield of contrasting japonica rice under aerobic conditions
Low canopy temperature and high stomatal conductance contribute to high grain yield of contrasting japonica rice under aerobic conditions Open
Water limitation is a major concern in rice production. It has been suggested that with adapted genotypes, aerobic rice production offers the maintenance of grain yield while saving water. However, there has been limited exploration of jap…
View article: Effect of nitrogen management on grain yield of rice grown in a high-yielding environment under flooded and non-flooded conditions
Effect of nitrogen management on grain yield of rice grown in a high-yielding environment under flooded and non-flooded conditions Open
With increased cost and scarcity of irrigation water, flooded rice growing system may need to be replaced with water-saving technologies which includes part or complete removal of flooding and to be replaced with non-flooded aerobic condit…
View article: Role of canopy temperature depression in rice
Role of canopy temperature depression in rice Open
Canopy temperature depression (CTD), the difference between canopy temperature (CT) and air temperature, is induced by evaporative cooling of the plants when stomata open and transpiration takes place. This review describes that CTD in ric…
View article: Genomic Regions and Floral Traits Contributing to Low Temperature Tolerance at Young Microspore Stage in a Rice (Oryza sativa L.) Recombinant Inbred Line Population of Sherpa/IRAT109
Genomic Regions and Floral Traits Contributing to Low Temperature Tolerance at Young Microspore Stage in a Rice (Oryza sativa L.) Recombinant Inbred Line Population of Sherpa/IRAT109 Open
Aerobic rice production (AP) consumes less water compared to flooded systems. Developing genotypes and identifying genomic regions associated with low temperature (LT) tolerance at the young microspore stage (YMS) is imperative for AP, par…
View article: Effects of variety, early harvest, and germination on pasting properties and cooked grain texture of brown rice
Effects of variety, early harvest, and germination on pasting properties and cooked grain texture of brown rice Open
Brown rice is superior to white rice in nutritional value and in the prevention of chronic diseases. However, it is not the preference of consumers and the relative consumption of brown rice is limited due to a number of factors including …
View article: Factors determining water use efficiency in aerobic rice
Factors determining water use efficiency in aerobic rice Open
With shortages and increased cost of irrigation water in many rice growing areas, water saving technologies such as aerobic rice are required to ensure sustainable rice production. The present study is a review of published papers on aerob…
View article: Effect of Early Harvest and Variety Difference on Grain Yield and Pasting Properties of Brown Rice
Effect of Early Harvest and Variety Difference on Grain Yield and Pasting Properties of Brown Rice Open
Green grains that are harvested before maturity and dehulled have been reported to have higher nutritional value than fully matured brown rice. Two years of aerobic field experiments were conducted to determine the effect of variety, early…
View article: Quantitative trait loci (QTL) for low temperature tolerance at the young microspore stage in rice (<i>Oryza sativa</i> L.) in Australian breeding material
Quantitative trait loci (QTL) for low temperature tolerance at the young microspore stage in rice (<i>Oryza sativa</i> L.) in Australian breeding material Open
Low temperatures at the young microspore stage (YMS) decreases spikelet fertility and is a major limiting factor to rice production in temperate Australia. Low temperature tolerance is a difficult trait to phenotype, hence there is a stron…
View article: QTL Validation and Development of SNP-Based High Throughput Molecular Markers Targeting a Genomic Region Conferring Narrow Root Cone Angle in Aerobic Rice Production Systems
QTL Validation and Development of SNP-Based High Throughput Molecular Markers Targeting a Genomic Region Conferring Narrow Root Cone Angle in Aerobic Rice Production Systems Open
Aerobic rice production (AP) provides potential solutions to the global water crisis by consuming less water than traditional permanent water culture. Narrow root cone angle (RCA), development of deeper rooting and associated genomic regio…
View article: Factors Determining Genotypic Variation in the Speed of Rice Germination
Factors Determining Genotypic Variation in the Speed of Rice Germination Open
Rapid germination is important for both direct seeded rice in the field and for the production of germinated brown rice for healthy food. This study aims to evaluate genotypic differences in germination speed and identify characteristics t…
View article: Genotypic variation in intrinsic transpiration efficiency correlates with sugarcane yield under rainfed and irrigated field conditions
Genotypic variation in intrinsic transpiration efficiency correlates with sugarcane yield under rainfed and irrigated field conditions Open
Intrinsic transpiration efficiency ( i TE ), the ratio of photosynthesis ( A ) to stomatal conductance ( g s ), is considered a useful trait for improving productivity; however, higher i TE with high A is more desirable than that with low …
View article: Recent changes in rice production in rainfed lowland and irrigated ecosystems in Thailand
Recent changes in rice production in rainfed lowland and irrigated ecosystems in Thailand Open
While Thailand is a major rice exporting country in the world, the yield is low among Asian countries. In order to identify factors determining the changes in rice productivity in the country for the last 45 years (1974–2018), various data…
View article: Limited contribution of water availability in genotype‐by‐environment interaction in sugarcane yield and yield components
Limited contribution of water availability in genotype‐by‐environment interaction in sugarcane yield and yield components Open
Water deficit is an important abiotic stress factor limiting sugarcane production. Understanding the effect of water deficit on cane yield, yield components and genotype × environment (G × E) interaction can aid in selecting genotypes that…
View article: The Role of Irrigation in the Commercialisation of Rice Farming in Southern Cambodia
The Role of Irrigation in the Commercialisation of Rice Farming in Southern Cambodia Open
This chapter explores constraints to rice-based farming systems in the rainfed lowlands of Cambodia and the role of different sources of irrigation in alleviating some of those constraints. The research was carried out in lowland districts…
View article: Rainfall variability and its effects on growing period and grain yield for rainfed lowland rice under transplanting system in Northeast Thailand
Rainfall variability and its effects on growing period and grain yield for rainfed lowland rice under transplanting system in Northeast Thailand Open
Rainfall variability in Northeast Thailand during 2000–2015 was examined with objectives to determine any changes in rainfall pattern with time, and to determine its effects on duration of rice growing period and grain yield using a simula…
View article: Research strategies for mechanised production of rice in transition from subsistence to commercial agriculture: a case study from Khammouan in Lao PDR
Research strategies for mechanised production of rice in transition from subsistence to commercial agriculture: a case study from Khammouan in Lao PDR Open
Mechanised rice production has started to take place in response to rural labour shortage and increased labour cost in Khammouan province in central Laos where subsistence rice production is being replaced with commercial agriculture. This…
View article: Combine harvesting efficiency as affected by rice field size and other factors and its implication for adoption of combine contracting service
Combine harvesting efficiency as affected by rice field size and other factors and its implication for adoption of combine contracting service Open
Small combine harvesters have become popular in SE Asia recently, but small rice fields appear to limit its field operation and hence its wide adoption by smallholders. Combine harvesting efficiency, the area of paddy field harvested per u…
View article: Rice milling quality as affected by drying method and harvesting time during ripening in wet and dry seasons
Rice milling quality as affected by drying method and harvesting time during ripening in wet and dry seasons Open
Head rice recovery is known to decrease with the delay in harvesting during ripening, but this effect may differ between wet season (WS) and dry season (DS) and among different paddy drying methods. In five experiments, rice was harvested …
View article: A diagnostic on-farm survey of the potential of seed drill and transplanter for mechanised rice establishment in Central Laos and Southern Cambodia
A diagnostic on-farm survey of the potential of seed drill and transplanter for mechanised rice establishment in Central Laos and Southern Cambodia Open
Due to labour shortages in rural areas, traditional manual transplanting is often no longer feasible and alternative rice establishment methods are required in Central Laos and Southern Cambodia. The work reported here evaluated the potent…
View article: Fissured grain and head rice yield of crops harvested manually or by combine at different ripening stages in Cambodia
Fissured grain and head rice yield of crops harvested manually or by combine at different ripening stages in Cambodia Open
Combine has been well adopted by smallholders in lowlands of Cambodia and is contributing to the development of mechanized rice production for commercial purposes. Broken rice is a major issue for the commercial rice product, and fissured …
View article: Effects of introduction of combine harvester and flatbed dryer on milling quality of three glutinous rice varieties in Lao PDR
Effects of introduction of combine harvester and flatbed dryer on milling quality of three glutinous rice varieties in Lao PDR Open
Mechanization is required to increase labour productivity and improve grain quality for rainfed lowland rice in Lao PDR and neighbouring countries. An experiment was conducted in dry season in 2016 with three rice varieties and also in wet…
View article: Comparative analysis of farmers engaged in participatory research to cope with climate change versus non-participants in Northeast Thailand
Comparative analysis of farmers engaged in participatory research to cope with climate change versus non-participants in Northeast Thailand Open
To assess the extent of improvement of rainfed rice production by using a participatory approach, we compared research project participants and non-participants (total of 206 rice-growing households) with regard to yield variability and th…
View article: Effect of soaking medium on the physicochemical properties of parboiled glutinous rice of selected Laotian cultivars
Effect of soaking medium on the physicochemical properties of parboiled glutinous rice of selected Laotian cultivars Open
The effect of various soaking mediums, viz. water (control), 3% NaCl and 0.2% acetic acid, and without soaking on the physicochemical properties of parboiled selected glutinous (TDK8 and TDK11) and non-glutinous (Doongara) was investigated…
View article: <i>In situ</i> analysis of cooking properties of rice by thermal mechanical compression test method
<i>In situ</i> analysis of cooking properties of rice by thermal mechanical compression test method Open
A procedure for in situ analysis of rice cooking was developed in this study. Grain softening during soaking and cooking of selected rice varieties (fresh and aged TDK8, TDK11, and Doongara) were subjected to in situ analysis by using a th…