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Analysis on Root System Morphology in Rice with Reference to Varietal Differences at Ripening Stage
Nodal roots 0ryza sativa L Root depth index Root distribution Root length Root weight
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2009/7/28
The morphology of the rice root system was established by analyzing varietal differences. Four rice varieties, Koshihikari, Dobashi 1, IR36 and Lemont, were grown in an experimental paddy under ordina...
Changes with Aging of Endogenous Abscisic Acid and Zeatin Riboside in the Root System of Rice
Abscisic acid Aging Enzyme immunoassay Lateral roots Oryza sativa L Seminal root system
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2009/7/28
Plant roots produce abscisic acid (ABA) and zeatin riboside (ZR) which are known to counteract the aging of plant organs. Changes in ABA and ZR levels were determined by an enzyme immunoassay method i...
Effects of Light Conditions during Nursery Period on the Characters of Rice Nurseling Seedlings, Their Taking Root and Early Growth after Transplanting
Character of seedling Early growth Light condition Raising of seedling Remaining percentage of endosperm Rice nurseling seedling
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2009/7/27
Rice nurseling seedlings were raised under temperature-controlled condition (32°C) in darkness or with illumination of 500lux (Exp.1) and 170lux (Exp.2) by fluorescent lamp for 1, 2 and 4 days before ...
Effects of Nursery Temperature on the Growth of Rice Nurseling Seedlings Raised in Darkness
Coleoptilar nodal root Growing process Non-greening nurseling seedling Nursery temperature
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2009/7/27
Effects of nursery temperature (20, 25, 32 and 37°C) under dark conditions on the growth of the rice non-greening nurseling seedlings and growing process of the seedlings raised under dark and around ...
Morphological Characterization of the Seedlings of Short-root Mutant LM10 Selected from Rice (Oryza sativa L., cv. IR8)
Mutant Oryza sativa L Photomorphogenesis Rice Root Short-root
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2009/7/27
We report the characterization of seedlings of LM10 which is one of the four short-root mutants derived from an M2 population of rice (Oryza sativa L., cv. IR8) seeds treated with NaN3. The morphologi...
Studies on the Formation of the Crown Root Primordia of Rice Plant:II. Formation of the crown root primordia in thc lower part of unelongated stem
Crown root primordia Internode Nodal root Node Oryza sativa L Peripheral cylinder of longitudinal vascular bundle Unelongated stem
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2009/7/27
The position and the number of crown root primordia in the lower portions of the unelongated stem (below around the 4th node) of rice plant were investigated microscopically using seedlings of a culti...
Effects of Mixed Coating of Oxygen Generating Chemicals and Several Kinds of clay on Seedling Emergence in Direct Sowing of Paddy Rice
Calcium peroxide Clay Emergence of seedling Direct sowing into flooded soil Soil oxidation Paddy rice
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2009/7/27
The effects of mixed coating of seed with oxygen-generating chemicals containing 16% calcium peroxide (CaO2) and clay on the seedling emergence of rice (Oryza sativa L.) from flooded soil were examine...
Regularity in Variation of Leaf Color and Nitrogen Distribution in Half-Leaf Blades by Leaf Position on the Stems of Rice Plants:II. Uneven translocation of nitrogen between outside and inside half-leaves
Chlorophyll meter value Distribution Half-leaf blade Leaf blade width Nodal root Translocation
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2009/7/27
We have reported in a previous paper that the outside half-leaf had a smaller volume and deeper leaf color than the inside half-leaf. The half-leaf color was not dependent only on the difference in le...
Analysis of Plant Characteristics Determining Ear Weight Increase during the Ripening Process in Rice (Oryza sativa L.) : I. Plant characteristics determining the sink capacity of spikelets
Culm length Paddy rice Panicle number Percentage of productive tillers Sink capacity of spikelets Tiller number at maximum tillering stage
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2009/7/24
The research was conducted to analyze the relationships between sink capacity expressed by hull weight per hill (SW) and culm length (CL) and weight of hulls per panicle (hW, ). hW and CL were adopted...
Quantitative Trait Loci for Rice Phyllochron in Lemont × IR36 Cross
Leaf Phyllochron QTL Rice
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2009/7/24
In rice, genetic variation in “phyllochron”(the time interval between the appearance of successive leaves) affects many aspects of shoot system development. The objective of our study was to identify...
Breeding and Cultivation of Aromatic Rice and Sake-brewing Rice in Kochi Prefecture
Breeding Cultivation Aromatic Rice Sake-brewing Rice
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2009/7/24
Breeding and Cultivation of Aromatic Rice and Sake-brewing Rice in Kochi Prefecture.
Correlation between Viability of Pollination and Length of Basal Dehiscence of the Theca in Rice under a Hot-and-Humid Condition
Dehiscence of anther Flowering High temperature Hot-and-humid condition Pollination Rice Tolerance
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2009/7/24
Anticipated global warming may increase the floret sterility of rice (Oryza sativa L.). For selection of genotypes tolerant to high temperatures during the flowering period, it is important to identif...
Relationship between Export Rate of Photoassimilates and Activation State of Sucrose Phosphate Synthase in Submerged Floating Rice
Export rate of photoassimilates Floating rice Sucrose phosphate synthase
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2009/7/23
Floating rice (Oryza sativa L.) responds to submergence by rapid internodal elongation. This stimulated growth needs an increase in the supply of photoassimilates. We investigated the effects of subm...
Growth Respiration in Rice Organs as Affected by Nitrogen Content
Growth coefficient Growth respiration Nitrogen content Rice
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2009/7/23
The relationship between growth respiration and nitrogen content in rice organs was investigated. Top and root CO2 exchange rates were continuously measured for 5-6 days under different nutrient conce...
Seedling Establishment of Rice Sown on Soil Surface in Flooded Paddy Field : I. Varietal difference in seedling establishment
Direct seeding Establishment Floating seedling Flooded paddy field Rice Seedling establishment
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2009/7/23
Field experiments were carried out to clarify the differences and key factors in the rate of seedling establishment among rice varieties sown on the soil surface in flooded paddy fields. The percentag...