搜索结果: 1-15 共查到“作物栽培学 Oryza sativa”相关记录32条 . 查询时间(0.268 秒)
白建江（2021）SLAF-Based linkage map construction and QTL mapping of nitrogen use efficiency in rice (Oryza sativa L.) （图）
氮素 水稻 Nipponbare OM052 氮肥利用率
2023/2/27
氮素是植物生长发育所需的大量元素之一，水稻是我国的主要粮食作物，水稻生产对氮的需求仅次于水，是构成水稻生长成本的主要部分。目前，水稻氮肥表观利用率只有39%，即施氮肥量的50%以上残留在环境中。因此，在保证产量不减的基础上如何提高氮肥的利用效率，减少氮肥的使用量是我国农业可持续发展亟待解决的重要问题。
Ultrastructure of Inoculated Anthers in Relation to the Frequency of Induction of Pollen Callus in Anther Culture of Oryza sativa L
Anther Culture Oryza sativa L Rice Ultrastructure
2009/8/6
The formation of pollen callus was induced when rice anthers, which contained microspores in the mid-uninucleate and late-uninucleate stage, were cultured. The ultrastructure of the microspores was al...
Effects of Different Rhizosphere Sizes on the Growth, Distribution Patterns and Utilization of Nitrogen Fertilizer in Rice Plant(Oryza Sativa L.)
Oryza sativa L Recovery of Nitrogen Rhizosphere Size
2009/8/6
This study was carried out to clarify the effect of controlled rhizophere sizes on various characteristics of each organ at the heading and maturing stage in paddy rice plants (Oryza sativa L., cv. N...
Growth Response of Rice (Oryza sativa L.) to Drought:II. Varietal difference in transpiration under water stress and its related plant characteristics
Drought tolerance Humidity Leaf-water content Rice Sugar content Transpiration Varietal
2009/8/5
Transpiration of a rice plant under a low water potential of rooting medium and low air-humidity conditions was studied in order to evaluate varietal difference in response to water stress. Water stre...
Fluctuation of Ethylene Production in Excised Panicles and Flag Leaf Blades during Grain Ripening in Rice (Oryza sativa L.)
Ethylene production Flag leaf blade Milk-ripe stage Oryza sativa L Panicle Plant growth regulator
2009/8/4
Ethylene production and its fluctuation in panicles and flag leaf blades in the rice plant (Oryza sativa L.) during the grain ripening stage were examined. The effect of plant growth regulators (grow...
Responses of Dry Matter Production and Photosynthesis in Oryza glaberrima Steud. and Oryza sativa L. Introduced from West Africa to the Concentrations of Culture Solution
Africa Dry matter production Fertilizing effect Oryza glaberrima Steud Oryza sativa L
2009/8/4
To elucidate the dry matter productivity of O. glaberrima introduced from West Africa, the responses of several main growth parameters and photosynthetic rate to fertilizing levels were compared with ...
Variation of the Dark Respiration Rate of Tissues and Organs of Rice (Oryza sativa L.) with Differential Physiological Age and Causal Factors
Age Dark respiration Michaelis-Menten equation Nitrogen Carbohydrate Respiration
2009/7/31
Variation of the specific rate of dark respiration (mgCO2 g dry wt. -1h-1 measured at 29°C, Rs) with the age of the tissues and organs of rice cv. Suweon 258 and Nona Bokra, grown in the favorable fie...
Response of Leaf Water Potential of Rice (Oryza sativa L.) to Evaporative Demand under Paddy Field Conditions:II. Relationship between response and yield
Evaporative demand Grain yield Leaf water potential Location Radiation Spikelet number
2009/7/31
We observed previously (Part 1) that maintenance ability of leaf water potential (Ψ1) in rice plants under paddy field conditions changed depending on planting years and seasons and individual locatio...
Response of Leaf Water Potential of Rice (Oryza sativa L.) to Evaporative Demand under Paddy Field Conditions : I. Changes with plant development
Evaporimeter Evaporative demand Growth stage Leaf water potential
2009/7/31
Because the leaf water potential (Ψ1) of the rice plant (Oryza sativa L.) is strongly affected by the evaporative demand of the atmosphere under paddy field conditions, and most changes in Ψ1 reflect ...
Growth of an Annual Strain of Oryza glaberrima Steud. and a Perennial Cultivar of Oryza sativa L. after Heading
Annual Food reserves Harvest index Monocarpic annual Oryza glaberrima Steud
2009/7/31
The growth of W492 (an annual strain of Oryza glaberrima Steud.) and Koshihikari (a perennial cultivar of Oryza sativa L.) after heading were compared to determine the growth characteristics of annual...
Effects of Water-Saving Irrigation and Nitrogen Fertilization on Yield and Yield Components of Rice (Oryza sativa L.)
Nitrogen application Rice Sprinkler intermittent irrigation Water use efficiency
2009/7/29
The effects of nitrogen (N) application (32, 72 and 112 kg N ha-1 in 2000, and 32, 92 and 152 kg N ha-1 in 2001) and water-saving irrigation and their interaction on grain yield and yield components o...
Relationships between Vascular Bundles of Panicle Neck Internode and Characters of Head under Different Planting Densities and Nitrogen Fertilizers Applied in Oryza sativa L.
Fertilizer Grains Large vascular bundles 0ryza sativa L Panicle neck internode
2009/7/28
Investigations were carried out on the characters of rachilets, grains and grain weight per panicle of the growing rice plant cv. Shimokita under different planting density and nitrogen fertilizer no...
Growing Patterns of Rice Plant (Oryza sativa L. cv. Koshihikari) Corresponding to Developmental Index to Produce Different Numbers of Spikelets
Developmental index Growing patterns Koshihikari Nitrogen content of plant Number of spikelets
2009/7/27
Plant length, tiller number and nitrogen content of rice plant (Oryza sativa L. cv. Koshihikari) having produced five different levels of spikelet numbers were computed by averaging data obtained in ...
Effects of Deep Water Treatment on the Growth of Culms and the Lodging Resistance in Japonica Type Paddy Rice (Oryza sativa L.) Cultivars
Breaking strength Deep water treatment Internode Lodging resistance Lysigenous aerenchyma
2009/7/27
We carried out this experiment to clarify the growth of culms of Japonica type rice cultivars under deep water conditions with special reference to lodging resistance of culms. We used four Japonica ...
Effects of Planting Density on Growth and Distribution of Roots in Rice Plants (Oryza sativa L.)
Crown root Oryza sativa L Planting density Root system Top-root ratio
2009/7/24
Effects of planting density on the formation of the root system and the relative growth of the top and root in rice plants were investigated. The four planting densities used were 45, 70, 95 and 120 h...