Hydrogen Stable Isotope Analysis of Water Acquisition Ability of Deep Roots and Hydraulic Lift in Sixteen Food Crop Species(Crop Physiology and Ecology)
スポンサーリンク
概要
- 論文の詳細を見る
Deep root penetration, which allows access to deep soil water and hydraulic lift, may help plants to overcome drought stress. The aim of this study was to evaluate the ability of sixteen food crop species to take up water from deep soil layers and the extent of hydraulic lift by the use of deuterated water. Plants were grown in pots consisting of two loose soil layers separated by a hardpan and a Vaseline layer. The lower (deep) layers were always kept wet (32% ; ψ= -5 kPa), while soil moisture in the upper (topsoil) ones was adjusted to 25% (ψ= -7 kPa) and 12% (ψ= -120 kPa) in the well-watered and drought treatments, respectively. The deuterium labeling of the deep soil water provided evidence that wheat, Job's tears, finger mille, soybean, barnyard millet, rice, and rye (in decreasing order of D_2O increments) extracted more water from the deep layers under drought than well-watered in topsoil. These species showed significantly greater hydraulic lift under drought, except for soybean. Most of these species also showed increased root length density in deep soil layers and sustained high photosynthetic rates under drought. In contrast, pigeon pea, cowpea, common millet, pearl millet, foxtail millet, maize, barley, and oat did not show a significant increment in either deep-water uptake or hydraulic lift under drought. In summary, increased extraction of deep soil water under drought was closely related with the magnitude of hydraulic lift.
- 日本作物学会の論文
著者
-
Zegada-Lizarazu Walter
Graduate School of Bioagricultural Sciences, Nagoya University
-
Iijima Morio
Graduate School of Bioagricultural Sciences, Nagoya University
-
Iijima Morio
Graduate School Of Bioagricultural Sciences Nagoya University
-
Zegada-lizarazu Walter
Graduate School Of Bioagricultural Sciences Nagoya University
関連論文
- Water Acquisition from the Seasonal Wetland and Root Development of Pearl Millet Intercropped with Cowpea in a Flooding Ecosystem of Northern Namibia(Crop Physiology and Ecology)
- Effects of Common Soil Protozoa on the Growth of Rice(Abstract of Presentations at the 136th Meeting)
- The mucilage-border cell complex contributes to growth enhancement of rice plants through interactions with soil protozoa
- Mixed Planting with Legumes Modified the Water Source and Water Use of Pearl Millet(Crop Physiology and Ecology)
- Crop Production in Namibia : Present Situation and Perspectives
- Deep Root Water Uptake Ability and Water Use Efficiency of Pearl Millet in Comparison to Other Millet Species(Crop Physiology and Ecology)
- Productivity and Water Source of Intercropped Wheat and Rice in a Direct-sown Sequential Cropping System : The Effects of No-tillage and Drought(Crop Physiology and Ecology)
- Fractal and Multifractal Analysis of Cassava Root System Grown by the Root-Box Method
- Deep Rooting in Winter Wheat : Rooting Nodes of Deep Roots in Two Cultivars with Deep and Shallow Root Systems
- No-Tillage Enhanced the Dependence on Surface Irrigation Water in Wheat and Soybean(Crop Physiology and Ecology)
- Pearl Millet Developed Deep Roots and Changed Water Sources by Competition with Intercropped Cowpea in the Semiarid Environment of Northern Namibia(Crop Physiology and Ecology)
- Water Competition of Intercropped Pearl Millet with Cowpea under Drought and Soil Compaction Stresses(Crop Physiology and Ecology)
- Combined Soil Physical Stress of Soil Drying, Anaerobiosis and Mechanical Impedance to Seedling Root Growth of Four Crop Species(Crop Physiology and Ecology)
- Erosion Control on a Steep Sloped Coffee Field in Indonesia with Alley Cropping, Intercropped Vegetables, and No-Tillage
- Which Roots Penetrate the Deepest in Rice and Maize Root Systems?
- Maize-Soybean-Cowpea Sequential Cropping as a Sustainable Crop Production for Acid-Infertile Clay Soils in Indonesia(Agronomy)
- Cassava-Based Intercropping Systems on Sumatra Island in Indonesia : Productivity, Soil Erosion, and Rooting Zone(Agronomy)
- Root System Development Including Root Branching in Cuttings of Cassava with Reference to Shoot Growth and Tuber Bulking
- Structure and Function of the Root Cap
- Physiol-Morphological Analysis on Axile Root Growth in Upland Rice
- Root System Development of Cassava and Sweetpotato during Early Growth Stage as Affected by High Root Zone Temperature
- Interspecific differences in water uptake and water use efficiency of millets grown under water stresses
- Hydrogen Stable Isotope Analysis of Water Acquisition Ability of Deep Roots and Hydraulic Lift in Sixteen Food Crop Species(Crop Physiology and Ecology)
- A comparative study of deep root wwater uptake efficiency by different millet species
- Crop Production in Successive Wheat-Soybean Rotation with No-Tillage Practice in Relation to the Root System Development(Agronomy)