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Σελίδα 1 από 34 Αποτελέσματα
Effects of waterlogging on amyloplasts and programmed cell death in endosperm cells of Triticum aestivum L.
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The effects of waterlogging on amyloplasts and programmed cell death (PCD) in endosperm cells in Chinese wheat (Triticum aestivum L.; cv: Hua mai 8) are here discussed. Four water treatments were established from anthesis to maturity: they were 3 days of waterlogging treatment (DWT), 7 DWT, 12 DWT,
[The detection of nonallelic to known genes of resistance to Tilletia caries (DC) Tul. in wheat strains from interspecific hybridization (Triticum aestivum x Aegilops cylindrica)].
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It was established by hybridological analysis that winter bread wheat lines 1/74-91, 3/36-91, 5/55-91 possess single dominant gene of resistance to bunt (Tilletia caries (DC) Tul.), but lines 8/2-91, 5/43-91, 4/11-91 and 8/16-91 have two independent dominant genes for this character. These genes
Markers to a common bunt resistance gene derived from 'Blizzard' wheat (Triticum aestivum L.) and mapped to chromosome arm 1BS.
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Common bunt, caused by Tilletia caries (DC.) Tul. & C. Tul. and T. laevis J.G Kuhn, is an economically important disease of wheat (Triticum aestivum L.) worldwide. The resistance in the winter wheat cultivar 'Blizzard' is effective against known races of common bunt in western Canada. The
[Influence of Ca2+ ions on metabolism of active oxygen species in combined cultures of wheat calluses with the fungus Tilletia caries].
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The effect of Ca2+ on morphophysiological parameters of calluses of wheat Triticum aestovum L., the level of active oxygen species, and the activity of oxalate oxidase, peroxidase, and catalase is investigated in the case of infestation with the fungus Triticum aestivum causing ball smut. The
[Development of blunt Tilletia caries (D.C.) Tul. pathogen on embryogenic wheat callus].
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The development of Tilletia caries on embryogenic and morphogenic wheat calluses from germination of spores up to sorus formation have been investigated. Pathogene growth was similar in variants with wheat calluses of susceptible species Triticum aestivum and resistant species T. timopheevii, but
[Development of Tilletia caries (D.C.) Tul. in callus and suspension wheat cultures].
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All phases of ontogenesis of Tilletia caries were found in combined suspension and callus culture of the wheat and causative agent of common bunt of wheat. Newly formed spores were observed on calluses of the susceptible species Triticum aestivum and resistant species T. timopheevi within 90 and 120
Sucrose Release into the Endosperm Cavity of Wheat Grains Apparently Occurs by Facilitated Diffusion across the Nucellar Cell Membranes.
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Nutrients required for the growth of the embryo and endosperm of developing wheat (Triticum aestivum L.) grains are released into the endosperm cavity from the maternal tissues across the nucellar cell plasma membranes. We followed the uptake and efflux of sugars into and out of the nucellus by
Increased field resistance to Tilletia caries provided by a specific antifungal virus gene in genetically engineered wheat.
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The field performance of a viral gene in two Swiss wheat (Triticum aestivum) varieties showed 10% increased fungal resistance against Tilletia caries (stinking smut). To the best of our knowledge, this is the first report of improved resistance against any fungus in the field achieved by genetic
Accumulation and Conversion of Sugars by Developing Wheat Grains : VII. Effect of Changes in Sieve Tube and Endosperm Cavity Sap Concentrations on the Grain Filling Rate.
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The extent to which wheat grain growth is dependent on transport pool solute concentration was investigated by the use of illumination and partial grain removal to vary solute concentrations in the sieve tube and endosperm cavity saps of the wheat ear (Triticum aestivum L.). Short-term grain growth
Studies of the functional activity of mitochondria and cell ultrastructure of the coleoptile in wheat, Agropyron and their hybrids (incomplete amphidiploids) during decreasing temperature.
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The structure of the mitochondria and endoplasmic reticulum in the coleoptile of plants (Triticum aestivum var. Lutescens 329, Agropyron glaucum, Triticum × Agropyron 56-chromosome hybrids, incomplete amphidiploids, TAH, containing 42 wheat chromosomes and 14 chromosomes of genomes D or X of
[Effect of hydrogen peroxide on morphological characteristics and resistance of wheat calluses to the stinking smut fungus].
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We studied the effect of hydrogen peroxide on morphological characteristics and resistance of common wheat calluses (Triticum aestivum L.) to Tilletia caries Till. The induction of the defense response and morphogenesis in calluses depended on H2O2 concentration. A correlation was revealed between
Variation in mesophyll conductance among Australian wheat genotypes
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CO2 diffusion from substomatal intercellular cavities to sites of carboxylation in chloroplasts (mesophyll conductance; gm) limits photosynthetic rate and influences leaf intrinsic water-use efficiency (A/gsw). We investigated genotypic variability of gm and effects of gm on A/gsw among eleven wheat
Gradients in water potential and turgor pressure along the translocation pathway during grain filling in normally watered and water-stressed wheat plants.
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The water relations parameters involved in assimilate flow into developing wheat (Triticum aestivum L.) grains were measured at several points from the flag leaf to the endosperm cavity in normally watered (Psi approximately -0.3 MPa) and water-stressed plants (Psi approximately -2 MPa). These
Ice segregation in the crown of winter cereals: Evidence for extraorgan and extratissue freezing.
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Meaningful improvements in winter cereal cold hardiness requires a complete model of freezing behaviour in the critical crown organ. Magnetic resonance microimaging diffusion-weighted experiments provided evidence that cold acclimation decreased water content and mobility in the vascular transition
Sucrose Concentration Gradients along the Post-Phloem Transport Pathway in the Maternal Tissues of Developing Wheat Grains.
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Sucrose concentrations were measured in serial frozen sections of the post-phloem transport pathway in developing wheat (Triticum aestivum L.) grains. In normally importing grains, there was an approximately linear concentration gradient along the pathway, with a difference between the ends of the
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