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  • Triticum aestivum  (13)
  • Springer  (13)
  • Oxford University Press
  • 1990-1994  (13)
  • 1965-1969
  • 1993  (13)
Collection
Keywords
Publisher
  • Springer  (13)
  • Oxford University Press
Years
  • 1990-1994  (13)
  • 1965-1969
Year
  • 1
    Electronic Resource
    Electronic Resource
    Effect of various metal ions on growth of two wheat lines known to differ in aluminium tolerance (1993)
    Springer
    Plant and soil 155-156 (1993), S. 489-492 
    Details
    ISSN: 1573-5036
    Keywords: aluminium ; analog ; boron ; copper ; gallium ; iron ; lanthanum ; manganese ; scandium ; tolerance ; Triticum aestivum ; toxicity ; wheat ; zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The effects of aluminium (Al), manganese (Mn), zinc (Zn), copper (Cu), boron (B), iron (Fe), gallium (Ga), scandium (Sc) and lanthanum (La) on growth of an Al-tolerant and an Al-sensitive line of wheat (Triticum aestivum L.) were measured in solution culture. The concentrations of nutrients in the basal nutrient solution were (μM) 500 Ca, 100 Mg, 300 K, 600 N (150 NH4, 450 NO3), 600 SO4, 2.5 P, 3 B, 2.5 Fe, 0.5 Zn, 0.5 Mn, 0.1 Cu at a pH of 4.7. The major solution nutrient concentrations were maintained at the nominal concentration with monitoring, frequent additions and weekly renewal. Differentiation in yield between the Al-tolerant and Al-sensitive line only occurred in the presence of Al indicating that, in the long term, none of the other metals tested could be used as an analog for Al. The visual symptoms in the roots of Cu toxicity (in both lines) and Al toxicity (in the sensitive line) were similar. The solution concentration (μM) at which yield of the roots of the tolerant line was reduced by 50% was, in order of increasing tolerance, Cu 0.5, Sc 1.1, La 7.1, Ga 8.6, Al 15, Zn 19, Fe 84, B 490 and Mn 600.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00025090
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  • 2
    Electronic Resource
    Electronic Resource
    Thinopyrum bessarabicum: biochemical and cytological markers for the detection of genetic introgression in its hybrid derivatives with Triticum aestivum L. (1993)
    Springer
    Theoretical and applied genetics 86 (1993), S. 365-370 
    Details
    ISSN: 1432-2242
    Keywords: Triticum aestivum ; Thinopyrum bessarabicum ; Protein-isozyme markers ; Chromosome banding ; Intergeneric hybridization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Thinopyrum bessarabicum (2n = 2x = 14, JJ) with its unique property of salt tolerance provides a potential means for the transfer of this important and complex trait into cultivated wheat through intergeneric hybridization. To accomplish this, diagnostic markers for detecting the presence of Th. bessarabicum chromosomes in a wheat background have to be established. The C-banded karyotype of Th. bessarabicum distinctly identifies individual Th. bessarabicum chromosomes and separates them from those of Triticum aestivum. Also, seven protein/isozymes, i.e., malate dehydrogenase, high-molecular-weight glutenin, Superoxide dismutase, grain esterase, glutamate oxaloacetate transaminase, β-amylase and α-amylase, were identified as being positive markers specific to Th. bessarabicum; these were also expressed in the T. aestivum/Th. bessarabicum amphiploid. These diagnostic biochemical markers could be useful in detecting and establishing homoeology of Th. bessarabicum chromosomes in T. aestivum/Th. bessarabicum intergeneric hybrid derivatives.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00222103
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  • 3
    Electronic Resource
    Electronic Resource
    Manganese nutrition and accumulation of phenolics and lignin as related to differential resistance of wheat genotypes to the take-all fungus (1993)
    Springer
    Plant and soil 151 (1993), S. 255-263 
    Details
    ISSN: 1573-5036
    Keywords: Gaeumannomyces graminis ; lignin ; manganese ; Mn-efficiency ; phenolics ; roots ; resistance mechanisms ; Triticum aestivum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Differential resistance of four Triticum aestivum L. genotypes to isolates of take-all fungus (Gaeuman-nomyces graminis var. ritici Walker) was tested in a complete factorial experiment set up in a growth chamber using Mn-deficient Wangary sand amended with four rates of Mn. Mn-efficient cultivars produced more dry matter at low supply of Mn. Fertilization with Mn significantly increased its accumulation in roots and shoots. The most sensitive measure of take-all infection was the total length of root stellar lesions; these lesions were reduced by Mn fertilization and were shorter in Mn-efficient genotypes. The resistance-enhancing effect of Mn was the most obvious in the Mn-inefficient genotype (Bayonet) and the least obvious in the Mn-efficient one (C8MM). Phenolics biosynthesis in roots was clicited by fungal infection, especially in the case of the highly virulent isolate. The weakly virulent isolate increased phenolics concentration in roots much more if no Mn was added, indicating that the resistance-enhancing effect of Mn may not be directly exerted through the effects on phenolics biosynthesis. Lignin concentration in roots decreased due to Mn fertilization, while no effect of take-all infection was noted. It appears that biosynthesis of phenolics and lignin in wheat roots has a low Mn requirement which can be satisfied at environmental Mn concentrations below those necessary for optimum plant growth. ei]Section editor: A C Borstlap ei]Section editor: H Lambers
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00016291
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  • 4
    Electronic Resource
    Electronic Resource
    Genotype-environment interaction and correlation between vegetative and grain production measures of potassium use-efficiency in wheat (T. aestivum L.) grown under potassium stress (1993)
    Springer
    Plant and soil 151 (1993), S. 39-44 
    Details
    ISSN: 1573-5036
    Keywords: efficiency ratio ; harvest index ; potassium ; Triticum aestivum ; utilization index ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Nutrient use-efficiency (NUE) is commonly measured in relation to vegetative growth without regard for economic productivity of crops whose valued product is reproductive. Although vegetative measures can be useful, particularly in forage crops, their validity in the quantification of NUE in grain crops is questionable. This study was undertaken primarily to examine the relationship between vegetative and economic potassium use-efficiency (KUE) in several wheat (T. aestivum) genotypes under conditions of potassium stress. Genotype environment interaction for vegetative KUE was also examined. Vegetative KUE was assessed as shoot fresh weight, efficiency ratio (VKER) and utilization index (VKUI) whereas economic KUE was evaluated as grain weight, total weight and economic efficiency ratio (EKER). Significant genotype-environment interactions for shoot weight, VKER and VKUI were observed. In some instances interaction was associated with crossovers between genotypes indicating that it can affect selection. Correlations between vegetative and economic measures of KUE were generally nonsignificant, but negative and significant for shoot weight of three-week-old plants and grain weight. It appears that if genotypes differ considerably for harvest index and it is not positively correlated with total biomass, vegetative measures of KUE are unreliable as indicators of economic KUE. Therefore, economic rather than vegetative measures should be used to evaluate KUE in crops whose valued product is reproductive. ei]{gnH}{fnMarschner} ei]{gnH.}{fnLambers}
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00010784
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  • 5
    Electronic Resource
    Electronic Resource
    The influence of NO3 - and NH4 + nutrition on the carbon and nitrogen partitioning characteristics of wheat (Triticum aestivum L.) and maize (Zea mays L.) plants (1993)
    Springer
    Plant and soil 154 (1993), S. 289-300 
    Details
    ISSN: 1573-5036
    Keywords: ammonium assimilation ; carbon partitioning ; nitrate assimilation ; nitrogen partitioning ; Triticum aestivum ; Zea mays
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The carbon and nitrogen partitioning characteristics of wheat (Triticum aestivum L.) and maize (Zea mays L.) grown hydroponically at a constant pH on either 4 mM or 12 mM NO3 - or NH4 + nutrition were investigated using either 14C or 15N techniques. Greater allocation of 14C to amino-N fractions occurred at the expense of allocation of 14C to carbohydrate fractions in NH4 +-compared to NO3 --fed plants. The [14C]carbohydrate:[14C]amino-N ratios were 1.5-fold and 2.0-fold greater in shoots and roots respectively of 12 mM NO3 --compared to 12 mM NH4 +-fed wheat. In both 4 mM and 12 mM N-fed maize the [14C]carbohydrate:[14C]amino-N ratios were approximately 1.7-fold and 2.0-fold greater in shoots and roots respectively of NO3 --compared to NH4 +-fed plants. Similar results were observed in roots of wheat and maize grown in split-root culture with one root-half in NO3 --and the other in NH4 +-containing nutrient media. Thus the allocation of carbon to the amino-N fractions occurred at the expense of carbohydrate fractions, particularly within the root. Allocation of 14N and 15N within separate sets of plants confirmed that NH4 --fed plants accumulated more amino-N compounds than NO3 --fed plants. Wheat roots supplied with 15NH4 + for 8 h were found to accumulate 15NH4 + (8.5 μg 15N g-1 h-1) whereas in maize roots very little 15NH4 + accumulated (1.5 μg 15N g-1 h-1) It is proposed that the observed accumulation of 15NH4 + in wheat roots in these experiments is the result of limited availability of carbon within the roots of the wheat plants for the detoxification of NH4 +, in contrast to the situation in maize. Higher photosynthetic capacity and lower shoot: root ratios of the C4 maize plants ensure greater carbon availability to the root than in the C3 wheat plants. These differences in carbon and nitrogen partitioning between NO3 --and NH4 +-fed wheat and maize could be responsible for different responses of wheat and maize root growth to NO3 - and NH4 + nutrition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00012534
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  • 6
    Electronic Resource
    Electronic Resource
    Development of an ELISA for estimation of the copper nutritional status of wheat and cotton (1993)
    Springer
    Plant and soil 155-156 (1993), S. 453-456 
    Details
    ISSN: 1573-5036
    Keywords: copper deficiency ; cotton ; ELISA ; Gossypium hirsutum ; immunoassay ; Triticum aestivum ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Studies were carried out with hydroponically grown wheat and cotton to develop the Cu-requiring protein phenolase as a biomarker of Cu nutrient status. Isozymes of phenolase whose levels were reduced by Cu deficiency were identified by Western blots. A competitive enzyme-linked, immunosorbent assay (ELISA) was developed that could detect as little as 25 ng of phenolase. The ELISA revealed that Cu-sufficient cotton leaves had about 4-fold more phenolase antigen than did Cu-sufficient wheat leaves. In both species, the level of phenolase was reduced by 2- to 5-fold in leaves of Cu-deficient plants. Because the immunoassay for phenolase protein is rapid, inexpensive, and can be carried out with small amounts of leaf material, it has potential as a tool for assessment of the Cu status of crop plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00025081
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  • 7
    Electronic Resource
    Electronic Resource
    Monosomic analysis of Russian wheat aphid (Diuraphis noxia) resistance in Triticum aestivum line PI137739 (1993)
    Springer
    Euphytica 74 (1993), S. 117-120 
    Details
    ISSN: 1573-5060
    Keywords: Russian wheat aphid ; Diuraphis noxia ; wheat ; Triticum aestivum ; monosomic analysis ; resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The Russian wheat aphid, Diuraphis noxia (Mordvilko) (Homoptera: Aphididae), has become an important pest of wheat (Triticum aestivum L.) in the United States. The aphid causes a phytotoxemic reaction in wheat evidenced by local and systemic chlorosis and rolling of infested leaves. Developing resistance in wheat cultivars to D. noxia is an essential factor in controlling the damage caused by this pest. Several sources of genetic resistance to D. noxia have been identified in wheat germplasm. Monosomic analysis of the monogenic resistant T. aestivum accession PI137739 has shown that the gene (Dn1) for resistance is carried on chromosome 7D. It appears that chromosome 7B may carry a second resistance gene for D. noxia that might be a source of minor or complementary gene action for resistance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00033775
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  • 8
    Electronic Resource
    Electronic Resource
    The contribution of different regions of the seminal roots of wheat to uptake of nitrate from soil (1993)
    Springer
    Plant and soil 155-156 (1993), S. 155-158 
    Details
    ISSN: 1573-5036
    Keywords: nitrate uptake ; root activity ; Triticum aestivum ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A technique was developed to determine the physiological activity of defined sections of seminal roots of wheat grown in sand. Wheat plants were grown for 2 weeks in narrow columns of N-deficient sand to which all other nutrients had been added. The columns were split longitudinally and 15N-labelled nitrate, in an agar medium, supplied to 2 cm sections of root. Shoots and roots were analysed after 24 h to determine the uptake of 15N. Three sections were examined on either the secondary or tertiary seminal root: 1 cm from the seed (basal segment), 35 cm from the seed (middle segment) and 4 cm from the root apex (apical segment). Total uptake was greatest from the basal and middle segments, declining by 50% from the apical segment. However, uptake per unit root length, including exposed sections of lateral roots, was not significantly different along the root.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00025007
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  • 9
    Electronic Resource
    Electronic Resource
    Inhibitory effect of parthenium (Parthenium hysterophorus L.) residue on growth of water hyacinth (Eichhornia crassipes Mart Solms.) II. Relative effect of flower, leaf, stem, and root residue (1993)
    Springer
    Journal of chemical ecology 19 (1993), S. 2663-2670 
    Details
    ISSN: 1573-1561
    Keywords: Parthenium hysterophorus ; Eichhornia crassipes ; Triticum aestivum ; biomass ; inhibitory activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The relative effect of residue of leaf, flower, stem, and root of parthenium (Parthenium hysterophorus L.) on growth of water hyacinth was studied. The inhibitory activity of the residue as shown by its effect on biomass and healthy leaf number (HLN) of treated plants was in the order: leaf and flower 〉stem 〉root. Total phenolic acids in the medium after 72 hr of suspending the plant part residue were maximum in flower followed by leaf, root, and stem, successively. The dry leaf powder (DLP) and dry flower powder (DFP) at and above 0.50% (w/v) and dry stem powder (DSP) at 1.00% (w/v) killed water hyacinth in about one month. Dry root powder (DRP) at the highest dose (1.25% w/v) reduced the growth of the treated plants drastically, but the plants recovered after about one month. The DSP at 0.50% (w/v) and DRP at 0.25–0.75% (w/v) supported growth of treated plants, probably due to lower levels of inhibitors, allowing utilization of constituents of the residue as nutrients. Using wheat seedlings as a reference material, it was observed that in aquaculture at different levels of parthenium plant parts residue, water hyacinth plants were much more sensitive to inhibitory activity. Thus, water hyacinth is suggested as a material for bioassay of inhibitory activity of the parthenium plant residue.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00980699
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  • 10
    Electronic Resource
    Electronic Resource
    Allelic variation at Glu-1 loci in some Yugoslav wheat cultivars (1993)
    Springer
    Euphytica 69 (1993), S. 89-94 
    Details
    ISSN: 1573-5060
    Keywords: electrophoresis ; glutenins ; alleles ; sedimentation value ; wheat ; quality score ; high molecular weight glutenins ; Triticum aestivum ; Yugoslavia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The high molecular weight (HMW) subunits of glutenin extracted from flour of 36 Yogoslav wheat cultivars were separated by SDS-PAGE to identify their alleles, and the frequency of each allele was calculated. Eleven alleles from the three Glu-loci were recognized, three at the Glu-A1 locus, six at the Glu-B1 locus and two at the Glu-D1 locus. The most frequent allele was “a” (55.5%) from Glu-D1, which controls synthesis of subunits 2+12. The Glu-1 quality score varied from 4 (KG-III/27, KG-75, Morava and KG-101/7) to 10 (Lepenica). The mean Glu-1 quality score of cultivars and lines from Kragujevac was 6.8, for cultivars from Zagreb 7.2, and for cultivars from Novi Sad was 7.9. Most of the genotypes with a quality score of 8 or above, had high sedimentation values (Zeleny test). There were no significant differences in allelic composition at the Glu-1 loci among wheat genotypes from Kragujevac, Novi Sad and Zagreb.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00021730
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