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  • Artikel  (6.842)
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  • Blackwell Publishing Ltd  (6.842)
  • Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft  (6.842)
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  • Artikel  (6.842)
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  • 1
    Digitale Medien
    Digitale Medien
    Helminthosporium leaf blight resistance and agronomic performance of wheat genotypes across warm regions of South Asia (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 123 (2004), S. 0 
    Details
    ISSN: 1439-0523
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Helminthosporium leaf blight (HLB) is the most important disease constraint to wheat (Triticum aestivum L.) cultivation in the eastern Gangetic Plains of South Asia. A Helminthosporium Monitoring Nursery (HMN) including potential adapted and exotic sources of HLB resistance was developed in Bangladesh, India and Nepal to assess the stability of genetic resistance across locations. The 8th, 9th and 10th HMN assessed the HLB resistance and agronomic traits of 17 wheat genotypes across 20 environments of Bangladesh, India and Nepal in the 1999-2000, 2000-2001 and 2001-2002 cropping seasons, respectively. The area under the disease progress curve (AUDPC) for HLB, grain yield, thousand-kernel weight (TKW), days to heading, days to maturity, and plant height were examined. The 17 genotypes showed a range of variability for disease and agronomic characters. Disease severity (AUDPC) differed in the 3 years and showed the highest values in 2002. The increase in AUDPC in 2002 caused the lowest grain yield, with an average 18% reduction due to HLB. A few genotypes (SW 89-5422, Yangmai-6 and Ning 8201) appeared to have stable HLB resistance across environments. However, most of the higher-yielding genotypes, except BL 1883, were unstable. The results suggest that careful selection of HLB resistance with acceptable grain yield, TKW and plant height may be possible using the wheat genotypes included in the HMN.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1439-0523.2004.01006.x
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  • 2
    Digitale Medien
    Digitale Medien
    QTL analysis of Cercospora leaf spot resistance in sugar beet (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 118 (1999), S. 0 
    Details
    ISSN: 1439-0523
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: The inheritance of Cercospora leaf spot resistance in sugar beet was investigated by means of quantitative trait loci (QTL) analysis of a segregating population of 193 individuals, using 110 AFLP and 35 restriction fragment length polymorphism (RFLP) markers. Five QTL were found through composite interval mapping on linkage groups 1, 2, 3, and 9, respectively, two of which were linked on linkage group 3. The significance of these QTL was tested by permutation analysis The QTL had mostly additive, but also certain negative dominance effects; all the resistance alleles came from the Cercospora-resistant parent. Each quantitative trait locus accounted for 7-18% of the phenotypic variation, leaving 37% of the variation unexplained. The results are discussed in relation to the potential use of marker-assisted breeding for Cercospora leaf spot resistance in sugar beet.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1439-0523.1999.00390.x
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  • 3
    Digitale Medien
    Digitale Medien
    Effect of eight herbicides from five different chemical groups on nitrogen fixation and grain yield in Lupinus albus L. grown in semi-arid zones (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 29 (1989), S. 0 
    Details
    ISSN: 1365-3180
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary. The effects of five different chemical groups of herbicides: dinitroanilines, 1, 3, 5-triazines, 1, 2, 4-triazinones, α-chloroacetamides and carbamates on N2-fixation & yield in Lupinus were compared. Cyanazine, simazine and trifluralin caused a significant increase in acetylene reduction activity (ARA), whereas the rest had no effect on ARA. Cyanazine and simazine significantly increased the grain yield and the weight of lupin seeds. The percentage of nitrogen in the seeds was significantly increased by cyanazine. An inventory of the weeds resistant to the herbicides in the treated subplots was also carried out. The dinitroaniline group mainly controlled Galium tricorne, Lolium multiflorum, Papaver rhoeas, and Avena sterilis whereas the 1, 3, 5-triazine and dinitroaniline herbicides. Carbamates and α-chloroacetamides were less effective Papaver rhoeas, Scandix pecten-veneris and Avena sterilis. Avena sterilis was controlled by both triazine and dinitro-aniline herbicides. Carbamates and α-chloroacetamides were less effective on the weeds growing with the lupinus plants.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-3180.1989.tb01313.x
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  • 4
    Digitale Medien
    Digitale Medien
    Effect of temperature on the hatching success of the eggs of Japanese whiting, Sillago japonica Temminck & Schlegel, during the spawning season (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 22 (1991), S. 0 
    Details
    ISSN: 1365-2109
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract. Hatching responses of the Japanese whiting, Sillago japonica Temminck et Schlegel, to a series of temperature changes were measured by exposing the fertilized eggs to eight constant incubation temperatures which ranged from 20·0 to 34·0°C. For a control, hatching temperature was kept the same as temperature of the ambient environment. Hatching responses were expressed as hatching percentages. Altogether 18 experimental trials were conducted during the natural spawning season of the species which extended over a period of 2 months from late July to mid-September 1988, when seawater temperature varied between 24·0 and 30·0°C. Optimum and limiting temperatures were recorded and the data were optimally fit to the quadratic model. Results indicated that viable hatch occurred at almost all ranges of hatching temperature from 22·0 to 32·0°C. However, no hatching was recorded at either 20·0 or 32·0°C. The experiment showed that the optimum hatching temperature varied with the ambient temperature changes during the spawning season, indicating the latter to be a dependent factor for any hatching success.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2109.1991.tb00521.x
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  • 5
    Digitale Medien
    Digitale Medien
    Differential effects of isoproturon on the photosynthetic apparatus and yield of two varieties of wheat and L. rigidum (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 28 (1988), S. 0 
    Details
    ISSN: 1365-3180
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: The effect of isoproturon on the ultrastructure of the photosynthetic apparatus, ribulose bisphosphate carboxylase activity, protein and chlorophyll content, and the grain yield was investigated in two wheat cultivars (Triticum sativum L. cvs Castan and Esquilache) and a weed (Lolium rigidum Gaud.). Field experiments used applications of 1–65 and 2–5 kg a.i. ha−1 isoproturon post-emergence, and growth chamber experiments used nutrient solution with the addition of isoproturon (1·7 × 10−4 M). The ultrastructure of the photosynthetic apparatus of the cv. Esquilache was much affected by the herbicide. In the case of cv. Castan, slight disorganization of the grana and intergrana was observed. Isoproturon decreased the activity of ribulose bisphosphate carboxylase. A decrease in protein and chlorophyll content was also observed in the cv. Esquilache and in L. rigidum. These alterations were much less evident in the cv. Castan, where, moreover, no loss of protein occurred. The yield of the treated cv. Castan plants was slightly greater than that of the control plants in two consecutive years. However, the yields of the cv. Esquilache were significantly less when the herbicide was applied in the first year at commencement of tillering in a dry season but not when applied at an advanced stage as in the second year in a wet season.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-3180.1988.tb00790.x
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  • 6
    Digitale Medien
    Digitale Medien
    Soil and land use effects on phosphorus in six streams draining small agricultural catchments in Scotland (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 13 (1997), S. 0 
    Details
    ISSN: 1475-2743
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Geologie und Paläontologie , Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract. Phosphorus concentrations and outputs have been compared and contrasted in six small agricultural catchments in the west and northeast of Scotland. The loss of P from soils to stream waters was more from catchments with intensive dairy cattle farming in the west than from the less intensively stocked/arable catchments in the northeast, with striking differences being seen between the two regions. In the northeast, intensive animal farming caused less P loss in drainage water than arable management.Larger mean annual concentrations were seen in the west (0.076-0.142 mg PO4-P/l as molybdate-reactive phosphate–MRP) compared with the northeast (0.012-0.025 mg PO4-P/l), a feature caused by the combination of limited P-retention in the western Gleysols and smaller inputs to the largely-podzolic northeastern catchments. Stream concentrations were decreased by dilution during winter storm flows and increased during summer baseflow and at the beginning of soil rewetting in autumn.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1475-2743.1997.tb00586.x
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  • 7
    Digitale Medien
    Digitale Medien
    Mapping antixenosis genes on chromosome 6A of wheat to greenbug and to a new biotype of Russian wheat aphid (2005)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 124 (2005), S. 0 
    Details
    ISSN: 1439-0523
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Greenbug and Russian wheat aphid (RWA) are two devastating pests of wheat. The first has a long history of new biotype emergence and recently. RWA resistance has just started to break down. Thus, it is necessary to find new sources of resistance that will broaden the genetic base against these pests in wheat. Seventy-five doubled haploid recombinant (DHR) lines for chromosome 6A from the F1 of the cross between “Chinese Spring’ and the “Chinese Spring (Synthetic 6A) (Triticum dicoccoides × Aegilops tauschii)” substitution line were used as a mapping population for testing resistance to greenbug biotype C and to a new strain of RWA that appeared in Argentina in 2003. A quantitative trait locus (QTL) (br antixenosis to greenbug was significantly associated with the marker loci Xgwm1009 and Xgwm1185 located in the centromere region of chromosome 6A. Another QTL which accounted for most of the antixenosis against RWA was associated with the marker loci Xgwm1291 and Xiinni1150. both located on the long arm of chromosome 6A. This is the first report of greenbug and RWA resistance genes located on chromosome 6A. It is also the first report of antixenosis against the new strain of RWA. As most of the RWA resistance genes present in released cultivars have been located in [he D-genome, it is highly desirable to find new sources in other genomes to combine the existing resistance genes with new sources.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1439-0523.2005.01082.x
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  • 8
    Digitale Medien
    Digitale Medien
    Interdependence Between Heat Solubility and Pyridinoline Contents of Squid Mantle Collagen (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 66 (2001), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: : A considerable amount of squid mantle collagen, 45% to 70% of total collagen, was not solubilized even after 30 min of heating in boiling water with its fibrous structure left intact. Pyridinoline, one of the major intermo-lecular crosslinks in matured collagen, was more predominantly included in the insoluble collagen than in the soluble one (p 〈 0.05). These results suggest that pyridinoline is closely related to the heat solubility of squid collagen.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.2001.tb11329.x
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  • 9
    Digitale Medien
    Digitale Medien
    Texture Changes Associated with Insolubilization of Sarcoplasmic Proteins During Salt-vinegar Curing of Fish (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 64 (1999), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The effect of salt-vinegar curing on mackerel meat was investigated. In salt curing, the firmness of the meat increased concomitantly with the decrease in water content and the increase in insolubilization of sarcoplasmic protein of phosphorylase. In subsequent vinegar curing, the firmness and cohesiveness of the meat increased concomitantly with the increase in insolubilization of the sarcoplasmic proteins of enolase, creatine kinase, aldolase, and glyceraldehydephosphate dehydrogenase. No apparent proteolytic breakdown was detected in the salt-vinegar curing. The findings suggested that the precipitation of substantial amounts of sarcoplasmic proteins might contribute to the texture change caused by salt-vinegar curing.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.1999.tb15916.x
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  • 10
    Digitale Medien
    Digitale Medien
    Genetic analysis of Lolium. I. Identification of linkage groups and the establishment of a genetic map (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 117 (1998), S. 0 
    Details
    ISSN: 1439-0523
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: A genetic map of Lolium has been produced using isozyme, restriction fragment length polymorphism (RFLP) and random amplified polymorphic DNA (RAPD) markers applied to a segregating family derived from an F1 hybrid plant of L. perenne × L. multiflorum provenance, crossed on to a doubled haploid L. perenne. A total of 106 markers, out of a total of 160 polymorphic loci analysed, have been ascribed to seven linkage groups covering a map distance of 692cM, Two of these groups may be allocated to chromosomes 2 and 6 of the Lolium genome.The remaining unallocated markers, the majority of which showed severe segregation distortion, could be associated into small groups of two or three markers which showed no linkage with the main groups at a LOD of 2.8 or, if associated, could not be mapped in a satisfactory manner. This high incidence of disturbed segregations could be accounted for by the use of an interspecific hybrid between two species of differing genome size, with consequent cytological imbalance.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1439-0523.1998.tb01972.x
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