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  • Blackwell Publishing Ltd  (8)
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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 122 (2003), S. 0 
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A genetic linkage map based on an intraspecific cross between two inbred lines of witloof-chicory (Cichorium intybus L. var. foliosum Hegi) has been constructed. In total, 129 RAPD markers were scored in 565 F2 plants. Grouping of these markers at a LOD of threshold 4.0 resulted in nine linkage groups, which is equal to the chicory haploid genome. The nine linkage groups covered 609.6 cM. All 129 RAPD markers were linked to one of the nine groups. Three RAPD markers could not be mapped. Out of the 126 remaining RAPD markers, 18 showed segregation distortion with significance value of P 〈 0.01.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: One-hundred and twenty-four amplified fragment length polymorphism (AFLP) and 49 random amplified polymorphic DNA (RAPD) markers have been used to distinguish between 20 and 23 commercial chicory cultivars, respectively. These were all Cichorium intybus var. foliosum F1 hybrids, currently used in hydroponic forcing. Five-hundred and twenty RAPD primers (OPERON) were tested, of which 156 resulted in reproducible patterns and 26 yielded polymorphisms. Two-hundred and fifty-six AFLP primer-combinations were tested and six combinations were selected for identification purposes. Similarity indices were measured and clustering has been done using pairwise comparison. Both types of marker provide similar conclusions. Two major clusters are formed, representing late and early cultivars. All cultivars were identified using 10 informative RAPD primers or three AFLP primer combinations. A low degree of polymorphism was detected between some early cultivars, suggesting a narrow genetic base in their breeding strategy.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 124 (2005), S. 0 
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The genetic basis of pith characteristics in chicory (Cichorium intybus L. var. foliosum Hegi) was investigated. Quantitative trait loci (QTL) were mapped in an F2 population (565 F2 plants) derived from a cross between two inbred chicory lines. A molecular marker linkage map of this cross had previously been constructed based on 129 random amplified polymorphic DNA markers. Each F2 plant was selfed and plant characteristics were measured in the F3 populations. Although variation in pith characteristics was largely environmentally influenced, QTL for the characteristics length of pith, browning of the pith, hollow pith and apple pith were detected in many linkage groups. Interactions between QTL were found for the three characteristics: pith length, browning of the pith and hollow pith. The QTL detected confirmed the early forcing suitability of the one parent inbred line and late forcing suitability of the other.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 120 (2001), S. 0 
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The phylogenetic relationship between different Cichorium intybus cultivars and cultivar groups was studied. A total of 127 random amplified polymorphic DNA markers have been used to distinguish between 51 Cichorium intybus cultivars belonging to three different cultivar groups. A principal component analysis was performed on the complete data set and a clear grouping of chicory cultivar groups was observed. The three chicory groups tested (root chicory, witloof and pain de sucre) were separated from one another in the principal component plots. The first two axes accounted for 43.9% of the total variation. Although the chicory used in traditional forcing in soil and the red chicory cultivars were related more to each other and to the chicory cultivars from the witloof group, they still formed separate groups in the principal component plot.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 56 (1982), S. 0 
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The ethylene evolution from 3 cm-long flower buds of Lilium X ‘Enchantment’ increased when the plants were placed in darkness. Also shortening the daily light period led to an increase in ethylene evolution from the buds. Dark-enhanced ethylene evolution could only be evoked in flower buds between 2 and 3.5 cm long. Flower bud abscission induced by dakrness could be prevented by injecting silver thiosulphate into the flower buds, or by using plants grown from bulbs previously immersed in a silver thiosulphate solution. It is suggested that light-controlled flower bud abscission in Lilium X ‘Enchantment’ is mediated by ethylene, and that an increase in ethylene evolution in darkness is a consequence of the influence of light on ethylene action rather than a direct influence on ethylene biosynthesis.
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 42 (1978), S. 0 
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Based upon the method we developed to measure ethylene in very low concentrations (as low as 0.01 ppb in the ambient atmosphere) an experimental chamber was constructed and integrated in the measuring system for plant physiological studies. Parameters influencing the accuracy of the technique are evaluated. The pressure in the plant chamber increased 0.05 atm at a flow rate of 10 1/h during ethylene trapping. At this flow rate the ethylene production per seedling is independent of the number of seedlings used. The ethylene measured per seedling is directly proportional to the length of trapping time. Under standard conditions of chamber configuration and volume very small changes in ethylene content can be detected accurately in a very short time range. Our experimental arrangement allows kinetic studies of ethylene evolution by biological objects in a qualitative and quantitative manner. All methods used heretofore are more complicated and less accurate compared to the measuring system presented here. Its versatility is demonstrated for both in vitro and in vivo studies of ethylene production by bean seedlings. The application fields of the apparatus are discussed.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 14 (1991), S. 0 
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract. The effect and accumulation of cadmium (Cd) in lettuce grown by means of the hydroponic technique was investigated by multivariate analysis, and was found to be affected by the concentration of other trace elements. Particularly iron acted in a strongly antagonistic way against Cd. Consequently, no absolute toxicity limits for Cd can be drawn without considering other trace elements.
    Type of Medium: Electronic Resource
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