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  • Articles  (8)
  • Phaseolus vulgaris  (8)
  • 1980-1984  (8)
  • 1970-1974
  • 1925-1929
  • 1984  (8)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (8)
  • Economics
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  • Articles  (8)
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  • 1980-1984  (8)
  • 1970-1974
  • 1925-1929
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  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (8)
  • Economics
  • Biology  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of plant pathology 90 (1984), S. 85-94 
    ISSN: 1573-8469
    Keywords: Phaseolus vulgaris ; bean ; bean common mosaic virus ; black root ; aphid transmission ; disease score ; Kenya
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Samenvatting Het gebruik van het dominante gen I voor de bestrijding van de virusziekte bonerolmozaïek stelt een bonengewas bloot aan het gevaar van systemische necrose, als niet een of meer recessieve genen aanwezig zijn om deze overgevoeligheidsreactie van de planten te voorkomen. Gedurende een periode van drie jaar werden waarnemingen verricht om na te gaan hoe vaak deze necrose optrad. Slechts bij uitzondering bleek meer dan 10% van de planten te worden aangetast. In die gevallen werd de opbrengst toch aanmerkelijk verhoogd door de aanwezigheid van het dominante gen I. Het gebruik van dit gen ter bestrijding van het bonerolmozaïek wordt daarom voor Kenya aanbevolen. Voortdurend moet echter worden nagegaan in welke mate necrose-inducerende stammen van het virus voorkomen. Een verbreding van de erfelijke basis van de resistentie ter voorkoming van de necrotische reactie door introductie van recessieve resistentiegenen is raadzaam.
    Abstract: Résumé L'emploi du gène dominant I pour la lutte préventive contre la mosaïque commune du haricot, en I'absence d'un ou plusiers gènes récessifs pour éviter une réaction hypersensible de la plante, entraine un danger de mort de la plante par ‘racines noires’. Néanmoins, pendant les 3 ans d'observations au Kénya, les cas de ‘racines noires’ ne sont apparus qu'exceptionnellement à un taux superieur à 10%, et, dans de tels cas, le rendement du végétal ayant le gène dominant I était, de façon significative, supérieur à celui des végétaux prédisposées à la mosaïque. L'utilisation au Kénya du facteur de résistance dominant est par conséquent recommendé mais une attention et une surveillance permanentes de I'évolution de la maladie sont nécessaires. On peut conseiller I'élargissement de la base de résistance par addition de gènes récessifs pour le contrôle de la maladie des ‘racines noires’.
    Notes: Abstract The deployment of the dominant gene I for the control of bean common mosaic predisposes a bean crop to the risk of death by black root if one or more recessive genes to prevent the hypersensitive plant reaction are lacking. However, during 3 years of observation in Kenya black root occurred only exceptionally to more than 10%, and in such cases the yields from crops having the dominant gene I exceeded significantly those from mosaic-susceptible crops. The use of the dominant resistance factor in Kenya is therefore recommended, but continued caution and monitoring of the disease situation are required. Broadening the resistance basis by adding recessive genes to control black root is advisable.
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Plant foods for human nutrition 34 (1984), S. 3-13 
    ISSN: 1573-9104
    Keywords: Phaseolus vulgaris ; phaseolin ; trypsin ; trypsin inhibitor ; seed proteins ; enzymic digestion ; digestibility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In vitro proteolysis was used to study the digestibility of the major seed protein phaseolin, and the trypsin inhibitor, purified fromPhaseolus vulgaris seeds. Whereas denatured phaseolin was fully digested by the enzymic method used [4], its native form was only partially digested. Trypsin inhibitor, both native and after heat treatment, was poorly digested. It was also found that native trypsin had some resistance to digestion conferred upon it by the presence of the inhibitor.
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  • 3
    ISSN: 1573-5060
    Keywords: Phaseolus vulgaris ; common bean ; Pseudomonas syringae ; halo blight bacterium ; strains ; water-soaked reaction ; systemic chlorosis ; leaf and pod reaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A comparative test of six inoculation methods was conducted using 2 halo blight race 2 virulent strains, Nebr. HB 16 and HB 21 (Pseudomonas syringae pv. phaseolicola), on five dry bean cultivars/lines (Phaseolus vulgaris L.) of known resistance and susceptibility. The water-soaking of leaves method caused the most severe reaction among the leaf inoculation methods, followed by the carborundum, spraying and multiple needle methods, respectively. The seed soaking method was considered too severe to be useful, since entries identified as resistant by the other methods, were susceptible with the former method. Great Northern Nebraska # 1 sel. 27 and PI 150414 had the highest level of leaf resistance, but the former developed systemic chlorosis with the stem stabbing method, but not the latter line. No systemic chlorosis was seen in either line with the other methods of inoculation. This suggests that there may be a different genetic mechanism conferring resistance/susceptibility to the toxin in these two lines when the stabbing method is used. No interaction occurred between method by genotype and isolate by method but significant interactions occurred between genotype by isolate and method by isolate by genotype. The leaf and pod reaction of forty cultivars/lines to the new halo blight Nebr. Charlevoix strain was also determined. Different combinations of degrees of resistance and susceptibility of leaves and pods were observed. GN Tara, GN Harris, and PI 150414 had the highest combination of leaf and pod resistance.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1573-5036
    Keywords: Beans ; Bleeding sap N ; Nitrate ; Phaseolus vulgaris ; Ureides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The nitrogenous compounds in the xylem (bleeding) sap of lines of field-grownPhaseolus vulgaris L., known to vary in N2 fixation and yield, were measured during growth with and without N fertilizer. Forty nine-67% of the total sap N was in the form of nitrate in fertilized plants, with low amounts of the ureides, allantoin and allantoic acid (4–12%). Ureides contributed between 17 and 38% to the total sap N of non-fertilized plants, with nitrate generally comprising less than 40%. Among the nine lines grown without fertilizer there were significant differences in the % of the sap N as ureides and also in the total μmol N ml−1 sap. The ASN/GLN ratio (mol/mol) was greater in sap collected from the two parental lines given fertilizer compared with non-fertilized plants. However the actual ratio varied between the parental lines. Together the two amides generally comprised between 43–62% of the amino-N in sap samples from the two parental lines with or without N fertilizer. For each N treatment (fertilized or non-fertilized) there were no obvious differences in sap composition between the high N2 fixing lines and the low N2 fixing lines. However there was generally a positive relationship between the rate of N translocation (total N concn. ml−1 sap x rate of exudation) and the ranking of the lines on the basis of higher N2 fixation rates (acetylene reduction), which was to a large extent independent of the source of N available to the plant.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 33 (1984), S. 199-208 
    ISSN: 1573-5060
    Keywords: Phaseolus vulgaris ; beans cultivar identification ; allozyme ; pattern ; allozyme bar-code ; isozymes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Allozyme genotypes were determined at 10 loci for 90 cultivars of white seeded snap beans. Within cultivars the loci were homozygous and usually monomorphic, permitting the characterization of most cultivars by a single set of allozymes. A total of 72 allozyme combinations were observed among the cultivars tested, and 52 (58%) of the cultivars could be uniquely distinguished by allozyme genotype alone. The remaining 38 lines could be separated into small groups of 2–5 cultivars each.
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  • 6
    ISSN: 1573-5060
    Keywords: Phaseolus vulgaris ; common bean ; hybrid dwartism ; seed size ; growth habit ; crippled development ; sublethal development ; diallel cross ; evolution ; breeding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Dwarlism in F1 hybrids has been observed in over 100 crosses of dry beans (Phaseolus vulgaris L.) at the Centro Internacional de Agricultura Tropical (CIAT), Cali, Colombia. In each cross, one parent always had small seeds and the other parent either medium or la ge ones. This apparent incompatibility between the two groups of germplasm was controlled by two complementary, dominant genes: DL1 and DL2. Smallseeded bean lines carried gene DL1 and originated in Brazil, Colombia, Guatemala, and Mexico; medium for large-seeded bean lines carried gene DL2 and were from Bolivia, Brazil, Chile, Colombia, Turkey, The United States, and West Germany. Thes two genes have probably played an important role in the evolution of dry bean forms of different seed sizes by serving as a genetic barrier or isolating mechanism, thus limiting free genetic recombination between the two germplasm groups. Apparent differences in the adaptiveness and yielding ability of the two groups of bean germplasm, smallys, medium- and large-seeded, and some breeding implications for manipulation of the genes causing F1 hybrid dwarfism were also discovered.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 33 (1984), S. 377-385 
    ISSN: 1573-5060
    Keywords: Phaseolus vulgaris ; common bean ; genetic correlation ; genotype-environment interaction ; indirect selection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Parents and F2 progenies of an 8×8 diallel cross were grown under non-compacted and compacted soil conditions. Soil compaction reduced yield, pods per plant, and seeds per pod; however, an increase in seed wieght and no effect for pod length were observed. With the exception of pods per plant, the remaining traits had larger genetic variances under non-compacted soil conditions. Phenotypic correlations involving yield and related traits were similar under the two conditions. Tolerance to soil compaction and mean performance over the two soil conditions were defined. Genetic correlations in terms of: (1) the ratio of genetic variances under the stress and non-stress conditions, and (2) the correlation between performance under the two conditions, were calculated and discussed.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 82 (1984), S. 315-327 
    ISSN: 1573-5036
    Keywords: Breeding ; Competition ; Glycine max ; Nitrogen fixation ; Nodulation ; Phaseolus vulgaris
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary While symbiotic nitrogen (N2) fixation byG. max andP. vulgaris reduces their need for combined N, N2 fixation under field conditions is rarely maximized. This paper reviews constraints to N2 fixation in these species, then examines the genetic variability recorded for traits affecting N2 fixation and the further work needed in this area. It considers emerging programs for the improvement of N2 fixation inG. max andP. vulgaris and pays particular attention to methodological considerations.
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