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  • 1
    Electronic Resource
    Electronic Resource
    Genetic changes under domestication in Vicia faba (1986)
    Springer
    Theoretical and applied genetics 72 (1986), S. 364-372 
    Details
    ISSN: 1432-2242
    Keywords: Inheritance ; Evolution ; Vicia faba ; Domestication
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The components of variation within each one of two sets of landraces and/or cultivars of Vicia faba, respectively constituted of primitive and advanced morphological types, were studied by means of two sets of 8 × 8 diallel crosses with two repetitions. The results show that primitive and modern forms differ from each other in both the intensity and the kind of selective pressures acting on them, mainly on those characters more modified through the domestication process: i.e., seed morphology and the number of flowers per node. Because of the paramount importance of the additive component in the primitive forms, it is suggested that the most important type of selection on them is the stabilizing one. On the contrary, in the most advanced forms the selection is directional and disruptive : directional towards greater yields, and disruptive separating two morphological types, ‘major’ and ‘equina’. The plant response to these different selective pressures has been to modify the genetic control of different characters: thus the primitive forms generally show only additivity while the most advanced forms show additivity as well as directional and asymmetrical dominance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00288574
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  • 2
    Electronic Resource
    Electronic Resource
    Genetic mapping of new morphological, isozyme and RAPD markers in Vicia faba L. using trisomics (1996)
    Springer
    Theoretical and applied genetics 93 (1996), S. 1130-1138 
    Details
    ISSN: 1432-2242
    Keywords: Vicia faba ; Trisomic ; Isozymes ; RAPDs ; Linkage groups
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Thirteen F2 families of faba bean (Vicia faba L.), descended from plants trisomic for chromosomes 3, 4, 5 and 6, have been analyzed for morphological, isozyme and RAPD markers. This allowed the establishment of linkage relationships among these markers as well as the assignment of some markers and/or linkage groups to their respective chromosomes. The linkage analysis of partially overlapping sets of informative genetic markers for the data pooled from 13 F2 families has revealed 48 linkage groups, six of which have been precisely assigned to specific chromosomes. A statistical procedure to analyze the data of joint segregation analysis in families derived from trisomic plants has been developed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00230136
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  • 3
    Electronic Resource
    Electronic Resource
    Genetics and mapping of new isozyme loci in Vicia faba L using trisomics (1995)
    Springer
    Theoretical and applied genetics 91 (1995), S. 783-789 
    Details
    ISSN: 1432-2242
    Keywords: Vicia faba ; Isozyme ; Trisomic ; Mapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Polymorphism in ten enzyme systems (ACO, ACP, AAT, EST, FK, ME, NAG, PRX, 6PGD, and SOD) in Vicia faba L. was analyzed, revealing 13 loci, six of which have not been reported before. Inheritance, genetics, possible location, and linkage analysis were studied in 13 different F2 populations trisomic for four of the six chromosomes (nos. 3, 4, 5, and 6) of the species. Each of these loci exhibited typical Mendelian inheritance except for those involved in the trisomic chromosome. Five loci have been assigned to a specific chromosome: Est-2 to chromosome 3, Fk-2 to chromosome 4, Prx-1 to chromosome 5, and Sod-1 and Pgd-p to chromosome 6. Nag-1 and Pgd-c displayed a linkage of 22.8 cM indicating a clear homology with chromosome 5 of garden pea on which both markers are syntenic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00220960
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  • 4
    Electronic Resource
    Electronic Resource
    Quantitative inheritance and barriers to crossability in Cicer arietinum L. (1979)
    Springer
    Theoretical and applied genetics 55 (1979), S. 5-16 
    Details
    ISSN: 1432-2242
    Keywords: Genetic barriers ; Cicer arietinum ; Diallel analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Three different diallel crosses were studied in Cicer arietinum; two of size 6×6, one within each of the two botanical groups ‘macrosperma’ and ‘microsperma’ of the cultivated subspecies, and one of 9×9 involving lines covering most of the morphological variation of chickpea. Barriers to crossability present neither a botanical nor a geographical pattern, being probably a direct consequence of interactions between genotypes. The genetic systems of twelve quantitative characters were analysed. Full dominance in a negative sense (small values dominant) is shown by leaflet length, width and shape index, rachis length, leaflet density on the rachis and pod length. Full dominance in a positive sense is shown by seeds per pod. Overdominance (in a positive sense) is evident for pods, seeds and yield per plant. Weak reciprocal differences were manifested by pod length, and pods, seeds and yield per plant. The system controlling number of leaflets per leaf is not clear. Dominance of ‘primitive’ over ‘selected’ characters seems to be the rule. As far as the environmental effects have permitted the analysis, no differences in genetic systems were observed between botanical groups.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00282970
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  • 5
    Electronic Resource
    Electronic Resource
    Variation among Spanish faba beans cultivars: taxonomic and evolutionary implications (1993)
    Springer
    Genetic resources and crop evolution 40 (1993), S. 105-111 
    Details
    ISSN: 1573-5109
    Keywords: crop evolution ; discriminate analysis ; germplasm ; landraces ; principal component analysis ; Vicia faba
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Univariate and multivariate analysis were used to examine phenotypic variability within a Spanish faba bean germplasm collection maintained at the Centro de Investigación y Desarrollo Agrario, Córdoba, Spain. The analysis of 158 Spanish faba bean accessions and 12 quantitative traits indicated highly significant differences among botanical groups for 8 characters and among geographic regions for 10 characters. An east to west clinal pattern of variation for some characters was detected. In order to identify the main characters which account for the major variation, the same collection was subjected to principal component analysis for 12 quantitative traits. Reproductive and plant height characters appeared to be the major sources of diversity. To determine the importance of both geographic and botanical variation among the Spanish cultivars, discriminant analysis was applied. According to these analyses, plant height, height of the lowest pod-bearing node, pod length and 100 seed weight, were important traits discriminating among different geographic regions. The main character discriminating among botanical groups was the 100 seed weight. Our results fit in a pattern in which both agroecological and anthropological causes could have played a role in the observed variation. This analysis can help plant breeders in choosing the most favorable accessions in plant breeding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00052641
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