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  • 1
    Electronic Resource
    Electronic Resource
    Variation in Cicer arietinum L. (1978)
    Springer
    Euphytica 27 (1978), S. 465-485 
    Details
    ISSN: 1573-5060
    Keywords: Cicer arietinum ; chickpea ; biosystematics ; intraspecific variation ; crop evolution ; phenotypic ; genotypic and environmental correlations ; principal component analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A collection of populations and cultivars of Cicer arietinum L. were studied to obtain phenotypic, genotypic and environmental correlation coefficients, and broad sense heritabilities. Principal Component Analyses were performed on phenotypic, genotypic and environmental matrices. Data and phase obtained on a pure morphological basis, as well as on quantitative genetic studies and geographical distribution support the existence of two complexes within the cultivated chickpea, macrosperma and microsperma. These taxa differ in a cluster of complex characters associated with seed. pod and leaf morphology, and they differ in distribution. There is no taxonomic basis to treat these as subspecies. We propose to include C. reticulatum Lad., the wild chickpea, as a subspecies of C. arietinum, with the cultivated kinds recognized as subspecies arietinum. Race macrosperma was derived from race microsperma through selection during relatively recent times of the evolutionary history of the chickpea.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00043173
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  • 2
    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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