Summary
Sixteen durum wheat landraces. i.e. 6 from Algeria, 5 from Ethiopia and 5 from Italy were analysed in order to ascertain the amount of variation for all 11 spike characters. For each population the differences among spike progenies were significant for all the observed characters. Principal component analysis showed that 4 factors accounted for 80% of the total variation. Component 1 accounted for 32% of the total variation and was associated with spike width, spike density, number of kernels per spikelet and kernel weight. Component 2 accounted for 24% of the total variation and was associated with number of fertile spikelets, total number of spikelets and spike length. In a scatter diagram of all 1127 spike progenies for the first two principal components, the material from Ethiopia and Italy clustered at two opposite sides, while the material from Algeria had the largest swarm and overlapped the other two groups of material. Differences among populations from the same origin were found. The ecological and anthropological causes that may have played a role in the creation of the observed variation in the examined populations, are discussed.
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Adary, A. H., 1981. Genetic variation in landraces of durum wheat and its value in durum wheat improvement. Ph. D. Dissertation. Univ. of California, Davis, Ca.
Bennett, E., 1970. Tactics of plant exploration. In: O. H. Frankel & E. Bennett (Eds.), Genetic resources in plants. Their exploration and conservation. IBP Handbook No. 11: 157–160.
Bogyo T. P., Porceddu E. & Perrino P., 1980. Analysis of possible sampling strategies for collecting genetic material. Economic Botany 34: 160–174.
Ciferri, R. & Bonvicini, M., 1959–60. Revisione delle vecchie razze italiane in rapporto ai frumenti mediterranei. Quaderni del Laboratorio crittogamico. Ist. Botanica, Univ., Pavia, No. 17.
Frankel, O. H., 1973. Survey of crop genetic resources in their centers of diversity. First report FAO/IBP. Rome.
Harlan J. P., 1975. Crops and man. Amer. Soc. Agron. and Sci. Soc. Am. Madison, Wis.
Jain S. K., Qualset C. O., Bhatt G. M. & Wu K. K., 1975. Geographical patterns of phenotypic dive in a world collection of durum wheats. Crop Science 15: 700–704.
Murdock G. P., 1959. Africa: Its people and their history. MacGraw Hill, New York.
Perrino P., G. B. Polignano, E. Porceddu, G. Olita & N. Volpe, 1976. Frumenti del Norda-Africa. III. Risultati di una missione nell' Atlante algerino-tunisino. Annali della Facoltà di Agraria, Università di Bari 28: 401–414.
Porceddu E., 1976. Variation for agronomical traits in a world collection of durum wheat. Zeit. für Pflanzenztg 77: 314–329.
Porceddu, E., 1979. Genetic variability in durum wheat germplasm of different origins. Monografia IV, Genetica Agraria 39–70.
Porceddu, E. & Olita, G., 1974. Frumenti del Nord-Africa. Risultati di una missione nel Nord-Est Algerino. Ann. Facoltà di Agraria, Univ. Bari 671–686.
Qualset, C. O. & Puri, Y. P., 1974a. Heading time in a world collection of durum wheat. Photo and thermal-sensitivity related to latitudinal responses and geographic origins. In:G. T. Scarascia Mugnozza (Ed.), Proc. Int. Symp. Durum Wheat Breeding and Genetic, 165–178.
Qualset C. O. & Puri Y. P., 1974b. Sources of earliness and winter habit in durum wheat. Wheat Inf. Service 38: 13–15.
Scarascia Mugnozza, G. T. & Porceddu, E., 1974. Genetic studies on coleoptile length in durm wheat. In: E. R. Sears & M. S. Sears (Eds), Proc. 4th. Int. Wheat Genetic Symp. Columbia, Mo., 301–308.
Schreiber D., 1934. Wheats of islands of the Mediterranean. Bull. Appl. Bot. Genet. Pl. Breed. Serv. 2: 41–240.
Vavilov N. L., 1951. The origin, variation, immunity and breeding of cultivated plants. Chrom. Bot. 13: 1–364.
Zohary, D., 1970. Centres of diversity and centres of origin: In: O. H. Frankel & E. Bennett (Eds.), Genetic resources in plants. Theirs exploration and conservation. I.B.P. Handbook No. 11: 33–42.
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Spagnolettizeuli, P.L., De Pace, C. & Porceddu, E. Variation in durum wheat populations from three geographical origins. I. Material and spike characteristics. Euphytica 33, 563–575 (1984). https://doi.org/10.1007/BF00021158
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DOI: https://doi.org/10.1007/BF00021158