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Chromosome translocations in wild populations of tetraploid emmer wheat in Israel and Turkey

By: Joppa, L.R.
Contributor(s): Beiles, A [coaut.] | Nevo, E [coaut.].
Material type: materialTypeLabelArticlePublisher: 1995ISSN: 0040-5752.Subject(s): Biological development | Cell division | Europe | Gramineae | Mediterranean countries | Middle east | Plant genetics and breeding | Plants | Recombination | Southern europe | Western Europe | Wildlife | TriticumDDC classification: 97-091147 In: Theoretical and Applied Genetics (Germany). (1995). v. 91(5) p. 713-719Summary: Translocation frequencies (as compared to the standard chromosome arrangement typified by that in 'Chinese Spring') in 9 or more genotypes from each of 15 populations of Triticum dicoccoides in Israel were determined. Data also were obtained from 2 genotypes of the southernmost population (Jaba). A single population from Turkey was also investigated. There were 119 genotypes with translocations in the sample of 171 genotypes investigated (70%). The frequency of translocations in different populations varied from 0.27 to 1.00, and all populations had 1 or more genotypes with one or more translocations. Some populations such as Qazrin appeared to be homogeneous for translocations, but most populations were heterogeneous. A sample of 17 genotypes from 12 of the populations were crossed with the Langdon D-genome disomic substitutions to determine the identity of the chromosomes involved in the translocations. There were nine genotypes with translocations and with the exception of a 2A/2B translocation, none of them involved the same chromosomes. The B-genome chromosomes were involved in translocations more frequently than the A-genome chromosomes. Translocation frequencies (TF) of the various populations were correlated with environmental variables, primarily with water AV: and humidity, and possibly also with soil type. In general, TF was higher in peripheral populations in the ecologically heterogeneous frontiers of species distribution than in the central populations located in the catchment area of the upper Jordan valleyCollection: AGRIS Collection
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Article CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

AGRIS Collection 97-091147 (Browse shelf) Available
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6 graphs, 2 tables; 16 ref. Summary (En)

Translocation frequencies (as compared to the standard chromosome arrangement typified by that in 'Chinese Spring') in 9 or more genotypes from each of 15 populations of Triticum dicoccoides in Israel were determined. Data also were obtained from 2 genotypes of the southernmost population (Jaba). A single population from Turkey was also investigated. There were 119 genotypes with translocations in the sample of 171 genotypes investigated (70%). The frequency of translocations in different populations varied from 0.27 to 1.00, and all populations had 1 or more genotypes with one or more translocations. Some populations such as Qazrin appeared to be homogeneous for translocations, but most populations were heterogeneous. A sample of 17 genotypes from 12 of the populations were crossed with the Langdon D-genome disomic substitutions to determine the identity of the chromosomes involved in the translocations. There were nine genotypes with translocations and with the exception of a 2A/2B translocation, none of them involved the same chromosomes. The B-genome chromosomes were involved in translocations more frequently than the A-genome chromosomes. Translocation frequencies (TF) of the various populations were correlated with environmental variables, primarily with water AV: and humidity, and possibly also with soil type. In general, TF was higher in peripheral populations in the ecologically heterogeneous frontiers of species distribution than in the central populations located in the catchment area of the upper Jordan valley

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AGRIS Collection

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