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Titolo:
RAPD polymorphism of wild emmer wheat populations, Triticum dicoccoides, in Israel
Autore:
Fahima, T; Sun, GL; Beharav, A; Krugman, T; Beiles, A; Nevo, E;
Indirizzi:
Univ Haifa, Inst Evolut, IL-31905 Haifa, Israel Univ Haifa Haifa Israel IL-31905 fa, Inst Evolut, IL-31905 Haifa, Israel
Titolo Testata:
THEORETICAL AND APPLIED GENETICS
fascicolo: 3-4, volume: 98, anno: 1999,
pagine: 434 - 447
SICI:
0040-5752(199903)98:3-4<434:RPOWEW>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
RUST RESISTANCE GENE; HORDEUM-SPONTANEUM; ALLOZYME POLYMORPHISMS; NATURAL-SELECTION; SPATIAL AUTOCORRELATION; PCR MARKERS; DNA; DIVERSITY; BARLEY; IDENTIFICATION;
Keywords:
RAPD; genetic diversity; wild emmer wheat; ecological diversity; natural selection;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
53
Recensione:
Indirizzi per estratti:
Indirizzo: Fahima, T Univ Haifa, Inst Evolut, Mt Carmel, IL-31905 Haifa, Israel Univ Haifa Mt Carmel Haifa Israel IL-31905 -31905 Haifa, Israel
Citazione:
T. Fahima et al., "RAPD polymorphism of wild emmer wheat populations, Triticum dicoccoides, in Israel", THEOR A GEN, 98(3-4), 1999, pp. 434-447

Abstract

Genetic diversity in random amplified polymorphic DNAs (RAPDs) was studiedin 110 genotypes of the tetraploid wild progenitor of wheat, Triticum dicoccoides, from 11 populations sampled in Israel and Turkey. Our results showhigh level of diversity of RAPD markers in wild wheat populations in Israel. The ten primers used in this study amplified 59 scorable RAPD loci of which 48 (81.4%) were polymorphic and 11 monomorphic. RAPD analysis was foundto be highly effective in distinguishing genotypes of T, dicocioides originating from diverse ecogeographical sites: in Israel and Turkey, with 95.5%of the 100 genotypes correctly classified into sites of origin by discriminant analysis based on RAPD genotyping. However, interpopulation genetic distances showed no association with geographic distance between the population sites of origin, negating a simple isolation by distance model. Spatial autocorrelation of RAPD frequencies suggests that migration is not influential. Our present RAPD results are non-random and in agreement with the previously obtained allozyme patterns, although the genetic diversity values obtained with RAPDs are much higher than the allozyme values. Significant correlates of RAPD markers with various climatic and soil factors suggest that, as in the case of allozymes, natural selection causes adaptive RAPD ecogeographical differentiation. The results obtained suggest that RAPD markers are useful for the estimation of genetic diversity in wild material of T. dicoccoides and the identification of suitable parents for the development of mapping populations for the tagging of agronomically important traits derived from T. dicoccoides.

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Documento generato il 05/12/20 alle ore 07:51:31