Repeated sequence DNA comparisons between Triticum and Aegilops species
نویسندگان
چکیده
منابع مشابه
Estimating divergence times of Drosophila species from DNA sequence comparisons.
Comparisons between species of the DNA sequences of homologous single copy genes have great potential for use in the reconstruction of phylogenies. The rates of change of nucleotides in introns and " silent " sites in exons are independent of generation time, approximately constant in different lineages, and apparently also constant for different genes (Hayashida and Miyata 1983). From calibrat...
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Zymograms of the aspartate aminotransferase (AAT, EC 2.6.1.1) activity in leaf extracts from Aegilops and Triticum species revealed three AAT zones, denoted according to the decreasing electrophoretic mobility towards the anode as AAT-1, AAT-2 and AAT-3. The AAT activity zymograms of subcellular fractions isolated from T. aestivum seedlings made it possible to establish that the AAT-1 zone is l...
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Introgressive hybridization has played a crucial role in the evolution of many plant species, especially polyploids. The duplicated genetic material and wide geographical distribution facilitate hybridization and introgression among polyploid species having either homologous or homoeologous genomes. Such introgression may lead to the production of recombinant genomes that are more difficult to ...
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Ceratocystis polonica and C. laricicola are two morphologically similar species that occur on conifers and reside in the Ceratocystis coerulescens species complex. They, however, represent two ecologically distinct entities. C. polonica causes blue stain on Norway spruce (Picea abies) and other spruce species (Picea spp.) in Eurasia and is associated with the bark beetles Ips typographus, I. ty...
متن کاملResistance in Triticum and Aegilops spp. to Meloidogyne chitwoodi.
Two lines of Aegilops squarrosa (G 3489 and G 1279) and Triticum cultivars Anza, Cocorit, Produra, Chinese Spring, Nugaines, and a synthetic hexaploid were screened for resistance to Meloidogyne chitwoodi. Reproduction of M. chitwoodi, expressed as eggs per gram root, was low (P < 0.01) on G 3489 and the synthetic hexaploid. Reproduction on all other cultivars tested was high although differenc...
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ژورنال
عنوان ژورنال: Heredity
سال: 1979
ISSN: 0018-067X,1365-2540
DOI: 10.1038/hdy.1979.34