Wide hybridization experiments in cereals

Zenkteler, M.; Nitzsche, W.

doi:10.1007/bf00267883

Cited by 94 publications

(39 citation statements)

References 3 publications

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“…The potential range of wide hybridization of cereals, including wheat, barley (Hordeum vulgare), and rye (Secale cereale), was investigated by Zenkteler & Nitzsche (1984) . Hexaploid wheat was pollinated with 13 different species from the Poaceae and Panicoideae .…”

Section: Potential Of Wide Crossesmentioning

confidence: 99%

Recent advances in alien gene transfer in wheat

1993

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The recent advances in alien gene transfer from distantly-related species into wheat are reviewed in the present paper . The main achievements during the last ten years include the great expansion of the range of wide hybridization and development of new techniques for production and characterization of wheat-alien chromosome translocations . Updated results of wide hybridization since 1983 and comprehensive characterization of wheat-alien translocation lines in our laboratory are compiled . The future outlook for alien gene transfer in wheat is also discussed .

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Section: Potential Of Wide Crossesmentioning

confidence: 99%

Recent advances in alien gene transfer in wheat

1993

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“…In grasses, a partial somatic elimination of chromosomes from one parental species may occur, for example, in wide crosses of Hordeum lechleri 3 H. vulgare (Linde-Laursen and von Bothmer, 1999), Avena sativa 3 Zea mays (Riera Lizarazu et al, 1996), or Triticum aestivum 3 H. vulgare (Barclay, 1975). Complete uniparental chromosome elimination also occurs in some interspecific hybrids between closely related species (as H. vulgare or H. parodii 3 H. bulbosum and H. marinum 3 H. vulgare; Kasha and Kao, 1970;Subrahmanyam, 1977;Finch, 1983) Zenkteler and Nitzsche, 1984;Laurie andBennett, 1986, 1988;Rines and Dahleen, 1990;Chen and Hayes, 1991;Matzk and Mahn, 1994;Matzk, 1996;Matzk et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Uniparental Chromosome Elimination at Mitosis and Interphase in Wheat and Pearl Millet Crosses Involves Micronucleus Formation, Progressive Heterochromatinization, and DNA Fragmentation

et al. 2005

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Complete uniparental chromosome elimination occurs in several interspecific hybrids of plants. We studied the mechanisms underlying selective elimination of the paternal chromosomes during the development of wheat (Triticum aestivum) 3 pearl millet (Pennisetum glaucum) hybrid embryos. All pearl millet chromosomes were eliminated in a random sequence between 6 and 23 d after pollination. Parental genomes were spatially separated within the hybrid nucleus, and pearl millet chromatin destined for elimination occupied peripheral interphase positions. Structural reorganization of the paternal chromosomes occurred, and mitotic behavior differed between the parental chromosomes. We provide evidence for a novel chromosome elimination pathway that involves the formation of nuclear extrusions during interphase in addition to postmitotically formed micronuclei. The chromatin structure of nuclei and micronuclei is different, and heterochromatinization and DNA fragmentation of micronucleated pearl millet chromatin is the final step during haploidization.

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“…It may be that there are a variety of mechanisms at work, making the manifestation of incompatibility-related sterility specific to the material being investigated (Matzk, 1980). Morphology of the flowers can offer some insight, and the direction of the cross has been shown to be important in some cases (Zenkteler and Nitzsche, 1984).…”

Section: Sterilitymentioning

confidence: 99%

Breeding Perennial Grain Crops Based on Wheat

Curwen-McAdams

Jones

2017

Crop Science

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Wild relatives offer a diversity of traits potentially useful in crop improvement. Identification of major genes for resistance to biotic and abiotic stresses, in conjunction with targeted introgression, has introduced some of these traits into cultivated varieties. The difficulty of transferring complex traits, and associated linkage drag, has limited the ability of breeding programs to fully use important genetic variation. Wheat (Triticum L.) is an example of an important crop with large secondary and tertiary genepools of species capable of producing viable offspring by cross pollination. Wheat is annual, but most of the related species in the Triticeae Dumort tribe are perennials. An unknown number of genes control the perennial habit, although previous work has shown that it is a complex trait with quantitative expression. Lack of recombination between the parental genomes and complexity of the trait suggest another avenue for breeding: the addition of a genome. Multiple genera can hybridize with wheat, and some combinations produce stable amphiploids. The development of perennial grain and forage crops balancing the agronomics of wheat with the polycarpic habit of its relatives is promising. The approach is similar to Triticale (× Triticosecale Wittmack ex A. Camus), where new crops are developed combining the desirable qualities of the parents. Through prebreeding of the wild relatives, application of insight into meiosis, and strategic use of known genes, it should be more efficient to breed perennial grain crops adapted to diverse production systems.

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Wide hybridization experiments in cereals

Cited by 94 publications

References 3 publications

Recent advances in alien gene transfer in wheat

Recent advances in alien gene transfer in wheat

Uniparental Chromosome Elimination at Mitosis and Interphase in Wheat and Pearl Millet Crosses Involves Micronucleus Formation, Progressive Heterochromatinization, and DNA Fragmentation

Breeding Perennial Grain Crops Based on Wheat

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