Crosses between Hordeum vulgare L. and H. bulbosum L. I. Production, morphology and meiosis of hybrids, haploids and dihaploids

Lange, W.

doi:10.1007/bf00146769

Cited by 75 publications

(38 citation statements)

References 19 publications

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“…The chromatin structure of nuclei and micronuclei differs and heterochromatinization and disintegration of the nuclear envelope of micronuclei are the fi nal steps of chromosome elimination. Copyright © 2006 S. Karger AG, Basel Interspecifi c crosses between Hordeum vulgare (cultivated barley) and Hordeum bulbosum (bulbous barley grass) are widely used to produce doubled haploid barley plants in breeding programs (Kasha and Kao, 1970;Lange, 1971a). The hybrids are often karyotypically unstable and the chromosomes of H. bulbosum are usually selectively eliminated during early embryo and endosperm development resulting in an H. vulgare haploid.…”

Section: Elimination Of Chromosomes Inmentioning

confidence: 99%

Elimination of chromosomes in Hordeum vulgare × H. bulbosum crosses at mitosis and interphase involves micronucleus formation and progressive heterochromatinization

Gernand

Rutten²,

Pickering³

et al. 2006

Cytogenet Genome Res

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Uniparental chromosome elimination occurs in several interspecific hybrids of plants. We studied the mechanism underlying selective elimination of the paternal chromosomes during the development of Hordeum vulgare × H. bulbosum hybrid embryos that is restricted to an early stage of development. In almost all embryos most of the H. bulbosum chromatin undergoes a fast rate of elimination within nine days after pollination. There are differences in the mitotic behaviour between the parental chromosomes, with H. bulbosum chromatids segregating asymmetrically at anaphase. We provide evidence for a 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 differs and heterochromatinization and disintegration of the nuclear envelope of micronuclei are the final steps of chromosome elimination.

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Section: Elimination Of Chromosomes Inmentioning

confidence: 99%

Elimination of chromosomes in Hordeum vulgare × H. bulbosum crosses at mitosis and interphase involves micronucleus formation and progressive heterochromatinization

Gernand

Rutten²,

Pickering³

et al. 2006

Cytogenet Genome Res

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“…Lange [1971b] observed elimination of chromosomes in 6 out of 10 tetraploid hybrids. Lange [1971a] presumed genetic control and/or environmental influences of chromosomal instabilities. Thomas and Pickering [1983] also reported on the influence of the genotype of a Hv cultivar on the elimination of Hb chromosomes in interspecific hybrids.…”

Section: Comparison Of Chromosome Composition In Pmcs Of the Hybrids mentioning

confidence: 99%

“…The bottle neck of using triploid hybrids is obtaining fertile pollen after colchicine treatment. Kasha and Sadasivaiah [1971], Lange [1971a], and Pohler and Szigat [1982] demonstrated multivalent associations in tetraploid HbHbHvHv hybrids. Szigat and Wustrack [1976] and Zhang et al [2001] also successfully used fertile tetraploid hybrids for interspecific gene transfer.…”

mentioning

confidence: 99%

The Effect of Homoeologous Meiotic Pairing in Tetraploid Hordeum bulbosum L. × H. vulgare L. Hybrids on Alien Introgressions in Offspring

Scholz

Pendinen²

2016

Cytogenet Genome Res

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The pairing behaviour of the individual chromosome arms of Hordeum vulgare (Hv) with their homoeologous arms of H. bulbosum (Hb) at metaphase I of meiosis in tetraploid Hb × Hv hybrids and the frequencies of recombined Hv chromosome arms in selfed offspring were studied on differentially visualized chromosomes after fluorescent in situ hybridisation. The frequencies of paired Hv-Hb arms in the F₂ and F₃ hybrids were correlated with the frequencies of recombined Hv chromosomes in progenies. Self-generation of hybrids, the number of Hv and Hb chromosomes, and the number of recombined Hv chromosomes of the hybrids strongly influenced the Hv-Hb pairing frequency in meiosis. Within the offspring of F₂ and F₃ hybrids both Hv plants and hybrids were detected. In contrast, all progenies of the F₄ hybrid were hybrids which exhibited centromere misdivisions. The highest frequencies of homoeologous pairing in hybrids and most recombinants were obtained for the barley chromosome 1HL. Recombinants for 4HL, 5HS, 6HS, and 7HS were rarely found. Meiotic pairing and recombinants involving chromosome 1HS were never observed. The results of this study demonstrate that fertile tetraploid interspecific hybrids with a high intergenomic pairing at meiosis are valuable basic material for introgression breeding in barley.

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“…iwlgaiv with no transfer of H . hulhosum characters (DAVIES 1958;LANCE 1971a;KASHA and SADASI-V A I A H 1971). KASHA and KAO (1970) reported that in crosses between diploid H .…”

mentioning

confidence: 99%

The production of fertile triploid hybrids from crosses between Hordeum vulgare L. (2n = 4x = 28) and H. bulbosum L. (2n = 2x=14)

Pickering¹

2008

Hereditas

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Triploid interspecific hybrids (2n = 3x = 21) combining two sets of chromosomes from Hordeum W / g f J W and one from H . hulhosum have twice been reported previously, with differing accounts of chromosome pairing at meiotic metaphase I. In attempts to produce large numbers of these hybrids, reciprocal crosses were made between two tetraploid cultivars of barley ( H . vulgare; 2n = 4x = 28) and four diploid genotypes of H . hulhosum (2n = 2x = 14) in an environment known to promote increased retention of the H . hulhosunz chromosomes. Forty-five putative hybrids were regenerated after embryo culture from H. vu/

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Crosses between Hordeum vulgare L. and H. bulbosum L. I. Production, morphology and meiosis of hybrids, haploids and dihaploids

Cited by 75 publications

References 19 publications

Elimination of chromosomes in <i>Hordeum vulgare</i> × <i>H. bulbosum</i> crosses at mitosis and interphase involves micronucleus formation and progressive heterochromatinization

Elimination of chromosomes in <i>Hordeum vulgare</i> × <i>H. bulbosum</i> crosses at mitosis and interphase involves micronucleus formation and progressive heterochromatinization

The Effect of Homoeologous Meiotic Pairing in Tetraploid <b><i>Hordeum bulbosum</i></b> L. × <b><i>H. vulgare</i></b> L. Hybrids on Alien Introgressions in Offspring

The production of fertile triploid hybrids from crosses between Hordeum vulgare L. (2n = 4x = 28) and H. bulbosum L. (2n = 2x=14)

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