ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Chromosome elimination in Hordeum vulgare x H. bulbosum hybrids (1983)
    Springer
    Theoretical and applied genetics 66 (1983), S. 141-146 
    Details
    ISSN: 1432-2242
    Keywords: Hordeum ; Stable hybrids ; Chromosome elimination ; Chromosome stability ; Gene balance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The hybrid progeny from a stable amphidiploid of H. vulgare x H. bulbosum involving the cultivar ‘Vada’ and an unstable amphidiploid involving the cultivar ‘Emir’ were studied. The genotypes examined contained two genomes from ‘Vada’ or one from ‘Vada’ and one from ‘Emir’, with one or two genomes from H. bulbosum. Comparisons between the chromosome numbers in root-tips and anthers revealed that there was no chromosome elimination in most plants, whether there was one or two Vada genomes present. The one plant in which chromosome elimination was positively identified had ‘Emir’ as opposed to ‘Vada’ cytoplasm. It also had a high incidence of degraded or fragmented chromosomes in the PMCs. Differences in stability between a 27 chromosome plant and other hypotetraploids suggest that ‘Vada’ contains both elimination genes and elimination suppressor genes. Upon selfing, again irrespective of the number of ‘Vada’ genomes present, circa triploid hybrids gave rise to diploid H. vulgare offspring while hypotetraploids produced hybrid-like plants. These included diploids, triploids and tetraploids. There was evidence that suggested that H. vulgare as well as H. bulbosum chromosomes had been eliminated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00265189
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Comparisons of the hybrids Hordeum chilensexH. vulgare, H. chilensexH. bulbosum, H. chilensexSecale cereale and the amphidiploid of H. chilensexH. vulgare (1985)
    Springer
    Theoretical and applied genetics 69 (1985), S. 519-522 
    Details
    ISSN: 1432-2242
    Keywords: Hordeum ; Secale ; Interspecific, intergeneric hybrids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Diploid hybrids between Hordeum chilense and three other species, namely H. vulgare, H. bulbosum and Secale cereale, are described together with the amphidiploid of H. chilensexH. vulgare. Both the diploid hybrid and the amphidiploid of H. chilensexH. vulgare were chromosomally unstable, H. chilensexH. bulbosum was less so, while H. chilensexS. cereale was stable. Differential amphiplasty was found in all combinations. No homoeologous pairing was found in the Hordeum hybrids but in H. chilensexS. cereale there was chromosome pairing both within the two genomes and between the genomes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00251097
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Chromosome elimination in Hordeum vulgare x H. bulbosum hybrids (1983)
    Springer
    Theoretical and applied genetics 66 (1983), S. 135-140 
    Details
    ISSN: 1432-2242
    Keywords: Hordeum ; Amphidiploids ; Chromosome elimination ; Chromosome stability ; Gene balance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Both diploid and tetraploid hybrids of Hordeum vulgare x H. bulbosum exhibit chromosome instability during plant development and generally lose the H. bulbosum chromosomes by the next generation. However an amphidiploid involving the cultivar ‘Vada’ was found to retain the bulbosum chromosomes through a sexual cycle. Comparisons were made between this stable amphidiploid and a second, unstable amphidiploid involving the cultivar ‘Emir’. At meiosis there was a wide range of chromosome numbers in the ‘Emir’ amphidiploid but only a narrow range in the ‘Vada’ amphidiploid. Degraded chromosomes were commonly found in the PMCs of the ‘Emir’ amphidiploid but none was found in the stable ‘Vada’ amphidiploid. The two amphidiploids were reciprocally crossed and the chromosome numbers of the progeny checked. The H. bulbosum chromosomes had been retained in many of the progeny and both triploid and tetraploid hybrids were found. It is proposed that a gene(s) exists in ‘Vada’ capable of preventing the elimination of bulbosum chromosomes from H. vulgare x H. bulbosum hybrids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00265188
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Partial incompatibility in crosses between Hordeum vulgare L. and H. bulbosum L. (1976)
    Springer
    Euphytica 25 (1976), S. 671-678 
    Details
    ISSN: 1573-5060
    Keywords: Hordeum ; interspecific partial incompatibility ; haploids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Certain cultivars of Hordeum vulgare L. gave low seed set (average 〈30%) after pollination with H. bulbosum, while others consistently gave high seed set (average 〉80%). The reduced seed setting occurred in crosses with cultivars which had H. distichum var. laevigatum in their ancestry. The results show that the reduced setting is probably controlled by a single dominant gene. This finding is of particular importance to breeders concerned with the use of Vada or some of its high yielding derivatives for producing haploids by interspecific hybridization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00041605
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...