GLORIA

GEOMAR Library Ocean Research Information Access

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
Filter
  • Diversity  (2)
  • Haploid  (2)
Document type
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Field performance of lines derived from haploid and diploid tissues of Hordeum vulgare (1986)
    Springer
    Theoretical and applied genetics 72 (1986), S. 458-465 
    Details
    ISSN: 1432-2242
    Keywords: Hordeum vulgare ; Barley ; Tissue culture ; Haploid ; Somaclonal variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Plant tissue culture technology is of increasing interest to plant breeders. As part of a continuing investigation into breeding methods with spring barley two studies were conducted to assess the field performance of the progenies of material regenerated in tissue culture. The first study involved two spring barley cultivars, ‘Golden Promise’ and ‘Mazurka’ and compared lines produced from immature embryo (IE) derived callus with those from embryos developed by the Hordeum bulbosum (Hb) technique of chromosome elimination. In general the mean values for the seven characters scored were lower for the IE than the Hb material. In the second study F1 hybrid material (‘Golden Promise’x‘Mazurka’) was used and doubled haploid lines produced by the H. bulbosum and microspore culture (M) techniques were compared with single seed descent (SSD) material. Analysis of these F∝ samples indicated that the mean values for the M lines were significantly lower than those of the Hb and SSD lines. Furthermore, data from the M lines showed significant evidence of variation created during the culture phase. The implications of these findings for barley breeding are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00289527
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Diversity and genetic differentiation among populations of Indian and Kenyan tea (Camellia sinensis (L.) O. Kuntze) revealed by AFLP markers (1997)
    Springer
    Theoretical and applied genetics 94 (1997), S. 255-263 
    Details
    ISSN: 1432-2242
    Keywords: Key words AFLPs ; Diversity ; Genetic differentiation ; Camellia sinensis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract AFLP markers were successfully employed to detect diversity and genetic differentiation among Indian and Kenyan populations of tea (Camellia sinensis (L.) O. Kuntze). Shannon's index of diversity was used to partition the total phenotypic variation into between and within population components. On average, most of the diversity was detected within populations, with 79% of the variation being within and 21% being between populations of Indian and Kenyan tea. A dendrogram constructed on the basis of band sharing distinctly separated the three populations of tea into China type (sinensis), Assam type (assamica) and Cambod type (assamica ssp. lasiocalyx) in a manner consistent with the present taxonomy of tea, the known pedigree of some of the genotypes and their geographical origin. Principal coordinate (PCO) analysis grouped Assam genotypes both from India and Kenya supporting the suggestion that the Kenyan clones have been derived from collections made in this region. The China types were more dispersed on the PCO plot which is a reflection of wider genetic variation. As would be expected, clones collected from the same region exhibited less overall genetic variation. AFLP analysis discriminated all of the tested genotypes from India and Kenya, even those which cannot be distinguished on the basis of morphological and phenotypic traits.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050408
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Anther culture of Hordeum vulgare L.: a genetic study of microspore callus production and differentiation (1987)
    Springer
    Theoretical and applied genetics 74 (1987), S. 60-64 
    Details
    ISSN: 1432-2242
    Keywords: Barley ; Anther culture ; Pollen ; Haploid ; Callus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The inheritance of the ability of barley anthers to produce microspore-derived callus in vitro was investigated. The genotypes selected were the two spring cultivars ‘Dissa’ (D) and ‘Sabarlis’ (S), the two F1 hybrids (DxS, SxD), the two backcross generations [Dx(DxS), Sx(DxS)], and an F2 generation derived from DxS. From a number of individuals of each generation, the first five spikes were harvested sequentially and after pre-treatment the anthers were removed and placed in culture. Cultures were scored for microspore callus production and plantlet differentiation. Although ‘Dissa’ gave a significantly higher level of callus production than ‘Sabarlis’, the overall frequencies of green and albino plant production were higher from ‘Sabarlis’. There was no significant difference between reciprocal F1 hybrids. Analysis of variance revealed significant differences in response between the spikes sampled from the plants. This was the major source of variation in the experiment. Spike to spike variation also appeared to be a heritable character.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00290084
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Detection of genetic diversity and selective gene introgression in coffee using RAPD markers (1994)
    Springer
    Theoretical and applied genetics 87 (1994), S. 934-940 
    Details
    ISSN: 1432-2242
    Keywords: Coffee ; Diversity ; RAPDs ; Gene introgression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract RAPD (randomly amplified polymorphic DNA) markers generated by arbitary decamers have been successfully employed to detect genetic polymorphisms between coffee species and between Coffea arabica genotypes. The RAPD profiles were used to construct dendrograms and these were consistent with the known history and evolution of Coffea arabica. Material originating from Ethiopia and the arabica sub-groups — C. arabica var. typica and C. arabica var. bourbon — were clearly distinguished. RAPD analysis therefore reflects morphological differences between the sub-groups and the geographical origin of the coffee material. Species-specific amplification products were also identified, but, more importantly, amplification products specific to C. canephora were identified in two C. arabica genotypes, Rume Sudan and Catimor 5175. This diagnostic product is therefore indicative of interspecific gene flow in coffee and has biological implications for selective introgressive hybridisation in coffee. Our study demonstrates the power of the polymerase chain reaction technology for the generation of genetic markers for long-lived perennial tree and bush crops.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00225787
    Location Call Number Limitation 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...