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
Filter
  • Articles  (14)
  • Analytical Chemistry and Spectroscopy
  • Animals
  • Chemistry
  • potato
  • 1995-1999  (14)
  • 1997  (14)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (14)
  • 1
    Electronic Resource
    Electronic Resource
    Preparative isolation ofSolanum tuberosum L. glycoalkaloids by MPLC (1997)
    Springer
    Potato research 40 (1997), S. 413-416 
    Details
    ISSN: 1871-4528
    Keywords: α-chaconine ; α-solanine ; potato
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A new, efficient and economic method employing Medium Pressure Liquid Chromatography (MPLC) for the isolation of the two majorSolanum tuberosum L. glycoalkaloids (α-solanine and α-chaconine) is described. Potato peelings are homogenised with 5% acetic acid, the glycoalkaloids purified by filtration through an XAD-2 column and then by precipitation from the aqueous solution. The resulting glycoalkaloid fraction was purified by MPLC using a Silica Gel column and a CHCl3:MeOH:2% NH4OH mixture (70∶30∶5) as mobile phase to yield pure α-chaconine and a-solanine. This methodology can be used to obtain glycoalkaloids for enthomology and toxicological research where large amounts of these compounds are required.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358001
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Plant-to-plant transmission of the bacterial ring rot pathogenClavibacter michiganensis subsp.sepedonicus (1997)
    Springer
    Potato research 40 (1997), S. 229-235 
    Details
    ISSN: 1871-4528
    Keywords: potato ; Solanum tuberosum L. ; bacteria ; dispersal ; field trial
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Plant-to-plant transmission of the bacterial ring rot (BRR) pathogen,Clavibacter michiganensis subsp.sepedonicus (Spieck. et Kott.) Skapt. et Burkh. of potato (Solanum tuberosum L.), was studied in field trials over a three year period. Healthy and infected seed tubers were planted 35 cm apart. In one treatment, a subsurface barrier was placed between the healthy and infected seed tubers separating the root systems of neighbouring plants. In this treatment, none of 216 plants grown from healthy seed tubers was infected at harvest, as determined by indirect immunofluorescence antibody staining (IFAS) with monoclonal antibodies. In the other treatment, no subsurface barrier was used. In this treatment, two of 368 plants (0.5%) grown from healthy seed tubers were infected at harvest. It is concluded that plant-to-plant transmission may occur but at very low frequency, and is unlikely to play a significant role compared with the potential of transmission by shared potato handling equipment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358248
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The male fertility of primary and further generation dihaploids ofSolanum tuberosum (1997)
    Springer
    Potato research 40 (1997), S. 59-68 
    Details
    ISSN: 1871-4528
    Keywords: pollen stainability ; anthers ; breeding ; potato
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Male sterility in dihaploids ofSolanum tuberosum is often a barrier to their utilization in breeding and genetical studies. Although the male fertility of primary dihaploids (obtained directly from tetraploids) was generally low, a few were produced by the author which produced seed when used as pollen parents on female fertile dihaploids. The population of further generation dihaploids (from dihaploid intercrosses) produced from the showed a marked improvement in male fertility. Comparative data from measurements of different aspects of male fertility in dihaploids are presented. These showed that the weight of pollen per anther, the percentage of (iodine) stainable pollen and the number of seeds per berry were greater in further generation dihaploids than in primary dihaploids. It is suggested that interspecific crosses using dihaploids are not necessarily useful for increasing male fertility in diploid potatoes. The advantages of breeding at the diploid level withinS. tuberosum are discussed. Rare male-fertile dihaploids could be used to generate diploids with a high frequency of male fertility. These could then be used to cross with any other flowering dihaploids to combine characters at the diploid level, so exploiting the simpler genetic ratios associated with disomic inheritance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02407562
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Comparison of PCR-based marker systems for the analysis of genetic relationships in cultivated potato (1997)
    Springer
    Molecular breeding 3 (1997), S. 127-136 
    Details
    ISSN: 1572-9788
    Keywords: AFLP ; genetic relationships ; potato ; RAPD ; SSR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The application of AFLPs, RAPDs and SSRs to examine genetic relationships in the primary northwestern European cultivated potato gene pool was investigated. Sixteen potato cultivars were genotyped using five AFLP primer combinations, 14 RAPD primers, and 17 database-derived SSR primer pairs. All three approaches successfully discriminated between the 16 cultivars using a minimum of one assay. Similarity matrices produced for each marker type on the basis of Nei and Li coefficients showed low correlations when compared with different statistical tests. Dendrograms were produced from these data for each marker system. The usefulness of each system was examined in terms of number of loci revealed (effective multiplex ratio, or EMR) and the amount of polymorphism detected (diversity index, or DI). AFLPs had the highest EMR, and SSRs the highest DI. A single parameter, marker index (MI), which is the product of DI and EMR, was used to evaluate the overall utility of each marker system. The use of these PCR-based marker systems in potato improvement and statutory applications is discussed. Abbreviations: PCR, polymerase chain reaction; AFLP, amplified fragment length polymorphism; RAPD, randomly amplified polymorphic DNA; DNA, deoxyribonucleic acid; EMR, effective multiplex ratio; DI, diversity index; MI, marker index; RFLP, restriction fragment length polymorphism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009633005390
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Somatic hybridization between Solanum tuberosum and species of the S. nigrum complex: Selection of vigorously growing and flowering plants (1997)
    Springer
    Euphytica 96 (1997), S. 345-352 
    Details
    ISSN: 1573-5060
    Keywords: potato ; Solanum nigrum complex ; somatic hybridization ; hybrid selection criterions ; cell-selectable markers ; DNA content
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Fusion experiments were performed between diploid (2n = 2x = 24) or tetraploid (2n = 4x = 48) potato genotypes and four species of the Solanum nigrum complex, namely S. nigrum (2n = 6x = 72), S. villosum (2n = 4x = 48), S. chenopodioides (2n = 2x = 24) or S. americanum (2n = 2x = 24 and 2n = 6x = 72). All five accessions of the S. nigrum-species were successfully hybridized with at least one of the potato genotypes. Somatic combining abilities were influenced by the ploidy level as well as the genotype of the parental species. The use of kanamycin or hygromycin resistance as cell-selectable markersystem had no influence on somatic combining ability, but such markers can be useful to improve efficient selection of somatic hybrids in sufficient numbers. At least 20% of the hybrids of each successful combination performed well in vitro. However, only 60 genotypes out of 761 somatic hybrids were vigorous as well as flowering in the greenhouse. Analysis of the DNA content of somatic hybrids could be used as a criterion for the indirect selection in vitro of hybrids that were vigorous in the greenhouse. Flowering somatic hybrids of S. nigrum (+) 2x potato and S. americanum (+) 4x potato were selected with the aim of introgression of resistance traits after recurrent backcrossing with cultivated potato.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003038419126
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Selection of vigorous and fertile S-homo- and heterozygous tester clones from self-incompatible diploid potato, Solanum tuberosum L. (1997)
    Springer
    Euphytica 97 (1997), S. 97-111 
    Details
    ISSN: 1573-5060
    Keywords: Solanum tuberosum ; potato ; gametophytic self-incompatibility ; S-alleles ; pseudo-compatibility ; counterfeit pollination ; homozygotes ; embryo spot
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract For the selection of diploid (2n = 2x = 24) potato (Solanum tuberosum) genotypes that are useful for the molecular and genetic analysis of the phenomenon of gametophytic self-incompatibility, three different types of basic populations were investigated. These populations were derived from three primary dihaploid clones, G609, G254 and B16, which possessed the S-allele combinations S1S2, S1S3 and S3S4 respectively. In order to select highly vigorous, profusely flowering, fertile and tuberising progenies, three types of populations, derived from the above mentioned diploid genotypes, were screened for performance and classified for the expression of self-incompatibility. Although the selection for well defined S-genotypes was sometimes complicated due to the occurrence of pseudo-compatibility and of a self-compatibilising factor, the use of a combination of criteria, viz., Iso Electric Focusing (IEF), pollen tube growth in the styles and the extent of berry and seed set made the selection of sufficient representatives of all six types of S-heterozygotes (S1S2, S1S3, S1S4, S2S3, S2S4 and S3S4) possible. After evaluating the strength of the self-incompatibility reaction in these heterozygotes, those with high expression were selfed, and intercrossed within their S-allele incompatibility group through the method of counterfeit pollination. In these progenies, well-performing S-homozygotes (S1S1; S2S2; S3S3; S4S4) for all four S-alleles with high expression of self-incompatibility were selected. As a result, all possible S-homo- and heterozygous genotypes with a predictable type of self-incompatibility are available and maintained both vegetatively and as botanical seed. The development of this material has paved the way for more critical analysis of molecular factors involved in self-incompatibility in diploid potato.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003041006157
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Crossability relationships among wild potato species with different ploidies and Endosperm Balance Numbers (EBN) (1997)
    Springer
    Euphytica 94 (1997), S. 227-235 
    Details
    ISSN: 1573-5060
    Keywords: crossability ; Endosperm Balance Number (EBN) ; interspecific crosses ; potato ; Solanum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Three wild potato species with different ploidies and Endosperm Balance Numbers (EBN) were crossed in a complete diallel design and the development of the embryo and endosperm as well as the type of seeds produced were analyzed. The compatible crosses – intraspecific intra-EBN and interspecific intra-EBN – produced more than 89% plump seeds, whereas in the incompatible crosses – intraspecific inter-EBN and interspecific inter-EBN – more than 85% of the seeds were not as well developed or were shrunken. The histological analysis revealed that inviable seeds had less developed or collapsed endosperms and thicker endotheliums than viable ones. A gradation of crossabilities was observed among species. The self-compatible species Solanum acaule had good performance as a female but not as a male parent. Among the self-incompatible species, Solanum gourlayi was the best male parent but had a poor performance as a female, whereas Solanum commersonii had an intermediate behavior. Differences in crossabilities among genotypes within species were also observed. These results can not be solely explained by the EBN hypothesis. It is, therefore, suggested that the EBN may be part of a more complex system of interspecific barriers acting at the pre- and post-zygotic levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1002996131315
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Genetic divergence for cross prediction in potato (1997)
    Springer
    Euphytica 97 (1997), S. 269-275 
    Details
    ISSN: 1573-5060
    Keywords: cross prediction ; genetic divergence ; in vitro genetic divergence ; potato ; Solanum tuberosum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract To study the effectiveness of genetic divergence for cross prediction in potato, progeny means, heterosis and specific combining ability effects were correlated with parents’ genetic distances (D values) estimated under six in vitro and four in vivo conditions, for tuber yield in 72 crosses (18 × 4) of 22 parents under autumn crop conditions for three successive generations. Genetic distances under in vitro conditions had no relationship with the progeny means for tuber yield. Whereas, those under in vivo conditions in the autumn seasons were positively associated with the progeny means. Similarly, heterosis for tuber yield had a stronger relationship with genetic distances based on an in vivo crop than those based on an in vitro crop. All correlation coefficients between genetic distances and specific combining ability effects were non-significant. The magnitudes of the significant correlation coefficients showed that genetic divergence can be used as an indirect parameter of moderate effectiveness in selecting parents to produce heterotic high yielding progenies. Such cross predictions, however, would be effective only if parents are evaluated under the conditions similar to those under which crosses are likely to be evaluated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003076207221
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    A database for wild and cultivated potatoes (1997)
    Springer
    Euphytica 93 (1997), S. 155-161 
    Details
    ISSN: 1573-5060
    Keywords: database ; herbarium ; potato ; tuber-bearing Solanum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A database has been developed for the collections of wild and cultivated potatoes examined by the author in the world herbaria and in his own collections. A total of some 9,000 collections were examined, amounting to approximately 27,000 herbarium sheets when duplicates in different herbaria were taken into account. The information is arranged in twenty-one fields and the system used is DBase IV, version 1.1. 15.00 (including postage and packing) by applying to the author at the above address. Sterling cheques should be made payable to J.G. Hawkes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1002953700049
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Behaviour of genetically modified amylose free potato clones as progenitors in a breeding program (1997)
    Springer
    Euphytica 98 (1997), S. 169-175 
    Details
    ISSN: 1573-5060
    Keywords: potato ; Solanum tuberosum ; genetic modification ; amylose free ; transgenic clones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Three amylose-free genetically modified potato clones were used both as male and female parents in a breeding program with non-GMO potato clones. Segregation data on the expression of the inserted antisense gene construct in tubers of progeny plants were in agreement with previous molecular analysis of the transgenic clones. The inheritance of the inserted genes was according to Mendelian segregation. Therefore, these clones can be very useful in a breeding program for large scale introduction of amylose free potato cultivars into agriculture. Because of varying number and expression levels of inserts in the GMO-clones, but also because of the varying strength of the endogenous GBSS-alleles of the non-GMO-clones, a segregation into a range of amylose contents occurred. The segregation of the starch colour after iodine staining of pollen of transgenic clones did not follow the obtained segregation in the progeny and was, therefore, not useful in predicting the breeding result.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003109015151
    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...