Schriften zu Genetischen Ressourcen - Genres

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L. FRESE undertaken to estimate the genetic similarity between accessions within a group of probable duplicates. The preliminary results indicate that there are less duplicates than expected. The results also indicate a curator’s decision problem. There are, for example, entries in the duplicate group “Lucullus” (most original sample IDBB2629) that are similar at a 90% level (entry 133 and 134) while others (entry 140) are rather distinct (Fig. 1) (FORD-LLOYD 2000, FORD-LLOYD et al. 2001). Whether entry 134 can be considered as redundant material that should be combined with 133 under the assumption that both accessions contain the same useful genetic variation still is at the curator’s discretion. To avoid unintentional screening of duplicates, a core collection of the “most original accessions” has been created using taxonomic and geographic data documented in the IDBB as well as curator’s knowledge (FRESE 2000). Between 600 and 800 accessions of this core collection have been screened for resistance to eight diseases as well as for drought tolerance. The data set emerging from the EU project GENRES CT95-42, including AFLP and SSR data derived from the duplicate search subproject, will be used to review and improve the currently rather large core collection set. Tapping the genepool In 1993 the World Beta Network (WBN) recommended to increase evaluation activities in vegetable beets (Leaf Beet and Garden Beet Group). A comprehensive evaluation of a Garden Beet Group collection was conducted by BARANSKI et al. (2001) a few years later. Amongst others, a wide variation for nitrate content (384 – 2894 mg/kg FM) was detected (GRZEBELUS and BARANSKI 2001). Low nitrate content is a quality character for red beet juice marketed as health product. However, such evaluation projects are still an exception. There are actually only two major evaluation activities. A programme for systematic screening has been set up by the USDA/ARS which is run by the Crop Germplasm Committee with great success since 1987 (DONEY 1998). Many of the new disease resistances used today in breeding were first detected in the USA such as the rhizomania resistance (WHITNEY 1989). The individual sets of accessions vary between 30-60 to limit the yearly workload of participating institutions and the required funds. The strength of the programme lies in its continuity both in terms of funding and expertise. Within the European Union or individual member states no such programme exists for Beta. The council regulation 1467/94 through which the GENRES CT95-42 is being funded must therefore be considered as a unique chance for germplasm enhancement of cultivated beets. Between 1996 and 2001, the Beta core collection has 177
Sugar beets and related wild species – from collecting to utilisation Tab. 3: Number of evaluation data points in two information systems Trait IDBB/GENRES GRIN/USDA-ARS Virus diseases 1989 1039 Bacterial diseases 221 Fungal diseases 2044 1527 Pests 533 Total 4033 3320 been screened by five project partners for the following traits: Rhizoctonia solani, Aphanomyces cochlioides, Pythium ultimum, yellowing viruses (BMYV, BYV), Cercospora beticola, Erysiphe betae, rhizomania (BNYVV) and drought tolerance. The numbers of evaluation data points generated by this project are summarised in Table 3. The amount of disease resistance data is higher in Europe as compared to data contained in the Genetic Resources Information Network (GRIN), while the number of distinct disease and pest agents is larger in the USA. Disease resistances are not very frequent. The following estimates were calculated based on the data contained in the IDBB (number of accessions with a score
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Schriften zu Genetischen Ressourcen
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Preface Preface In October 2001, th
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Preface Asia. M. CHAUVET (Montpelli
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Table of contents Table of contents
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Table of contents Utilisation of pl
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Table of contents Federal Informati
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Recollections of Rudolf Mansfeld Af
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Recollections of Rudolf Mansfeld Ma
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Recollections of Rudolf Mansfeld MA
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R. Mansfeld’s scientific influenc
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History of Plant Genetic Resources
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History of Plant Genetic Resources
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Mansfeld's Encyclopedia of Agricult
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The "Mansfeld Database" in its nati
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The "Mansfeld Database" in its nati
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A Species Compendium for Plant Gene
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Some notes on problems of taxonomy
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Theoretical and practical problems
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Development of Vavilov’s concept
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Multiple domestications and their t
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Ethnobotanical studies on cultivate
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Inventorying food plants in France
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The neglected diversity of immigran
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Unconscious selection in plants und
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Unconscious selection in plants und
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Page 141 and 142: R. V. BOTHMER, TH. V. HINTUM, H. KN
Page 149 and 150: Diversity of African vegetable Sola
Page 165 and 166: Molecular diversity studies in two
Page 167 and 168: The history of the medieval vegetab
Page 179 and 180: Paintings from the 16 th to 18 th c
Page 181 and 182: Sugar beets and related wild specie
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Page 193 and 194: Utilisation of plant genetic resour
Page 203 and 204: Proof of long-term stored potato ge
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Page 212 and 213: Structure of table ScientificName L
Page 214 and 215: Genebank work for preservation of t
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Page 218 and 219: 206 S. CHEBOTAR, M.S. RÖDER, V. KO
Page 220 and 221: Molecular diversity in the genus Am
Page 228 and 229: A. DIEDERICHSEN, D. KESSLER, P. KUS
Page 230 and 231: A. DIEDERICHSEN, D. KESSLER, P. KUS
Page 232 and 233: D. ENNEKING and H. KNÜPFFER Fishin
Page 234 and 235: References D. ENNEKING and H. KNÜP
Page 236 and 237: A.A. FILATENKO, K. PISTRICK, H. KN
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A.A. FILATENKO, K. PISTRICK, H. KN
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Pyrus L. Secale L. Sorbus L. Trifol
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Vigna angularis (Willd.) Ohwi et Oh
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Lycopersicon Mill. Nicotiana L. Sal
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Pyrus communis L. Trachomitum sarma
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R. macropetalus Dougl. ex Hook. R.
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U. FREYTAG, G.H. BUCK-S ORLIN and B
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Tab. 1: Actual European strawberry
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H. GRAUSGRUBER, H. BOINTNER, R. TUM
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yield / plant (g) resistance score
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H. GRAUSGRUBER, H. BOINTNER, R. TUM
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E.R.J. KELLER, A. SENULA and H. SCH
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Molecular mapping and geographical
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English translation of the 1979 Rus
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Development and evaluation of a Bra
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Maca (Lepidium meyenii) - cultivati
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Maca (Lepidium meyenii) - cultivati
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Mansfeld's Encyclopedia and Databas
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Mansfeld's Encyclopedia and Databas
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The Information System On Plant Gen
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The Information System On Plant Gen
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Characterisation of spring barley g
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Evaluation of genetic resources for
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Establishment of a German Network f
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Establishment of a German Network f
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Central register for biological res
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Central register for biological res
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Federal Information System Genetic
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Federal Information System Genetic
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Identification of novel interspecif
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Morphological characters in garlic
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Resynthesised Brassica napus as a g
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Resynthesised Brassica napus as a g
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Temperate homegardens of small alpi
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List of participants List of Partic
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List of participants Fischer, Manfr
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List of participants Lühs, Wilfrie
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List of participants Ruge, Brigitte
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