Technical Yearbook 2024

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TABLE 1. Confirmation of synonyms for accessions with different denominations in the collection.

Import num ber or local source

Accession name

Marker 1

Marker 2

Marker 3

Marker 4

Marker 5

Marker 6

Marker 7

Marker 8

Marker 9

Marker 10

Marker 11

Marker 12

Marker 13

Marker 14

Limberger Blauer Limberger

I 43 188 188 142 142 170 177 384 397 238 247 176 191 201 205 225 225 155 170 196 205 137 158 141 151 235 248 233 241

I 31 188 188 142 142 170 177 384 397 238 247 176 191 201 205 225 225 155 170 196 205 137 158 141 151 235 248 233 241 Blaufränkisch Local 188 188 142 142 170 177 384 397 238 247 176 191 201 205 225 225 155 170 196 205 137 158 141 151 235 248 233 241 Trebbiano Local 179 188 131 142 170 177 384 390 247 251 176 181 201 205 225 225 155 159 196 202 135 162 134 151 243 248 228 237 Ugni Blanc I 1091 179 188 131 142 170 177 384 390 247 251 176 181 201 205 225 225 155 159 196 202 135 162 134 151 243 248 228 237 TABLE 2. Using parentage to correctly identify accessions. We could confirm that ‘Jantar’ is the Bulgarian cultivar and not the Slovenian one with the same name by checking the different parentages. Verified and published parentage (Queen of the Vineyard and Waltham Cross) for the Bulgarian cultivar ‘Jantar’ is a fit for our accession, while parentage of Katta Kurgan and Perlette (parents of the Slovenian ‘Jantar’) does not fit.

Accession name

Marker 1

Marker 2

Marker 3

Marker 4

Marker 5

Marker 6

Marker 7

Marker 8

Marker 9

Marker 10

Marker 11

Marker 12

Marker 13

Marker 14

Queen of the Vineyard

179 179 170 171 384 394 245 247 176 182 199 213 225 225 155 161 188 205 137 158 141 156 248 253 191 197 239 241

Jantar 179 179 171 177 390 394 247 247 176 182 190 199 225 225 155 161 188 188 135 137 134 156 248 253 191 191 239 241 Waltham Cross 179 186 171 177 384 390 238 247 182 182 190 213 225 225 161 161 188 190 135 137 134 156 241 248 191 197 241 241 Katta Kurgan 180 185 169 171 397 397 245 253 176 191 199 201 236 238 155 170 190 190 137 162 151 156 245 255 197 197 237 246 Jantar 179 179 171 177 390 394 247 247 176 182 190 199 225 225 155 161 188 188 135 137 134 156 248 253 191 191 239 241 Perlette 179 186 170 177 392 394 245 251 176 178 190 213 225 238 155 157 190 205 137 158 141 156 245 253 191 197 228 241

are from breeding programmes situated in cooler climates, the adaptability of these cultivars to South African climate conditions needs to be evaluated. The genebank is also a valuable resource for the table and wine grape breeding programmes of the ARC. Pollen is Directorate of Plant Genetic Resources (DALRRD) to collect ampelographic data for cultivar descriptions and authenticity. These reference cultivars are also used for comparison (DUS examination) when new applications for Variety Listing and/or Plant Breeders’ Rights are filed. Recently, plant material has been supplied to Plant Improvement Organisations and researchers at ARC and Stellenbosch University. Plant material included dormant wood that was supplied for industry cultivar evaluation, rootstock research and grafting in a demonstration/training vineyard at Stellenbosch University. Researchers also collected and crosses made in the field blocks. The genebank accessions are utilised by the

collected fruit (mostly table grapes) and flowers for various projects. Access to accessions in the genebank The genebanks maintained at various ARC institutes have been designated as public good/national assets and thus many of the accessions are available to the grape industry for research, evaluation and potentially commercial production. Not all accessions are freely available, as there may be non propagation agreements or Plant Breeders’ Rights restrictions in place. Currently, DALRRD is the biggest funder, but all three grape industries (wine, table and raisin grapes) contribute financially to the maintenance of the genebank vineyards. A final word The genebank is a valuable resource, and the contributions of lesser-known cultivars may become important in the future, especially given current climate change tendencies and a drive towards more environmentally friendly practices that may favour planting more disease-tolerant cultivars. 

References https://www.wineland.co.za/the-grapevine-collection-at-arc-infruitec-nietvoorbij/

For more information, contact Phyllis Burger at burgerp@arc.agric.za.

TECHNICAL YEARBOOK 2024

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