ANNEX

Conditions for placing on the market of pre-basic seed potatoes as Union grades PBTC and PB
1. The conditions for pre-basic seed potatoes of Union grade PBTC shall be as follows:
  1. conditions concerning seed potatoes:
    1. plants not breeding true to the variety, or plants of a different variety, shall not be present in the crop;
    2. plants, including tubers, are produced through micro-propagation;
    3. plants, including tubers, are produced in a protected facility and in a growing medium which is free from pests;
    4. tubers shall not be multiplied beyond the first generation;
    5. plants shall comply with the following thresholds concerning the presence of RNQPs, or symptoms caused by the respective RNQP, as set out in the following table:
RNQPs or symptoms caused by RNQPs | Threshold for the presence of RNQPs on the growing plants for pre-basic seed potatoes of Union grade PBTC
Blackleg ( Dickeya Samson et al . spp. [1DICKG]; Pectobacterium Waldee emend. Hauben et al . spp. [1PECBG]) | 0 %
Candidatus Liberibacter solanacearum Liefting et al . [LIBEPS] | 0 %
Candidatus Phytoplasma solani Quaglino et al . [PHYPSO] | 0 %
Mosaic symptoms caused by viruses and symptoms caused by Potato leaf roll virus [PLRV00] | 0 %
Potato spindle tuber viroid [PSTVD0] | 0 %
RNQPs or symptoms caused by RNQPs | Threshold for the presence of RNQPs on the direct progeny of pre-basic seed potatoes of Union grade PBTC
Symptoms of virus infection | 0 %.
  2. conditions concerning lots:
    1. they shall be free from seed potatoes affected by rots;
    2. they shall be free from seed potatoes affected by common scab;
    3. they shall be free from seed potatoes excessively shrivelled due to dehydration;
    4. they shall be free from seed potatoes with external blemishes, including misshapen or damaged tubers;
    5. lots of pre-basic seed potatoes shall comply with the following thresholds concerning the presence of RNQPs, or symptoms caused by the respective RNQPs as set out in the following table:
RNQPs or symptoms caused by RNQPs | Threshold for the presence of RNQPs on the lots of pre-basic seed potatoes of Union grade PBTC by mass
Candidatus Liberibacter solanacearum Liefting et al . [LIBEPS] | 0 %
Ditylenchus destructor Thorne [DITYDE] | 0 %
Black scurf as caused by Thanatephorus cucumeris (A.B. Frank) Donk [RHIZSO] | 0 %
Powdery scab as caused by Spongospora subterranea (Wallr.) Lagerh. [SPONSU] | 0 %.
2. The conditions for pre-basic seed potatoes of Union grade PB shall be as follows:
  1. conditions concerning seed potatoes:
    1. the number of plants not breeding true to the variety and the number of plants of a different variety together, shall not exceed
0,01
%;
    2. plants shall comply with the following thresholds concerning the presence of RNQPs, or symptoms caused by the respective RNQPs, as set out in the following table:
RNQPs or symptoms caused by RNQPs | Threshold for the presence of RNQPs on the growing plants for pre-basic seed potatoes of Union grade PB
Blackleg ( Dickeya Samson et al . spp . [1DICKG]; Pectobacterium Waldee emend. Hauben e t al . spp . [1PECBG]) | 0 %
Candidatus Liberibacter solanacearum Liefting et al . [LIBEPS] | 0 %
Candidatus phytoplasma solani Quaglino et al . [PHYPSO] | 0 %
Mosaic symptoms caused by viruses and symptoms caused by Potato leaf roll virus [PLRV00] | 0,1 %
Potato spindle tuber viroid [PSTVD0] | 0 %
RNQPs or symptoms caused by RNQPs | Threshold for the presence of RNQPs on the direct progeny of pre-basic seed potatoes of Union grade PB
Symptoms of virus infection | 0,5 %;
  2. tolerances applicable to lots, as regards the following impurities, blemishes and diseases:
    1. seed potatoes affected by rots, other than ring rot or brown rot, shall not exceed
0,2
% by mass;
    2. seed potatoes affected by common scab over more than one third of their surface, shall not exceed
5,0
% by mass;
    3. shrivelled tubers due to excessive dehydration or dehydration caused by silver scurf, shall not exceed
0,5
% by mass;
    4. seed potatoes with external blemishes, including misshapen or damaged tubers, shall not exceed
3,0
% by mass;
    5. the presence of earth and extraneous matter shall not exceed
1,0
% by mass;
    6. lots of pre-basic seed potatoes shall comply with the following thresholds concerning the presence of RNQPs, or symptoms caused by the respective RNQPs as set out in the following table:
RNQPs or symptoms caused by RNQPs | Threshold for the presence of RNQPs on the lots of pre-basic seed potatoes of Union grade PB by mass
Candidatus Liberibacter solanacearum Liefting et al . [LIBEPS] | 0 %
Ditylenchus destructor Thorne [DITYDE] | 0 %
Black scurf affecting tubers over more than 10 % of their surface as caused by Thanatephorus cucumeris (A.B. Frank) Donk [RHIZSO] | 1,0 %
Powdery scab affecting tubers over more than 10 % of their surface as caused by Spongospora subterranea (Wallr.) Lagerh. [SPONSU] | 1,0 %;
    7. the total percentage of seed potatoes covered by tolerances, as referred to in points (i) to (iv) and (vi), shall not exceed
6,0
% by mass.
Substituted by Commission Implementing Directive (EU) 2020/177 of 11 February 2020 amending Council Directives 66/401/EEC, 66/402/EEC, 68/193/EEC, 2002/55/EC, 2002/56/EC and 2002/57/EC, Commission Directives 93/49/EEC and 93/61/EEC and Implementing Directives 2014/21/EU and 2014/98/EU as regards pests of plants on seeds and other plant reproductive material (Text with EEA relevance).