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ISTA Seed Health Committee Official Method Review  

The Seed Health Method Validation Programme requires that methods approved as Official Methods should be reviewed every 5 years to ensure their continuing effectiveness and suitability. Official Seed Health Testing Methods are found in the International Rules for Seed Testing 2011, Annexe to Chapter 7, Seed Health Testing Methods. There are currently 13ISTA Official Seed Health Testing Methods that are now due for review (listed in Table 1).   With the exception of Method 7-021, this is the second review for Methods 7-003 to Methods 7-014. Table 1 lists the actions taken since the last review as a result of feedback received. TheISTA Seed Health Committee (SHC) would like to receive your feedback on the current Method Sheets as part of the review process.  

Table 1. The 13 ISTA Official Seed Health Testing Methods to be reviewed in 2011
Method Pathogen Host Action by SHC since last review
7-003 Botrytis cinerea Helianthus annuus 1. Introduced wording to allow use of different ‘blotter’ papers where equivalent.2.  Re-evaluated the use of 3% Malt Agar. Changes to be introduced in 2012 (Seed Testing International, April, 2011)
7-004 Leptosphaeria maculans formerly Phoma lingam   Brassicaceae formerly Brassica spp.   Data from 2002 Comparative Test (CT) rejected.New CT being organized (2011) with objective to remove use of 2,4,D for freezer blotter method.
7-005 Ascochyta pisi Pisum sativum   Extention of method for 2 further pathogens (Mycosphaerella pinodes & Phoma medicaginis var. pinodella) CT completed 2011 and submitted toISTA for approval UnderISTA Method Validation Programme.
7-006 Colletotrichum lindemuthianum Phaseolus vulgaris -
7-007 Botrytis cinerea Linum usitatissimum New working group established and work ongoing to align methods 7-007,7-017 &7.018.
7-008 Caloscypha fulgens Picea engelmanii and Picea glauca -
7-009 Fusarium moniliforme var. subglutinans (Fusarium circinatum) Pinus taeda and Pinus elliotti - SHC maintaining links with Plant Protection Organisations on new proposals for testing this quarantine pathogen. Decision whether to withdraw method being considered
7-010 Drechslera oryzae Oryza sativa -
7-011 Pyricularia oryzae Oryza sativa -
7-012 Alternaria padwickii Oryza sativa -
7-013 Ustilago nuda Hordeum vulgare Lactophenol replaced by lactic acid method in 2008. 
7-014 Septoria nodorum Triticum aestivum No progress for aligning with Method 7-022 Microdochium spp.
7-021 Xanthomonas axonopodis pv. phaseoli and X.axonopodis pv. phaseoli var. fuscans Phaseolus vulgaris N/A First review.

To help us we would be pleased if you could answer the questions in the accompanying questionnaire and return it to the ISTA Secretariat by 15 December 2011 by fax to: +41 44 838 60 01 or by email to: tcom2@ista.ch.  
  ISTA Seed Health Committee Method Review Questionnaire 2011

07.10.2011 (ne)

 


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