b'ASSOCIATION NEWS Dr Stan Mathews delivering the ISTA workshop Figure 2. Radicle emergence for Allium cepa after 72 hours at 20 C, represented as boxplots per loton Vigour in Turkey in 2005for five laboratorieswere tested on five samples of Solanum lycopersicum (Fig. 4).The aim was to validate which combination is appropriate to evaluate greenhouse emergence or useable plant test. A comparative CD test with the best combination will be organised when the corresponding test plan is approved by ISTA.ISTA Rules ChangesAn ISTA Rules proposal was submitted for the extension of the RE test to Brassica species. Thanks to the ISTA Special Project 19-3, several results have been published (see Seed Testing International 163, p.21) and a comparative test round involving seven laboratories and ten seed Figure 3. Radicle emergence (RE) test assessment on Hordeum vulgare; seedling on the left has justlots has been organised (Fig. 5).germinated, the two others have radicles at least 2 mm longThe method 48 h at 20 C was validated as a vigour test for Brassica oleracea var. botrytis,B. oleracea var. capitata, B. juncea and B. rapa.Vigour Committee PublicationsAll chapters of the 4th edition of the ISTA Handbook for Vigour Test Methods are completed; illustrations are being sourced and a global review has been planned for 2025. 1. Catikkas, E., Kadioglu, N. and Demir, I. (2024). Combined vigour tests to estimate relative seedling emergence in the field and germination after storage in sweet corn seed lots. Seed Science and Technology, 52, 141152.2. Gallo, C. and Magnano, L. (2023). Radicle emergence test for soybean vigour testing. Seed Science and Technology, 51, 493503.3. Ilbi, H. and Korkmaz, A. (2024). Seed vigour testing. In: Balkaya, A. and Arn, L. (eds) Vegetable Seed Production Technology and its Figure 4. Boxplots for Solanum lycopersicum representing different methods of controlledCurrent and Innovative Applications [in Turkish]. deterioration (CD) at 47 C with seed moisture content adjusted to 25 or 30% and four ageing times,Iksad Publication House, Ankara, Turkey, pp. compared to standard germination on the left (FG) or saturated salt accelerated ageing (VA) 319358.SEED TESTING INTERNATIONAL OCTOBER 2025 51'