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Seed germination of two tomato cultivars following matriconditioning under optimal and stress temperatures

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Seeds of two cultivars of Lycopersicon esculentum Mill.: New Yorker (NY) and Beta (BT), differing in vigor, were matriconditioned (MC) using Micro-Cel E. MC improved germination of seeds of both cultivars at optimal temperatures, a particularly strong improvement being seen at suboptimal temperature (10° and 15°C). At 10°C, the matriconditioned NY and BT seeds reached T50 15.1 and 7.16 days earlier, respectively, than unprimed seeds did. MC was able to alleviate thermoinhibition (35° and 40°C) in the BT seeds only. Matriconditioning improved seedling emergence both in the growth chamber and in the field, the effect being more distinct in BT than in NY. The fresh and dry weights of the seedlings obtained from matriconditioned seeds of both cultivars were higher than those of the unprimed seeds, but the MC effect was more pronounced in the BT seeds. The MC effect was higher when GA4+7 was added during the treatment. The beneficial effect of MC alone or in combination with GA4+7 on germination is partially (in NY) or almost completely (in BT) related to the significant increase in the activity of endo-β-mannanase.
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Document Type: Research Article

Publication date: October 1, 2007

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  • Seed Science and Technology (SST) is one of the leading international journals featuring original papers and review articles on seed quality and physiology as related to seed production, harvest, processing, sampling, storage, distribution and testing. This widely recognised journal is designed to meet the needs of researchers, advisers and all those involved in the improvement and technical control of seed quality.
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