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Enhanced germination, emergence and seedling vigour of Leucaena leucocephala using hardening hydration and acid shock treatments

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Germination, emergence and seedling vigour of Leucaena leucocephala cv. Cunningham were investigated under acid stress conditions following the exposure of seeds to pregerminative hydration-dehydration and acid shock treatments (seed hardening). A combination of partial hydration in distilled water with an acid shock treatment (immersion in acidified water at pH 5.0) for 1 h increased germination from 12% to 42% in acid conditions. In an acid soil, partial hydrations in distilled water in combination with either or without an acid shock were the best procedures for increasing seedling emergence (from 20% to 52%) and aboveground and underground biomass. Seed hardening treatments promoted germination but also appear to have improved resistance to acid stress.
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Document Type: Research Article

Publication date: April 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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