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Sand priming in relation to physiological changes in seed germination and seedling growth of waxy maize under high-salt stress

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Seeds of three waxy maize (Zea mays L.) cultivars, cv. Suyunuo 1, Huyunuo 1 and Zhenuoyu 1, were used to investigate the effects of sand priming on germination and physiological changes under a high-salt concentration (1% NaCl) stress. Waxy maize seeds were mixed with sand containing 4% (v/w) water, sealed in plastic box, and then were primed at 15°C for 48 h. While sand priming significantly affected the speed of germination in two cultivars, and contributed to shorten mean germination time for the three cultivars studied. It also significantly enhanced shoot height, seedling fresh and dry weight in the three cultivars compared to unprimed control. Sand priming also increased the content of soluble sugar and the activities of peroxidase (POD) and catalase (CAT). At the same time, the malondialdehyde (MDA) and proline (Pro) accumulation decreased under a high-salt stress condition. Thus, it indicated that sand priming could improve speed of germination and seedling growth, suggesting beneficial effects on salt tolerance of waxy maize seedlings.
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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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