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Influence of planting date, method of handling and seed size on supersweet sweet corn seed quality

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A supersweet sweet corn hybrid, Pacific H5, was planted at weekly intervals (P1 to P5) in spring in South-Eastern Queensland. All plantings were harvested at the same time resulting in immature seed for the last planting (P5). The seed was handled by three methods: manual harvest and processing (M1), manual harvest and mechanical processing (M2) and mechanical harvest and processing (M3) and later graded into three sizes (small, medium and large). After eight months storage at 12-14°C, seed was maintained at 30°C with bimonthly monitoring of germination for fourteen months and seed damage at the end of this period. Seed quality was greatest for M1 and was reduced by mechanical processing but not by mechanical harvesting. Large and medium seed had higher germination due to greater storage reserves but also more seed damage during mechanical processing. Immature seed from premature harvest (P5) had poor quality especially when processed mechanically and reinforced the need for harvested seed to be physiologically mature.
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Document Type: Research Article

Publication date: July 1, 2003

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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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