Influence of planting date, method of handling and seed size on supersweet sweet corn seed quality
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.
Document Type: Research Article
Publication date: 01 July 2003
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