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Development and maturation of sesame (Sesamum indicum) seeds under different water regimes

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A field experiment was conducted to evaluate the effect of irrigation intervals and harvest at different stages of seed development on the quality of sesame seeds. Irrigation regimes (I1 = 70, I2 = 100 and I3 = 130 mm evaporation from a class-A evaporation pan) were assigned as main plot and harvest time (seeds harvested at 5-day intervals, starting from flowering) were allocated to subplots. Seed quality was determined by assessing germination percentage, seedling dry weight, electrical conductivity and 1000-grain weight. Seed quality attributes were not significantly affected by irrigation intervals. Seeds reached their highest quality at 30 days after anthesis and thereafter seed quality decreased. No significant interaction of irrigation × harvest time was detected, indicating that sesame seed quality improved with increasing seed maturity irrespective of irrigation regime. The results of the current research concur with Harrington's hypothesis, that seeds attain maximum quality at the end of the seed-filling period. However, higher water deficit (> 130 mm evaporation) may affect the quality of sesame seeds.
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Document Type: Research Article

Publication date: August 1, 2015

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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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