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In order to study the effect of pollination by honeybee on seed yield and seed quality of three native Iranian varieties (Dorcheh Isfahan, Sephid Kashan and Ghermez Azarshahr), honeybee colonies were put adjacent to the onion fields which were planted at two different dates (27 March and 22 April). OniOn seed yield and seed quality increased considerably due to pollination by honeybee in all varieties.
Seed yield in each of three varieties in earlier date of planting (27 March) was more than later date of planting (22 April). Dorcheh Isfahan and Ghermez Azarshahr varieties produced approximately similar seed yield and more than Sephid Kashan variety.