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The Pollination of Onion (Allium cepa L.) to Produce Hybrid Seed
Ingrid H. Williams and J. B. Free
Journal of Applied Ecology
Vol. 11, No. 2 (Aug., 1974), pp. 409-417
Published by: British Ecological Society
Stable URL: http://www.jstor.org/stable/2402194
Page Count: 9
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(1) In general, bees collecting nectar only, as well as bees collecting nectar and pollen, preferred male-fertile to male-sterile cultivars of onion plants, but moved between male-fertile and male-sterile umbels sufficiently to effect adequate pollination. (2) Restricting male-fertile plants to one row in nine, with rows 0.6 m apart gave little or no reduction in set. (3) Male-fertile cultivars differed in their attractiveness to bees.
Journal of Applied Ecology © 1974 British Ecological Society