Citrus Pollen Storage1

in HortScience
Authors:
N. SaharInstitute of Horticulture, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel

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P. Spiegel-RoyInstitute of Horticulture, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel

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Abstract

The storage life of ‘Clementine’ mandarin (Citrus reticulata Blanco) and Poncirus trifoliata (L.) Raf. pollen was effectively extended in an oxygen-free atmosphere. ‘Clementine’ pollen held at 4°C enabled satisfactory germination (20%) up to 7 weeks; a similar rate of germination was maintained after 20 weeks by use of N atmosphere. By combining deepfreeze temperatures (−18°) with either N or CO2 atmosphere for pollen storage, a germination rate of 13% was maintained after 57 weeks. With Poncirus, lower germination rates were obtained (7-9% after 57 weeks), but results paralleled those obtained with ‘Clementine’ mandarin pollen. Poncirus pollen, stored in an oxygen-free atmosphere at −18° for one year, maintained its fertilizing capacity.

Contributor Notes

Received for publication June 23, 1979. Contribution No. 179-E from Agricultural Research Organization, Israel.

The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper must therefore be hereby marked advertisement solely to indicate this fact.

This constitutes part of a MSc Thesis of the first author submitted to the Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot.

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