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Improving controlled pollination methodology for breeding Acacia mangium Willd

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posted on 2023-05-17, 04:28 authored by Anthony Griffin, Vuong, TD, Jane HarbardJane Harbard, Wong, CY, Brooker, C, Rene VaillancourtRene Vaillancourt
Acacia mangium is a major plantation species for the pulp and paper industry in south-east Asia and there are a number of active breeding programs. The species is predominantly outcrossing, but with a demonstrated capacity to set selfed seed where outcross pollen is limited, with consequent inbreeding depression in the progeny. Current controlled pollination methods therefore include a time-consuming emasculation step. We used microsatellite genotyping of seedlings to determine the consequences of outcross pollination with and without emasculation. Only 1 of 3 mother trees set a small amount (5%) of selfed seed. Using whole inflorescences from the male parent as the pollen applicator rather than sieved pollen reduced outcross contamination rates from 19.1 to 8.7% and substantially increased worker productivity. Application of sugar solution to the female flowers immediately prior to pollination increased yield of sound seeds per spike. Additional improvements to the pollination protocols are discussed. © 2010 Springer Science+Business Media B.V.

History

Publication title

New Forests: Journal of Biology, Biotechnology, and Management of Afforestation and Reforestation

Volume

40

Pagination

131-142

ISSN

0169-4286

Department/School

School of Natural Sciences

Publisher

Kluwer Academic Publ

Place of publication

Van Godewijckstraat 30, Dordrecht, Netherlands, 3311 Gz

Repository Status

  • Restricted

Socio-economic Objectives

Harvesting and transport of forest products

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