Open Access Research article

Production of haploids and doubled haploids in oil palm

Jim M Dunwell1*, Mike J Wilkinson2*, Stephen Nelson3, Sri Wening4, Andrew C Sitorus4, Devi Mienanti4, Yuzer Alfiko4, Adam E Croxford2, Caroline S Ford2, Brian P Forster5 and Peter DS Caligari356

Author Affiliations

1 School of Biological Sciences, University of Reading, Whiteknights, Reading, RG6 6AS, UK

2 Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, SY23 3DA, UK

3 Sumatra Bioscience Pte Ltd, 8 Eu Tong Sen Street, #16-94/95 The Central, 059818, Singapore

4 PT Sumatra Bioscience, Bah Lias Research Station, North Sumatra, Indonesia

5 BioHybrids International Ltd, Earley, Reading, RG6 5FY, UK

6 Instituto de Biología Vegetal y Biotecnología, Universidad de Talca, 2 Norte 685, Talca, Chile

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BMC Plant Biology 2010, 10:218  doi:10.1186/1471-2229-10-218

Published: 7 October 2010

Abstract

Background

Oil palm is the world's most productive oil-food crop despite yielding well below its theoretical maximum. This maximum could be approached with the introduction of elite F1 varieties. The development of such elite lines has thus far been prevented by difficulties in generating homozygous parental types for F1 generation.

Results

Here we present the first high-throughput screen to identify spontaneously-formed haploid (H) and doubled haploid (DH) palms. We secured over 1,000 Hs and one DH from genetically diverse material and derived further DH/mixoploid palms from Hs using colchicine. We demonstrated viability of pollen from H plants and expect to generate 100% homogeneous F1 seed from intercrosses between DH/mixoploids once they develop female inflorescences.

Conclusions

This study has generated genetically diverse H/DH palms from which parental clones can be selected in sufficient numbers to enable the commercial-scale breeding of F1 varieties. The anticipated step increase in productivity may help to relieve pressure to extend palm cultivation, and limit further expansion into biodiverse rainforest.