1. Australian Centre for Plant Functional Genomics, School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Glen Osmond, SA 5064, Australia.
2. CSIRO Food Futures National Research Flagship, Kintore Avenue, Adelaide, SA 5000, Australia.
3. Australian Centre for Plant Functional Genomics, School of Botany, University of Melbourne, Parkville, VIC 3052, Australia.
4. Corresponding author. Fax +61‐8‐8303‐7102. E‐mail: