1. Dep. of Crop and Soil Science Oregon State Univ. Corvallis OR 97331
2. Seed Research Centre, P.O. Box 85054 Lincoln Univ. Lincoln New Zealand
3. Victorian Dep. of Environment and Primary Industries Corner Eleventh St. and Koorlong Ave. Irymple VIC 3498 Australia
4. Agresearch Ltd. Lincoln Private Bag 4749 Christchurch 8140 NZ
5. College of Animal Science and Technology Shihezi Univ. Shihezi Xinjiang 832000 P.R. China
6. Seed Research Centre, P.O. Box 85054 Lincoln Univ. Lincoln NZ
7. Grasslanz Technology Limited Private Bag 11008 Palmerston North 4442 NZ