Transcript and A.auriculiformis (10 clones)

ACIAR Project FST 2008/007
Advanced breeding and deployment
methods for tropical acacias (2009-13)
Follows “Development and evaluation of sterile triploids and polyploid breeding methodologies
for commercial species of acacia in Vietnam, South Africa and Australia. (FST/2003/002)
•
University of Tasmania School of Plant Science
(Project Leader Prof Rod Griffin)
•
CSIRO (Dr Chris Harwood)
•
Research Centre for Forest Tree Improvement,
Forest Science Institute of Vietnam
(Project Leader Dr Ha Huy Thinh)
Context
•>600,000 hectares acacia in Vietnam
•Acacia export woodchips in 2011 = $600M
Project objectives
1. Design and implement an efficient strategy for large-scale
production, testing and deployment of new acacia hybrid clones
for use by tree growers throughout Vietnam
2. Refine and demonstrate seed-based deployment strategies for
Acacia mangium
3. Continue the development of new polyploid acacia varieties with
potential for improved wood properties and reproductive sterility
Year
1995
Objective 1: breeding strategy
Acacia
auriculiformis
breeding
Aa
Am
mangium
tetraploids
established 2003
F1
2006
auriculiformis
tetraploids
established
2012
Aa
Test and
mass-propagate
best hybrid clones
Am
F1
2012
Acacia
mangium
breeding
Am-4X seed
300 new diploid hybrid clones
from project under test 2012
Polyploid breeding options emerging, many opportunities:
•AM-4x wood shown to have superior fibre length and stiffness
•First triploid hybrids (Aa-2X × Am-4X) under trial – seedless?
•Tetraploid hybrid clones under trial
•Superior open-pollinated Am tetraploid families (selfed) under trial
•Control-pollinated crossing continuing
Objective 2: clonal family forestry
Multiplying limited seed of superior trees from breeding
program by hedging seedlings and rooting stem cuttings
3 years of trials at Ba Vi nursery approaching completion
Clonal hedges
Rooted cuttings for field trial
comparing cuttings and seedlings
Objective 3:
Polyploid breeding at Bau Bang, southern Vietnam
Grafted clone bank for easy controlled pollination
auriculiformis
diploid
mangium
tetraploid
mangium
diploid
Original clonal orchard has alternate rows of different
species and ploidy levels to promote inter-ploidy
pollination
Superior (selfed) tetraploid
families from open-pollination
A few triploids
produced, under test!
Impacts, John Allwright students, publications
• Seedless triploids, new diploid hybrids, and tetraploid hybrid clones
and families with improved wood properties, for plantation forestry
in Vietnam (600,000 ha acacias) and other tropical countries.
• ACIAR-supported review of commercialization prospects, 2013
• JAFs
Mr Tran Duc Vuong:
Ms Nghiem Quyn Chi
MSc UTas (2009),
PhD UTas (2012)
• 7 peer-reviewed journal papers from the projects already
published/in press, more in preparation
• IUFRO Acacia breeding and silviculture working party initiated
2013, FSIV to host international conference 2014