Tolerance of Acacia populations following inoculation with the Ceratocystis canker and wilt pathogen in Vietnam

Inoculations of two Acacia populations were used to estimate the level of genetic control for tolerance to Ceratocystis canker and wilt disease following inoculation with the causal pathogen, Ceratocystis manginecans . The first screening utilised a range of clones commonly established in Vietnam al...

Full description

Saved in:
Bibliographic Details
Published in:Tree genetics & genomes 2020-10, Vol.16 (5), Article 77
Main Authors: Brawner, Jeremy, Chi, Nguyen Minh, Chi, Nghiem, Glen, Morag, Mohammed, Caroline, Thu, Pham Quang, Kien, Nguyen Duc
Format: Article
Language:English
Subjects:
Acacia
Assessments
Biomedical and Life Sciences
Biotechnology
Canker
Ceratocystis
Cloning
Damage
Disease tolerance
Estimates
Forestry
Genetic control
Heritability
Inoculation
Lesions
Life Sciences
Original Article
Pathogens
Plant Breeding/Biotechnology
Plant Genetics and Genomics
Populations
Progeny
Screening
Seedlings
Signs and symptoms
Stems
Tree Biology
Wilt
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Inoculations of two Acacia populations were used to estimate the level of genetic control for tolerance to Ceratocystis canker and wilt disease following inoculation with the causal pathogen, Ceratocystis manginecans . The first screening utilised a range of clones commonly established in Vietnam along with new candidate clones and provided evidence that variation in wilt symptoms is under a moderate level of genetic control in current deployment populations. Subsequent assessments of tolerance in a pedigreed Acacia auriculiformis progeny trial indicated that internal lesion length assessments were less influenced by seedling height and produced higher heritability estimates than external lesion length assessments. Heritability estimates for damage to detached phyllodes following inoculation increased from 2 to 4 weeks, at which point many leaves were entirely damaged. Assessments of phyllode damage were more heritable than assessments of stem damage, and positive genetic correlations between stems and phyllode damage indicate that families will rank similarly for both traits. If validation trials confirm the results of this study in larger trees, screening as described herein may be used to develop acacia breeds with greater disease tolerance.
ISSN:1614-2942
1614-2950
DOI:10.1007/s11295-020-01470-y