Ref ID: 10771
Ref Type: Note
Authors: Huang, S., Shepherd, M., Eggler, P., Dieters, M. J., and Henry, R. J.
Series Title: Hot Off the Seed Bed
Pub Date: 21-3-2004
Number: 70
Edition:
Num Pages: 3
Editors:
Series Editor:
Publisher: CRC-SPF
Node: Lismore, NSW
Keywords: adventitious rooting/allele/effect/efficiency/F2/family/gene/genes/genetic/Hot off the Seed Bed/hybrid/hybrids/marker-aided selection/MAS/natural/pedigree/pine/Pinus caribaea var.hondurensis/Pinus elliotii var.elliotii/population/prospect/QTL/Queensland/rate/seed/selection/species/strike rates/study/system/trait/tree/trees/variation
Abstract: Applications of marker-aided selection (MAS) are thought to be limited because different genes are expressed in different families in trees. The efficiency of MAS in a population will be low as marker-trait associations must be re-established for each pedigree. However, study of strike rates in hybrid pines indicates this may not be the case for some adaptive traits (or traits that extensively share genetic systems with adaptive traits) in hybrid populations. If species undergo divergent selection in their natural populations, there may be little variation within a species and species may become fixed for contrasting alleles (genes). Large effects will then segregate in F2 and backcross of species hybrids. For MAS then, it may be sufficient to select genes on their species of origin ("species effects") and ignore minor allelic variation within species. This possibility increases the prospects of MAS at population level in hybrid populations
Notes: Entered by Mervyn Shepherd (07/05/2004)
Address:
Reprint: In File
Program: SPF Genetic Improvement
Project: A7; A7
Deliverable: A7-3; A7-3
Confidentiality: Confidential to All Partners
Availability: Online
Report: Annual Report 2003/4