Articles

GENETIC PARAMETERS FOR FRUIT TRAITS OF INTERSPECIFIC ACTINIDIA HYBRIDS

Article number
913_9
Pages
89 – 96
Language
English
Abstract
The genus Actinidia contains many species that have an array of novel traits of potential commercial interest.
We have initiated an interspecific hybridisation programme to introgress some of these novel traits into commercial kiwifruit.
Thus we need to have an understanding of the genetic behaviour of interspecific hybrids.
We report on the fruiting characteristics of two interspecific Actinidia hybrid populations.
Plants were harvested over five seasons (2006-2010). Key traits measured included average fruit weight, estimated yield, dry matter, soluble solids, fruit firmness, titratable acidity and vitamin C content.
A mixed modelling approach for the analysis of data was used to derive estimates of narrow sense heritability for four traits and the genetic correlations between them.
In addition, empirical breeding values were obtained for each genotype and selection indices developed.
The implications of these estimates in breeding for improved commercial cultivars of Actinidia species are discussed.

Publication
Authors
R.A. Beatson, P.A. Alspach, A.J. Currie, P.M. Harris-Virgin, A. White
Keywords
genetic analysis, kiwifruit, mixed model analysis, plant breeding, selection index
Full text
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