BREEDING VALUE OF PARENTS IN KIWIFRUIT (ACTINIDIA DELICIOSA)

Genetic studies were conducted on an Actinidia deliciosa (A. Chev.) C.F Liang et A.R. Ferguson var. deliciosa breeding population in New Zealand using two factorial mating designs.
Almost 400 female vines were assessed, in 1995/1996, for vegetative and fruit characters.
Data showed significant genetic variation existed for female and male general combining abilities (GCA) in several characters.
Breeding values of the respective factorial parents were calculated and the results showed male arrays (GCA_male) were equally as potent as female arrays (GCA_fem) for their effect on female offspring’s fruit characters.
Narrow sense (individual plant) heritabilities were estimated for 14 vegetative and fruit characters.
Genetic gains (responses) were estimated for one cycle of full sib breeding using three selection strategies, individual, family and combined.
Results showed combined selection optimised response for 8 of the 14 characters while individual selection optimised response for the other 6 characters.
Generally, those characters optimised by combined selection had narrow sense heritabilities of <0.45, while those characters optimised by individual selection had narrow sense heritabilities of>0.45.

IV International Symposium on Kiwifruit

H. Marsh, M. McNeilage, I. Gordon

Actinidia deliciosa var. deliciosa, genetic variation, narrow sense heritability, selection strategies

https://doi.org/10.17660/ActaHortic.1999.498.9