EVALUATION OF PARENTAL GENOTYPES AS A TOOL FOR PLANNING THE MATING DESIGN IN KIWIFRUIT BREEDING PROGRAMS

R. Testolin, G. Cipriani, G. Fiori, L. Piccinini, G. Costa
Evaluation of parental genotypes for their general and specific combining ability (GCA and SCA) allows selection of good parents in mating designs that can help breeding programs succeed and produce valuable progeny. We developed 84 controlled crosses arranged in three North Carolina Model 2 (NCM2) mating designs, in which tetraploid A. chinensis female and male genotypes were crossed to each other in all compatible combinations. We were able to evaluate in such a way 6 pistillate and 16 staminate genotypes for their combining ability in transferring characters of agronomic interest to their progeny. The key characters evaluated in 6,911 seedlings were time of bud burst, flowering time, number of flowers/cyme; the traits evaluated only in female progeny were crop load, fruit size, and time of maturity. The narrow sense heritability of characters (h2) is also discussed in view of the selection strategy.
Testolin, R., Cipriani, G., Fiori, G., Piccinini, L. and Costa, G. (2011). EVALUATION OF PARENTAL GENOTYPES AS A TOOL FOR PLANNING THE MATING DESIGN IN KIWIFRUIT BREEDING PROGRAMS. Acta Hortic. 913, 213-219
DOI: 10.17660/ActaHortic.2011.913.27
https://doi.org/10.17660/ActaHortic.2011.913.27
Actinidia, heritability, NCM2, progeny test, combining ability
English

Acta Horticulturae