ISHS Acta Horticulturae 297: II International Symposium on Kiwifruit
INHERITANCE OF FRUIT CHARACTERS IN ACTINIDIA DELICIOSA |
| Author: | R.A. Beatson |
| Keywords: | plant breeding, quantitative genetics, heritability, recurrent selection |
| Abstract:
There has been very little published on kiwifruit quantitative genetics. The objective of this study was to examine how some fruit characters of commercial importance in kiwifruit are inherited. The genetic information was derived from a seedling population belonging to 17 maternal half sib families. Also included in an adjacent trial area were the 17 female parents of the half sib seedling families. Ten fruit characters were measured on the same half sib seedlings and female parent vines over 2 seasons. Heritabilities were estimated from parent-offspring regression and variance components derived from the half sib genetic analysis. Six of the 10 characters had heritabilities greater than 0.5. Expected genetic gains were estimated for 3 recurrent selection procedures and their plant breeding implications discussed. Results show that phenotypic recurrent selection is the best and simplest population improvement procedure to utilise except for yield and fruit number. | |
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