ISHS Acta Horticulturae 791: V International Symposium on Olive Growing
VEGETATIVE GROWTH OF OLIVE GENOTYPES FROM A DIALLEL CROSS |
| Authors: | D. Hassani, A. Tombesi |
| Keywords: | Olea europaea L., vegetative vigour, progeny, breeding |
| Abstract:
Vegetative growth of olive genotypes obtained from a complete diallel cross between nine olive cultivars in 2000, was evaluated in greenhouse during 2001-02. Total genotype number was 1578 at July 2001 that decreased to 1531 and 1506 plants respectively in March and October 2002. The highest dried plant percentage belongs to the seedlings of cv. Maurino and the least percentage belongs to Orbetana paternal and Kalamon maternal half-sib families. The seedlings of Kalamon, as female parent showed very rapid and vigorous growth. Maternal half-sib seedling of this cultivar showed a growth more than 25% respect to the overall mean and 56% respect to maternal half-sib families of cultivars Nostrale di Rigali and Dolce Agogia. The differences among paternal half-sib families were less than maternal groups. The genotypes of Moraiolo and Kalamon showed a difference of 6% respect to overall mean and 14% respect to genotypes of Frantoio and Dolce Agogia. The maternal half-sib genotypes of Nostrale di Rigali and Orbetana demonstrated a slower winter growth of 57% and 70% in comparison with the overall mean and Kalamon genotypes respectively. This difference was not observed among paternal groups. The estimated h2B for all characters resulted very high varying from 0.89 to 0.97. The h2N for internode length and progeny’s mean height in July 2001 resulted 0.75 but for the other characters estimated over 0.88. | |
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