ISHS Acta Horticulturae 579: II Balkan Symposium on Vegetables and Potatoes
SELF-INCOMPATIBILITY TEST IN CABBAGE (BRASSICA OLERACEA VAR. CAPITATA) |
| Authors: | M. Hallidri, D. Pertena |
| Abstract:
Nine different lines of head cabbage Brassica oleracea var. capitata were tested for their ability of self-incompatibility. To overcome the self-incompatibility, bud pollination was used. There were differences in fertility ratio between lines and especially in their behavior of self-incompatibility. Some had regularity in decreasing fertility ratio after each generation, while others had a high variability in it. The lines nr.2, nr.3, nr.4 and nr.5 had the strongest self-incompatibility, thus they were the best ones to be used as parental lines in a seed production program. The results of the fertility ratio over 4 years revealed that the lines nr.8, nr.4 and nr.2, after every generation of selfing, improved self?incompatibility, so it’s possible to be used as parental lines in hybrid seed production. In this case it was supposed that self-incompatibility is controlled by a major gene system. There were some other lines, which showed variability in fertility ratio after each generation of selfing. Based on these findings it is believed that self-incompatibility is controlled by a polygene system and it is very difficult to obtain pure lines with strong self-incompatibility. Testing the self-incompatibility needs some years of selfing. The lines, which showed variability in fertility ratio in the first three years, had to be discarded.n | |
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