ISHS Acta Horticulturae 423: II Workshop on Pollination
INHERITANCE OF SELF-FERTILITY IN SWEET CHERRIES (FROM STELLA CULTIVAR) AND PRODUCTIVITY OF SEEDLINGS |
| Author: | J. Blazková |
| Keywords: | Autogamy, breeding, pollination relations |
| Abstract:
From 1985 to 1994 efficiency of autogamy as well as flowering abundancy and fruit set were evaluated using 165 seedlings from 7 parental combinations derived from crosses with cv. Stella. Self-fertile seedlings segregated in shares from 40 to 69% in progenies of cultivars which carry the S3 allele of incompatibility. In 2 progenies, which did not carry S3, these shares were 13 and 28%. All seedlings were self-sterile, however, if cv. Stella was used as mother parent. These findings suggest that self-fertility of Stella is controlled by extra-nuclear inheritance probably carried by plastids. The original mutation in the S4 allele could be induced as a mutation of the heteroplazmon type, which could explain the variability in the segregation of self-fertility that was found even with a linkage to S alleles. After open pollination the self-fertile seedlings were 5–10% more productive than the self-sterile seedlings. This result however, was found under a almost ideal distribution of pollinizers and an abundance of bees. | |
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