Self- and cross-fertility in recently released highbush blueberry cultivars
2001
Ehlenfeldt, M.K.
Self- and cross-fertility were evaluated in the highbush blueberry (Vaccinium corymbosum L.) cultivars Bluegold, Duke, Legacy, Nelson, Sierra, Sunrise, and Toro, all of which have been released since 1985, by comparing them with 'Bluecrop' and 'Rubel', which were used as standards. Cross-pollination increased fruit set in all cultivars except 'Bluecrop', in which set was reduced 13%. The average increase among recently released cultivars was 43%. Cross-pollination also increased fruit weight for all cultivars except 'Rubel'. Average increase in fruit weight with cross-pollination of the recently released cultivars was 27%. Fruit set and fruit weight measurements suggest that 'Duke', 'Legacy', and 'Nelson' would perform satisfactorily in solid stands, and that 'Sierra' and 'Toro' probably need cross-pollination for maximum yields.
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