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Mark K. Ehlenfeldt and Matthew Kramer

, development time, etc. ( Coville, 1921 ; Ehlenfeldt, 2001 ; Meader and Darrow, 1947 ). In contrast, rabbiteye blueberry ( V. ashei Reade) cultivars are considered overwhelmingly self-incompatible ( Brightwell et al., 1955 ; El-Agamy et al., 1981 ) and

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D. Scott NeSmith

Poor fruit set and small berry size can limit production of rabbiteye blueberries ( Vaccinium ashei Reade) grown in the southeastern United States ( Scherm et al., 2001 ). Some factors that affect fruit set include pollinator population during

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Qin Yang, Er Liu, Yan Fu, Fuqiang Yuan, Tingting Zhang, and Shu Peng

Blueberry is a perennial evergreen or deciduous shrub that is native to North America ( Wang et al., 2017 ). Northern highbush blueberry ( Vaccinium corymbosum ), rabbiteye blueberry, and southern highbush blueberry ( V. corymbosum interspecific

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S.L. Noffsinger, A.D. Draper, and C.L. Gupton

Although southern highbush (Vaccinium sp.) is replacing rabbiteye (Vaccinium ashei L.) blueberry, rabbiteye will continue to be grown on marginal soils of the southeastern United States. Dwarfism or short, compact growth habit is a trait that could be used to reduce labor costs in rabbiteye blueberry production. Parental backgrounds, and flowering and fruit traits were studied in seven Mississippi (MS) and five Georgia (T) selections. Six of the MS selections are available for propagation and bloom late enough that cold damage should not be a problem. Four (MS63, MS454, MS546, MS891) of the six have acceptable fruit quality and will be used in breeding. Ethel and MS134 were the only known dwarf ancestors, with Ethel, Myers, Black Giant, and Tifblue (Ethel × Clara) dominating the parental background. Based on the variation in growth habit and ancestries, it would appear that Ethel has several genes for dwarfism and multiple allelic interactions are involved, similar to what Garvey and Lyrene found (1987). Future breeding will include crosses of MS63, MS454, MS546, and MS891 with germplasm outside of the common ancestors, to broaden the genetic base of the dwarf rabbiteyes.

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Stephen J. Stringer, Arlen D. Draper, Donna Marshall-Shaw, Blair J. Sampson, and John J. Adamczyk Jr.

Rabbiteye blueberries ( Vaccinium ashei Reade = V . virgatum Aiton) are native to the southeastern United States and due to their broad adaptation, vigor, and high yield potential, rabbiteye blueberry cultivars are grown widely throughout the

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Stephen J. Stringer, James M. Spiers, Donna A. Marshall, and Arlen D. Draper

The rabbiteye blueberry is the predominant type of blueberry currently being grown commercially in the southeastern United States. In the Gulf Coast region of the southeast, growers require earlier ripening blueberry cultivars adapted to the

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Tripti Vashisth and Anish Malladi

fruit detachment in response to mechanical shaking were investigated in rabbiteye blueberry. Materials and Methods Anatomy of the peduncle–pedicel junction and the fruit–pedicel junction. To study the anatomy of the potential points of fruit detachment

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Esendugue Greg Fonsah, Gerard Krewer, Kerry Harrison, and Danny Stanaland

Rabbiteye blueberry is the most important blueberry grown in Georgia. An estimated 4.95% of the 6003 acres of blueberries grown in Georgia are rabbiteye blueberry ( Florkowski, 2004 ). This species is classified as a highbush blueberry type, but is

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Patricio Brevis, Scott NeSmith, and Lynne Seymour

Poor fruit set is one of the most important horticultural problems of the rabbiteye blueberry industry. Rabbiteye blueberries require cross-pollination and several bee species are expected to transfer pollen from one cultivar to another. A novel method was developed to measure bee-mediated pollen dispersion in rabbiteye blueberry. Pollen diameters were used to predict the proportion of cross-pollen in bumble bees' pollen load. Bumble bees visiting blueberry flowers had low proportions of cross-pollen. It is proposed that inadequate levels of cross-pollination play a major role in the failure of rabbiteye blueberries to set adequate commercial crops. The composition of bees' pollen load changed with the phenology of the crop. Data indicate that the greatest likelihood for cross-pollination occurred around the time of maximum bloom overlap of the two studied cultivars.

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Eric T. Stafne and Barbara J. Smith

Rabbiteye blueberry ( Vaccinium virgatum ) bushes can live for many years, but if they are not well maintained they can lose vigor and fruiting productivity ( Stafne et al., 2020 ). Renovation pruning is a way to re-invigorate bushes by severely