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United States Department of Agriculture

Agricultural Research Service


item Mccollum, Thomas
item Bowman, Kim

Submitted to: Proceedings Florida State Horticultural Science
Publication Type: Proceedings
Publication Acceptance Date: 6/5/2005
Publication Date: 6/15/2005
Citation: Mccollum, T.G., Bowman, K.D. 2005. Fruit and juice quality of seedless pineaplle oranges on four rootstocks. 118:1-3 . Proceedings Florida State Horticultural Science.

Interpretive Summary: Irradiation of citrus seeds has been used to induced seedlessness to ‘Pineapple’ sweet oranges. This report describes the results of two field trails conducted to evaluate the performance of three seedless ‘Pineapple’ orange selections under semi-commercial conditions. The seedless selections produced good yields of high quality fruit. Based on results of several years data it appears that the seedless selections will be good candidates for public release.

Technical Abstract: Irradiation of seeds of Pineapple orange resulted in the generation of several mutants with reduced seed count. In order to determine the horticultural characteristics of these mutants, trees of three selections (1-10-8, 1-10-60, and 1-10-98) were propagated on four rootstocks (Swingle, Carrizo, Cleopatra mandarin, and sour orange) and field trials were established at two locations in Florida (Groveland and St. Cloud). Data has been collected over five harvest seasons (1994, 1995, 1996, 2002, 2003) on fruit yield and juice quality (color, soluble solids and total acidity). Fruit of each selection ripen in mid season as is the case with other pineapple oranges, but have significant differences in fruit characteristics. All three selections produce fruit with very few seeds; many fruit have no seeds. The low seed count could make theses selections much more valuable for the midseason fresh market fruit market than the pineapple oranges that are presently available.

Last Modified: 10/18/2017
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