Journal
PLANT SCIENCE
Volume 170, Issue 1, Pages 37-43Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.plantsci.2005.07.023
Keywords
citrus; copper; parthenocarpy
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The addition of 25 mg l(-1) Of CuSO4 center dot 5H(2)O to the germination media significantly inhibited the in vitro pollen germination of 'Fortune' mandarin. Furthermore, when this was applied 8 h after in vitro germination it halted pollen tube development. The same concentration applied to 'Clemenules' mandarin flowers, at the preanthesis stage and 2 h prior to pollination with 'Fortune' mandarin pollen, arrested pollen tubes in the upper region of the style, and the average number of seeds per fruit was significantly reduced by 96%. Finally, 25 mg l(-1) of CuSO4 center dot 5H(2)O when applied at full bloom to entire 'Afourer' tangor trees under cross-pollination conditions, significantly reduced the average number of seeds per fruit by 55-81% and significantly increased the percentage of seedless fruits, without reducing fruit yield. (c) 2005 Elsevier Ireland Ltd. All rights reserved.
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