Journal Rio Grande Valley Horticultural Society
Star Ruby Grapefruit flowers cross-pollinated with Hudson or -Ruby Red Grapefruit pollen resulted in more fruit produced than did flowers that were self-pollinated. Star Ruby lacks the ability to set fruit without pollination. Cross pollination, using Hudson pollen, resulted in fruit that was larger than fruit resulting from self pollination. The number of seeds per fruit was not significantly affected by pollen donor.
Burger, David W., "Pollination and Fruit Set of Star Ruby Grapefruit" (1982). Bu. Paper 12.
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