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News and insight for North America's fresh produce buyers
Carl Collen

BY CARL COLLEN

A Marathon, not a sprint

New early season mandarin variety has traits that could be advantageous for commercial growers

A Marathon, not a sprint

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Commercial citrus growers will soon see a new seedless mandarin variety that stays on the tree longer, two traits farmers seek, according to University of Florida (UF) scientists.

‘Marathon,’ an early season mandarin, is also easy to peel and tastes good, said Fred Gmitter, a professor of breeding and genetics at the UF Institute of Food and Agricultural Sciences (IFAS).

It will mature by October, though even earlier in some seasons and can hold onto the tree well into December, said Gmitter, who led the UF/IFAS team that developed the Marathon mandarin.

The long hang time benefits growers if they have limited labour or want to sell their produce at a time when they’ll get their best prices, Gmitter said.

“It’s unique in that it can hold on the tree for a long time and still maintain its fruit quality and post-harvest shelf life,” noted Gmitter, a faculty member at the UF/IFAS Citrus Research and Education Center in Lake Alfred, Florida. The fruit’s ability to hang onto the tree for an extended period led researchers to give it the ‘Marathon’ moniker.

While the new variety is not available in nurseries yet, Gmitter predicts growers will be able to place orders for Marathon trees in late 2019.

Certified trees will be provided to licensed Florida citrus nurseries early this year for budwood increase, and it is expected that Florida growers will be able to place tree orders in mid-late 2019, UF/IFAS researchers said.

UF/IFAS researchers made the parental cross that led to the Marathon in 2004. Gmitter outlined that it was part of a series of crosses developed so growers could produce seedless and easy-to-peel mandarins with a range of maturity seasons. The fruit is somewhat tolerant to citrus greening, or Huanglongbing (HLB).

Another previously released UF/IFAS mandarin, Bingo, arose from the same series of crosses, Gmitter said.

Growers have planted well over 150,000 Bingo trees, and they hope to see the first fruit enter the marketplace in the coming 2019 fruit season.

“Bingo is the first absolutely seedless and easy-to-peel mandarin for Florida growers that matures very early in the season and can compete in the fresh market with fruit grown outside of Florida,” Gmitter confirmed.

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