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Red Lina, (RosaLina)
 
 
 
 
 

Origin

The red Lina, PBR ZA20176317, originates from a spontaneous branch mutation discovered by the owner, Mr. Glenam Knott in a Lina Navel Orchard in 2009 in the Kat River, Eastern Cape midlands

Status

Commercial Release

Description

A new and distinct navel orange, originating from a spontaneous branch mutation of a Lina Navel tree. Distinct from the parent Lina Navel by production of red fleshed fruit, (lycopene). Red Lina is an early season Navel orange with dark orange to red pigmented rind and a pink albedo. It further distinguishes itself by ripening 3-4 weeks before Cara-Cara navel, (the current bench-mark red navel). Both flesh and juice are consistently darker than that of Cara-Cara navel. Fruit of Red Lina have a smaller navel end, with rounder fruit than the parent Lina Navel.

Characteristics

Red Lina navel fruit are visibly darker red/orange than normal navels, while some even have pink blushed rind, not unlike Star Ruby Grape fruit. Red rind pigmentation is quite common on fruit that hang inside the trees shaded from the sun. The albedo is clearly pink whereas in Caracara it is white as in normal Navels. Red lina is a heavy bearer with bunches of fruit in the lower half of the tree being quite common. The oldest commercial planting of 3 year old trees in the Sundays River have good size even with a heavy crop, but thinning may become a requirement to maintain size in the future. Fruit are slightly rounder and have a smaller navel than the parent Lina. In early observations the Red Lina appears to be more compact a tree than its parent.

Rootstock
Options

As with all navels, trifoliate rootstocks are advised for good internals. Rootstocks such as Carrizo would be the best choice due to early ripening. Swingle may slow down ripening which is not advisable for an early variety. Rough lemon is not advised due to poorer internal quality and pigmentation and can only be used in virgin soil.
 
 
 
 
 
Evaluation Data
Evaluation Images Internal Quality
DateRegionSelectionCountJuice %BrixAcidRatioColour
24/5/19Kat River5 yr Red Lina645011.2.9112.3T1
21/6/19Kat River15 yr Caracara645310.1.9111.31T1

Count Distribution
Count364056647288105
%111826221251
Production
At time of writing the first 3 year old commercial orchard was harvested. Production is above average for navels this age. Production is consistently more than the Lina and Cara-Cara control trees in the oldest trial site. Due to the smaller navel end, fruit splitting has been markedly less than the parent Lina Navel and Caracara which has increased pack out % due to significantly less fruit lost to waste by picking time.
General
This early red variety stands to give the Navel Orange line a much needed new lease of life. The cultivar is not only earlier than Caracara but has other improved characteristics over Caracara due to its darker red orange skin. Fruit is firm with less creasing and a lower incidence of large navel ends and fruit splitting than Cara-Cara. The fruit is clearly discernible on the shelf, as something redder than a normal orange. This and its earlier maturity complement the Valentine late red Navel cultivar, (another cultivar with dark red/orange rind in our range).