![]() ![]() The 'Star Ruby' is the darkest of the red varieties. Its improved attributes of mutant variety are fruit and juice color, deeper red, and wide adaptation. The 'Rio Red' is a mutation-bred variety that was developed by treatment of bud sticks with thermal neutrons. The 'Rio Red' variety is a 2007 Texas grapefruit with registered trademarks Rio Star and Ruby-Sweet, also sometimes promoted as Reddest and Texas Choice. Using radiation to trigger mutations, new varieties were developed to retain the red tones that typically faded to pink. The Texas Legislature designated this grapefruit variety the official "State Fruit of Texas" in 1993. The 'Thompson' was a limb sport from a 'Marsh' grapefruit selected in 1913. It was a limb sport of a 'Thompson' grapefruit selected by A.E. The 1929 'Ruby Red' (or 'Redblush') patent was associated with real commercial success, which came after the discovery of a red grapefruit growing on a pink variety. This parasitism has led to millions in economic costs for nations in Central America and southern North America. ![]() The larvae of these flies then consume the fruit to gain nutrients until they can proceed into the pupae stage. suspensa, which lay their eggs in overripe or spoiled grapefruits. Grapefruits are one of the most common hosts for fruit flies such as A. ![]() 'Ruby Red' (of the 'Redblush' variety) was the first grapefruit patent. Its flesh is segmented and acidic, varying in color depending on the cultivars, which include white, pink, and red pulps of varying sweetness (generally, the redder varieties are the sweetest). The fruit is yellow-orange skinned and generally an oblate spheroid in shape it ranges in diameter from 10 to 15 cm (3.9 to 5.9 in). They produce 5 cm (2 in) white four-petaled flowers. The leaves are long (up to 15 cm (5.9 in)), thin, glossy, and dark green. The evergreen grapefruit trees usually grow to around 5–6 m (16–20 ft) tall, although they may reach 13–15 m (43–49 ft). Grapefruit growing in the grape-like clusters from which their name may derive ![]()
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