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A little wonder, every day

Citrus hybrids

AI-generated cover with pomelo, orange, and grapefruit. Origin: OpenAI image generation; generated 2026-10-28. Prompt: Photorealistic editorial food photograph for a science article cover: whole pomelo, orange and grapefruit arranged on a light neutral table with a few green citrus leaves, one grapefruit cut open to show ruby-pink flesh, soft natural daylight, realistic varied citrus textures, no text, labels, logos, watermark, or collage. Illustration only; it does not depict a specific cultivar or prove ancestry.
AI-generated pomelo in an orchard. Origin: OpenAI image generation; generated 2026-10-28. Prompt: Photorealistic botanical editorial photograph of ripe pomelo fruit hanging on a citrus tree, very large pale green-yellow rind with glossy leaves, one fruit cut open on a nearby rustic wooden surface showing pale segmented flesh, believable orchard, morning light, no text or labels or watermark or collage. Generic illustration.
AI-generated cut grapefruit close-up. Origin: OpenAI image generation; generated 2026-10-28. Prompt: Photorealistic editorial macro photograph of sliced grapefruit on a simple plate, ruby grapefruit and pale pink flesh clearly visible with peel texture, neutral background, soft daylight, science article food image, no text, no labels, no watermark, no collage. Generic illustration.

AI-generated cover with pomelo, orange, and grapefruit. Origin: OpenAI image generation; generated 2026-10-28. Prompt: Photorealistic editorial food photograph for a science article cover: whole pomelo, orange and grapefruit arranged on a light neutral table with a few green citrus leaves, one grapefruit cut open to show ruby-pink flesh, soft natural daylight, realistic varied citrus textures, no text, labels, logos, watermark, or collage. Illustration only; it does not depict a specific cultivar or prove ancestry.

Listen to fact0:00 / —

Many familiar citrus fruits have complex hybrid origins. Genetic analysis shows that grapefruit arose from a cross between pomelo and sweet orange, while the histories of different grapefruit cultivars may involve independent crosses. Citrus is therefore a striking example of hybridization in cultivated fruit crops, but this does not mean that most new hybrids across all plants are made from citrus. [1, 2]