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The Red Pontiac (also known as Dakota Chief) is a red-skinned early main crop potato variety originally bred in the United States, [1] and is sold in the United States, Canada, Australia, Marruecos, the Philippines, Venezuela and Uruguay. It arose as a color mutant of the original Pontiac variety in Florida [2] by a J.W. Weston in 1945. [3]
'Vitelotte' potatoes have a dark blue, almost black, skin and dark violet-blue flesh; they have a characteristic nutty flavour and smell of chestnuts. The colour is retained in cooking, and is due to natural pigments in the anthocyanin group of flavonoids. [4] The plants mature late and, compared to modern varieties, are relatively low-yielding.
Fusarium dry rot of potato is a devastating post-harvest losses (vegetables) disease affecting both seed potatoes and potatoes for human consumption. [3] Dry rot causes the skin of the tuber to wrinkle. The rotted areas of the potato may be brown, grey, or black and the rot creates depressions in the surface of the tuber.
Potato leafroll virus: genus Luteovirus, Potato leafroll virus (PLRV) Potato mop-top virus (spraing of tubers) genus Furovirus, Potato mop-top virus (PMTV) Potato rugose mosaic: genus Potyvirus, Potato virus Y (PVY, strains O, N and C) Potato stem mottle (spraing of tubers) genus Tobravirus, Tobacco rattle virus (TRV) Potato spindle tuber ...
Black rot Ceratocystis fimbriata Chalara sp. [anamorph] Blue mold rot Penicillium spp. Cercospora leaf spot Cercospora spp. Phaeoisariopsis bataticola = Cercospora bataticola, C. batatas, C. ipomoeae. Charcoal rot Macrophomina phaseolina: Chlorotic leaf distortion Fusarium lateritium Gibberella baccata [teleomorph] Circular spot Sclerotium rolfsii
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Morphology of the potato plant; tubers are forming from stolons. Potato plants are herbaceous perennials that grow up to 1 metre (3.3 ft) high. The stems are hairy. The leaves have roughly four pairs of leaflets. The flowers range from white or pink to blue or purple; they are yellow at the centre, and are insect-pollinated. [6]
Purple cauliflower contains anthocyanins. Anthocyanins (from Ancient Greek ἄνθος (ánthos) 'flower' and κυάνεος / κυανοῦς (kuáneos/kuanoûs) 'dark blue'), also called anthocyans, are water-soluble vacuolar pigments that, depending on their pH, may appear red, purple, blue, or black.