Brassica rapa
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Read about Brassica rapa in the Standard Cyclopedia of Horticulture
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Brassica rapa, Linn. Common Turnip. Lvs. prominently lyrate or interrupted below, the root tuberous.—Whatever the origin of the rutabaga and turnip may be, the two plants show good botanical characters. The tubers of the two are different in season, texture and flavor. In the rutabaga, the small Ivs. immediately following the seed-lvs. are sparsely hairy, but all subsequent Ivs. are entirely smooth, densely glaucous blue, thick and cabbage-???, with a fleshy petiole and midrib. In the turnip, the radical Ivs. are always more or less hairy, and they are green and radish-like, thin, with slender petiole, and the Ivs. are much more lyrate, with interrupted Ifts. on the petiole; the small Ivs. following the seed-lvs. are also thinner and narrower and more deeply scalloped. In the rutabaga, the fls. are large and creamy-yellow, whereas in the turnip they are small, yellow and mustard-like, with shorter claws and more spreading calyx. The turnips vary in hairiness, but the cone of expanding lvs., or the "heart- Ivs.," always shows the hairs distinctly, while the heart-lvs. of the rutabagas are normally entirely glabrous, fleshy, and remind one of the young shoots of sea-kale. The turnip usually produces seed freely if the bottoms are left in the ground over winter; and thereby the plant spreads, becoming a true annual and a bad weed, with a slender hard root. Oil-producing forms are var. oleifera, DC.
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- Aburana (nippo-oleifera group)
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Brassica rapa is a plant widely cultivated as a leaf vegetable, a root vegetable, and an oilseed.
Cultivar groups
Cultivated varieties of Brassica rapa include:
- Bok choy (chinensis group)
- Mizuna (nipposinica group)
- Flowering cabbage (parachinensis group)
- Chinese cabbage (pekinensis group)
- Turnip (rapa group)
- Rapini (ruvo group)
- Tatsoi
Experimental organism
Some varieties of this plant are used for experiments as they require little more attention than the proper amounts of light, water, and fertilizer. These "fast plants" are ideal for basic botany and biology experiments, as they grow quickly, maturing in about 40 days. Some genetically modified versions mature in just 28 days. This short growing time makes them easier to experiment with than most other plants. Some of these plants have even been sent to outer space to test germination. Its a water plant that lives in the jungle.