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Plants are often infected with "alexanders rust", Puccinia smyrnii Biv.-Bernh., which produces orange/yellow galls on both sides of the leaves and thickening of the stems, followed by dark brown telia on the undersides of the leaves only. [25] There are at least nine species of insect which are found on alexanders in Britain and western Europe.
Lotus root The edible portion is a stem modified for underwater growth. Buds and branches are visible on the vegetable sold as lotus root. Potato The edible portion is a rhizome (an underground stem) that is also a tuber. The "eyes" of the potato are lateral buds. Potatoes come in white, yellow, orange, or purple-colored varieties. Sugar cane
Root vegetables are underground plant parts eaten by humans or animals as food. In agricultural and culinary terminology, the term applies to true roots such as taproots and tuberous roots as well as non-roots such as bulbs , corms , rhizomes , and stem tubers .
Other functions attributed to calcium are: the neutralization of organic acids; inhibition of some potassium-activated ions; and a role in nitrogen absorption. A notable feature of calcium-deficient plants is a defective root system. [14] Roots are usually affected before above-ground parts. [15] Blossom end rot is also a result of inadequate ...
Root hairs form an important surface as they are needed to absorb most of the water and nutrients needed for the plant. They are also directly involved in the formation of root nodules in legume plants. The root hairs curl around the bacteria, which allows for the formation of an infection thread into the dividing cortical cells to form the ...
This is a list of vegetables which are grown or harvested primarily for the consumption of their leafy parts, either raw or cooked. Many vegetables with leaves that are consumed in small quantities as a spice such as oregano , for medicinal purposes such as lime , or used in infusions such as tea , are not included in this list.
Root chicory contains volatile oils similar to those found in plants in the related genus Tanacetum, which includes tansy, and is likewise effective in eliminating intestinal worms. All parts of the plant contain these volatile oils, with most of the toxic components concentrated in the plant's root.
Leaves generally intercept light and fix carbon, roots take up water and nutrients, and stems and petioles display the leaves in a favourable position and transport various compounds within the plant. Depending on environmental conditions, plants may change their investment scheme, to make plants with relatively bigger root systems, or more leaves.