Ақ түтін ағашы: сипаттамасы, тарихы және қолданылуы

Species of plant

Morus alba, known as white mulberry, common mulberry and silkworm mulberry, is a fast growing, small to medium sized mulberry tree which grows to tall. It is generally a short lived tree with a lifespan comparable to that of humans, although there are some specimens known to be more than 250 years old. The species is native to China and India and is widely cultivated and naturalized elsewhere (including United States, Mexico, Australia, Kyrgyzstan, Argentina, Turkey, Iran, and many others). The white mulberry is widely cultivated to feed the silkworms employed in the commercial production of silk. It is also notable for the rapid release of its pollen, which is launched at greater than half the speed of sound. Its berries are edible when ripe.

On young, vigorous shoots, the leaves may be up to long, and deeply and intricately lobed, with the lobes rounded. On older trees, the leaves are generally long, unlobed, cordate at the base and rounded to acuminate at the tip, and serrated on the margins. Generally, the trees are deciduous in temperate regions, but trees grown in tropical regions may be evergreen. The flowers are single sex catkins; male catkins are long, and female catkins long. Male and female flowers are usually found on separate trees although they may occur on the same tree. The fruit is long. In the wild it is deep purple, but in many cultivated plants it varies from white to pink. It is sweet but bland, unlike the more intense flavor of the red mulberry and black mulberry. The seeds are widely dispersed in the droppings of birds that eat the fruit. The white mulberry is scientifically notable for the rapid plant movement involved in pollen release from its catkins. The stamens act as catapults, releasing stored elastic energy in just 25 μs. The resulting movement is approximately , about half the speed of sound, making it the fastest known movement in the plant kingdom. Morus alba var. alba
Morus alba var. multicaulis

Cultivation of white mulberry to nourish silkworms began more than 4,700 years ago in China and has since been introduced in other countries. The Ancient Greeks and Romans cultivated the mulberry for silkworms. At least as early as 220 AD, Emperor Elagabalus wore a silk robe. It was introduced into other parts of Europe in the twelfth century and into Latin America after the Spanish conquest in the fifteenth century. In 2002, 6,260 km2 of land were devoted to the species in China. The species is now extensively planted and widely naturalized throughout the warm temperate world and in subarctic regions as well, and would survive in elevations as high as They thrive in mildly acidic, well drained, sandy loam and clayey loam soils, though they can withstand poor soils as well. According to a coroner's report, Lori McClintock, wife of US politician Tom McClintock, died in December 2021 from dehydration due to gastroenteritis caused by "adverse effects of white mulberry leaf ingestion"; the leaf is used as a dietary supplement or herbal remedy for weight loss and diabetes.

White mulberry leaves are the preferred feedstock for silkworms, and are also cut for food for livestock (cattle, goats, etc.) in areas where dry seasons restrict the availability of ground vegetation. The leaves are prepared as tea in Korea. The fruit are also eaten, often dried or made into wine. White mulberry, Morus alba 'Pendula', is used as an ornamental plant. It was planted at several grand stations built along the Lackawanna Railroad in New Jersey during the late 1800s and early 1900s. The species is a lawn tree across the desert cities of the southwestern United States, prized for its shade and also for its cylindrical berry clusters composed of sweet, purplish white fruits. The plant's pollen is problematic in some cities where it has been blamed for an increase in hay fever.