Most of the plants are essential due to their medicinal properties and have contributed to the origin and evolution of many traditional herbal therapies. Rheum is also one of the famous and known medicinal plants of Kashmir Himalaya. It ranges from an altitude of 1700-5500 m. Its Roots are long and stout. The stem is erect, hollow, sulcate, glabrous, or strigose. It is native to Asia-Temperate to Asia-Tropical, from China to India, Nepal, and Pakistan. In India, its found in Himachal Pradesh, Jammu and Kashmir, and Uttar Pradesh. Rhubarb is the English name of the genus Rheum (family Polygonaceae). Emodi, Webbianum and Spiciforme are three species of Rheum found in Kashmir Himalaya. Rheum species are wellknown medicinal plant and is found on high altitudes. Its leaves and stalks are taken as food and cooked as vegetables. It's used as medicine and is generally proven more effective against certain ailments like antibacterial, anticancerous, anti-inflammatory, rheumatoid diseases, stomachache, and intestinal problems. It is also used for the treatment of indigestion, abdominal disorders, boils, wounds and flatulence. But Rheum has become endangered due to exploitation. Active compounds like aloe-emodin, rhein, emodin, chrysaphanol and physicion are found in this plant which is anti Cancerian agents. High molecular diversity is also observed in all the three species of Rheum.
Rheum webbianum is one of the famous and popular medicinal plant found in Ladakh region. Rheum webbianum Royle is an important medicinal plant belonging to the family Polygonaceae. It is commonly known as 'Himalayan Rhubarb' in English, 'Revandchini' in Hindi, 'Xu mi da huang' in Chinese, and 'Lachhu' or 'Chu-rtsa' in Ladakh. It is native to Asia-Temperate to Asia-Tropical, from China to India, Nepal and Pakistan. In India, it is found in Himachal Pradesh, Jammu and Kashmir, Uttar Pradesh. In Jammu and Kashmir, it is grown on open slopes and shrubberies. Due to overexploitation the Rheum webbianum has become endangered. so, it was conserved by the tissue culture and showed best results on different phyrohormones. The plant formation was observed on combination of BAP, TDZ, 2,4-D and IBA.
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