Rock cabbage is a kind of medicinal plant that grows above 3700 meters above sea level. Its extract, bergenin, is a special drug for the treatment of respiratory diseases such as chronic bronchitis, emphysema, pulmonary heart disease, and bronchial asthma. Market demand A huge amount, favored by pharmacologists. However, with the excessive use of excavation, the wild rock cabbage resources began to shrink in the middle and late 1980s. By the middle of the 1990s, resources had dried up. Since 2002, the Institute of Medicinal Plants of Yunnan Academy of Agricultural Sciences and Yongsheng Greenland Source Plant Development Co., Ltd. have jointly implemented the project of Introduction and Domestication of Crude and Endangered Medicinal Materials. Scientists and technicians investigated and collected the provenances of rock-cabbage from different regions, and established 132 acres of provenances for identifying Chinese cabbage in Yongsheng County, Yunnan Province. Their biological characteristics, growth and development patterns, quality, high yield, resistance, etc. Research was carried out and artificial cultivation experiments were gradually started, and quality seed sources were finally screened out. For more than two years, the project has reached the target, completed the collection, introduction, domestication and seedling propagation of the six existing Chinese cabbage varieties, established 12 acres of seedlings, and produced 240,000 seedlings. According to the project data, the current biennial perennial Chinese cabbage yield can reach up to 405 kilograms, and the medicinal effective ingredient bergenine content is as high as 4.6%, which is close to the content of wild rock cabbage.
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