Lincang Gentiana seed carries "Shenshi" space herbal medicine from Yunnan Province to emerge in August (multiple pictures)

Recently, the launching ceremony of space breeding project of gentian grass price of "Shenshi" in Lincang City Yang Liwei handed over to the mayor of Lincang the price seed of Gentiana that had been planted in "Shenshi" Zhang Yue took photos of the price seed of Gentiana that had been planted in "Shenshi" With the smooth return of "Shenshi", space breeding has become a hot topic At present, the price seed of Gentiana yunnanensis, which returned to Yunnan with Shenshi in June this year, has entered the experimental stage of space breeding It has been seeded in the breeding bases of Kunming and Lincang respectively It is expected that new seedlings will grow around the middle of August What is space breeding all about? How does it work? Our reporter will show you the truth It is the first step of space breeding to screen seeds for four or five years The seeds with space must be the seeds with stable heredity and good comprehensive characters, so as to ensure the significance of space breeding " Zhang, deputy director of the Institute of medicinal plants, Yunnan Academy of Agricultural Sciences, said that the price seeds of Gentiana yunnanensis carrying "Shenshi" were selected after several rounds of screening, and the seeds with full particles, no pests and diseases, and good characters were "promoted to heaven" Zhang said that the selected seeds will be taken into space by space vehicles such as satellites and spaceships, and their unique space environment conditions, such as cosmic rays, microgravity, high vacuum, weak geomagnetic field and other factors, will produce various gene variations on the mutation of plants, and then return to the ground to select new germplasm, materials and varieties of plants In addition, because the changes of these seeds are molecular level, it is necessary to plant the seeds first Generally, the mutation individual plants are screened from the second generation, and then the selected seeds are seeded and screened again, so that they can self propagate After three or four generations of such breeding, it is possible to obtain excellent mutant lines with stable genetic characteristics During this period, it is necessary to conduct strain identification, regional test and determination of the content of yield and medicinal components In this way, every seed that has traveled in space must be screened and identified for 4-5 years in a row Only after the superior strains are tested and approved by the crop variety approval committee can they be called the real "space seed" "In this breeding project of Gentiana scabra price, the Gentiana scabra will be continuously and directionally screened for more than 4 generations to select the Gentiana scabra varieties with high yield, high quality and high resistance, which are suitable for mechanized production and planting in different altitude areas." Price of gentian grass carrying "Shenshi" is expected to rise in August According to the relevant person in charge of Lincang City, at present, the price seeds of Gentiana that carry "Shenshi" back to Yunnan (the price of Gentiana purpurea is 5g, the price of Gentiana purpurea is 4G) have been seeded in Kunming, Yongde County of Lincang and Boshang town of Lincang Linxiang district respectively, and new seedlings are expected to grow around the middle of August After the seedlings are transplanted, the improved varieties are selected According to Zhang, the seeds carried back are the "first generation seeds" In the first phase of the experiment, the experimental group needs to test the vigor of the "ascending" seeds and plant them at the same time as the seeds growing at the same time on the ground for comparative observation Then, the seedlings were cultivated in the planting bases of Gentiana yunnanensis in Kunming and Lincang About one year later, the seedlings were transplanted and the improved varieties were selected "This time, the breeding direction of" space Gentiana "is mainly to improve the content of medicinal ingredients on the premise of maintaining the yield." In order to implement the space breeding project of Gentianaceae price, Lincang City has selected 10000 mu of "Shenshi" Gentianaceae price space breeding base in Dashan Township and Chonggang township of Yongde County Experts carry out continuous directional screening for more than four generations of Gentianaceae price seeds carrying "Shenshi" to select high-yield, high-quality and high resistance varieties with relatively stable characters, and carry out in-depth research and in-depth development The whole project is expected to be completed by the end of 2020 Through 5 to 8 years' efforts, the project plans to select more than 5 varieties with high yield, high quality and high resistance, suitable for mechanized production and planting in different altitude areas Space breeding is expected to promote the development of Yunnan biopharmaceutical industry Because most of the "space seeds" carrying space breeding have the characteristics of high yield, high quality, early maturity, strong disease resistance and so on, space breeding will undoubtedly become a new path for the breeding of fine varieties of traditional Chinese medicine and artificial large-scale planting At present, there are 60 new varieties of aerospace breeding in China, and more than 100 strains have been popularized and applied in agricultural production Aerospace breeding technology has become one of the important ways to rapidly cultivate excellent varieties of crops However, the space flight of Chinese herbal seeds is still in its infancy Yunnan is the province with the most abundant medicinal materials resources in China The prices of Panax notoginseng, Gastrodia elata, Paris polyphylla, Pinellia ternata and other traditional Chinese medicine seeds have traveled in space However, due to the short life of the medicinal seeds sent to space, they often lose their vitality after returning to the ground In addition, the number of seeds carried on board is small, resulting in low survival rate of the seeds Most of the seeds of Chinese medicinal materials return to the earth without any information and fail to achieve artificial breeding "The price life span of the selected Gentiana is one year After more than ten days of space travel, the seed vigor will not be lost." In addition, although the seeds of Gentiana yunnanensis carrying "Shenshi" are only 9g, they can reach 50000 seeds per gram due to their small size, which is very beneficial to the emergence rate of early seedlings, Zhang said The excellent varieties selected by this technology can solve the problem of serious shortage or even endangered of some medicinal materials, and it is expected to promote the healthy development of Chinese medicinal materials industry from the source "In the future, space breeding is expected to be promoted in a number of major medicinal materials such as Dendrobium, Panax notoginseng and breviscapus prices, so as to promote the development of Yunnan biopharmaceutical industry."