More than 60 space plants landed in space breeding science and Technology Industrial Demonstration Park

Each space Lily can produce more than 20 flowers, 8-10 times as many as ordinary lilies (click the picture to turn the page), "Shenzhou 10" successfully launched and set off a new round of space fever People daydream about the vast space, but also are curious about the growth state of the plant seeds that have traveled in the "Shenzhou" and returned to the ground Recently, the reporter visited these "space visitors" in the aerospace breeding science and technology industry demonstration park of Xi'an Aerospace base on Chang'an East Street They are Shenzhou 7, 8 and 9, carrying back more than 60 kinds of space plants that have passed "aerospace breeding", such as space lilies, colorful peppers, eggplants and gourds Space lily has begun to breed in a large area and come to the northeast corner of the garden There is a strong lily fragrance far away A yard covering an area of about 2000 square meters is full of white and yellow lilies Each lily is 1.2-1.5 meters high, and each lily has 20-22 flowers "This is the space lily Its height is 3-4 times that of the ordinary lily, and its flowers are 8-10 times that of the ordinary lily At present, they have planted more than 10 space breeding lily varieties After several years of experiment and selection, at present, there are three varieties of lily that are more suitable for the climate and soil conditions of Xi'an, and they have started large-scale breeding." In another area, cucumber, eggplant, tomato, pepper and other vegetables, as well as chrysanthemum, Dali, Arnebia and other flowers are also growing well "Space breeding" is not a genetically modified product "Space breeding", also known as "space mutation breeding", refers to carrying plant seeds on a return spacecraft, using space magnetic field, weightlessness, radiation and other environmental factors to mutate seed genes After returning to the ground, through the careful cultivation of breeding experts, we can dig out new varieties with good and high yield, so as to significantly improve crop yield and quality Guo Rui, a researcher, said that "space breeding" is not a genetically modified product The genetically modified product is the introduction of artificially separated and modified genes into the genome of an organism Due to the expression of the imported genes, the properties of an organism change and new varieties are developed "Space breeding" is a new breed bred by space physical mutation instead of external gene injection Due to the complexity of the space environment and the different adaptability of seed individuals to the environment, not every seed entering the space will have gene mutation, the mutation rate is only 10% of random, and the beneficial gene mutation is only about 3% of 1000 After the seeds are carried back to the ground in space, they must be screened, eliminated and stabilized by professional breeders for at least three to five years, from which valuable strains with the prospect of popularization and application must be selected After further tests and identification, the seeds must pass the examination and approval of the national variety examination and approval committee before they can be called "space seeds" for popularization Use "Space vegetables on the table need to wait again", "space breeding" involves the main grain, cotton, oil, vegetables, fruits and other crop varieties in China Through the ground planting experiments conducted by the breeders of many domestic research units, a batch of new crop lines with high yield, high quality, early maturity and multi resistance have been induced and bred, and a batch of gratifying space breeding results have been achieved "The pumpkin planted last year weighs more than 200 kg Two strong young men can't hold it, but it's just an individual In general, space plants produce three to four times as much as ordinary plants " "Space breeding technology is becoming more and more mature now, but it has not been widely promoted It still needs to wait for space vegetables to reach the dining table of thousands of families," Guo said