Method for breeding and screening astragalus sinicus varieties with high selenium content

Abstract

The invention relates to a method for breeding and screening astragalus sinicus varieties with high selenium content, which comprises the following steps of: screening the selenium QRS values of the conventional high-quality astragalus sinicus varieties in China by using a quantum resonance spectrometer (QRS), hybridizing varieties of which the selenium QRS values reach +3, and further screening the selenium QRS values of first filial generation; planting the first filial generation of which the selenium QRS values reach +4, spraying selenium-rich nutrient solution with different concentrations on leaf surfaces twice in the growth period, and screening the selenium QRS values of seeds after the seeds are mature, wherein varieties of which the selenium QRS values of plants and the seeds are in the range of +5 to +7 are regarded as the astragalus sinicus varieties with high selenium content, and varieties of which the selenium QRS values are less than +5 are regarded as the common selenium-rich astragalus sinicus varieties; and performing corresponding biochemical analytical determination to determine the selenium content of each variety with high selenium content. The method has the advantages that: natural astragalus sinicus varieties with high selenium enrichment capacity are planted to convert exogenous inorganic selenium into organic selenium with high bioavailability, and are taken as selenium carriers to prepare green manure, feed additives and food additives, and selenium-rich agricultural products are produced through secondary conversion, so that the problem that food is lack of selenium is solved.

Description

Technical field: [0001] The invention relates to a milk vetch vetch with high selenium-enrichment and high biotransformation degree selected through systematic sorting of milk vetch varieties, hybridization among varieties, and high-selenium-rich test cross. Variety technology of Yunying No. 6 and Shufufu Se Ziyunying No. 8. Background technique: [0002] In 1973, the World Health Organization (WHO) announced that selenium is an essential trace element in animal life. In 1994, my country allowed the addition of selenium in food as a food nutrition fortifier and promulgated the national standard GB14880-1994. In 2003, the U.S. Food and Drug Administration (FDA ) approves selenium as a tumor suppressor, and allows selenium nutrition products to label the tumor suppressor properties of selenium. In recent years, people have increasingly realized the important role of selenium in maintaining human life activities. Selenium is an important part of glutathione peroxidase, and at t...

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Problems solved by technology

4) Selenium-enriched pork, beef, mutton, milk, poultry meat and eggs produced by pigs, cattle, sheep, and poultry raised through selenium-enriched feed contain animal selenoproteins that are easily absorbed by the human body, and are currently the best supplements in the world. Selenium functional food, but because animals and human body cannot directly absorb inorganic selenium, it is highly toxic to animals and cannot be used

Only by converting feed plants into organic selenoproteins can they be safely absorbed and transformed by livestock and poultry, but most feed plants have a low degree of organic conversion of selenium, only milkvetch, which is both a green manure and a feed, has a strong accumulation of selenium ability and high organic conversion degree, it is an ideal selenium-enriched feed and feed additive for livestock and poultry

[0004] From 2001 to 2003, the Soil and Fertilizer Institute of Anhui Academy of Agricultural Sciences carried out selenium-enriched and high-yield research on some major domestic fine milk vetch varieties. In the early stage of production, an appropriate amount of sodium selenite solution was applied, and the selenium-enriched purple vetch was sprayed with selenium nutrient solution for three consecutive years. The yield of vetch fresh grass rose to an average of 4634.4kg / mu, which was 1.67 times higher than the average of 1737.7kg / mu without exogenous selenium in the three years from 1995 to 1997. It only shows that exogenous selenium can greatly increase the yield of vetch , did not conduct screening research on the selenium-enrichment ability among varieties, and did not conduct variety selection and screening for the purpose of high enrichment

At present, there is no similar technical report at home and abroad

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