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Selective breeding method for high-nutrition rice varieties
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A high-nutrition rice technology, applied in the breeding field of high-nutrition rice varieties, can solve rare and other problems, and achieve the effects of improving health, regulating human body functions, and good taste
Active Publication Date: 2013-08-07
DINGLUO FENGZHI CHANGSHUN TECH CO LTD
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[0003] However, the varieties reported so far are all rich in 1-2 kinds of functional ingredients, and rice varieties rich in multiple functional ingredients are relatively rare, especially rich in iron (trace elements needed by the human body), sugar (to improve taste), lai There are no reports of high-nutrition rice varieties with 4 kinds of nutrients such as amino acid (essential amino acid for human body) and cellulose (to improve gastrointestinal function)
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Embodiment 1
[0022] 1) Huang Ruanzhan was selected as the recurrent parent (R), and the iron-rich rice variety IR164 (N1) (Hu Peisong. Research and Development of Functional Rice. Chinese Rice, 2003,5:3-5), the high-sugar rice variety Baitian No. 1 (N2) (Nan Zhonghao, Quan Dongxing, Zhou Jian, et al. Characteristics and development and utilization of special rice in Jilin. Journal of Agricultural Sciences of Yanbian University, 2000,22(1):60-62), high lysine rice Variety Milyang164 (N3) (Li Shengyuan, Jin Shengnan, Park Zhongze, et al. Current status and prospect of research and utilization of special rice in Korea. Shanghai Agricultural Journal 2002, 18 (Supplement): 47-52), high-cellulose rice variety Shuiyuan 464 (N4) (Li Shengyuan, Jin Shengnan, Park Zhongze, etc. Research and Utilization Status and Prospects of Special Rice in Korea. Shanghai Agricultural Journal 2002, 18 (Supplement): 47-52) are non-recurrent parents, used as hybrids R / N1, R / N2, R / N3, R / N4, get hybrid F 1 Substitut...
Embodiment 2
[0034] 1) Lindao 10 was selected as the recurrent parent (R), with iron-rich rice variety IR164 (N1), high-sugar rice variety Baitian No. 1 (N2), high-lysine rice variety Milyang164 (N3), high-cellulose rice variety The rice variety Shuiyuan 464 (N4) is a non-recurrent parent, which was used as a hybrid for R / N1, R / N2, R / N3, and R / N4 to obtain a hybrid F 1 Substituted by F 1 -N1, F 1 -N2, F 1 -N3, F 1 -N4 means;
[0035] 2) Plant F 1 -N1, F 1 -N2, F 1 -N3, F 1 -N4 seeds, hybrid F at flowering stage 1 -N1 / F 1 -N2 and F 1 -N3 / F 1 -N4, have to re-exchange F 1 Substituted by F 1 -N12, F 1 -N34 means;
[0036] 3) Plant F 1 -N12, F 1 -N34, backcross R / F at flowering stage 1 -N12 and R / F 1 -N34, get 1 generation of backcross, respectively with BC 1 f 1 -N12, BC 1 f 1 -N34 means;
[0037] 4) Plant BC 1 f 1 -N12, BC 1 f 1 -N34, self-crossed to F 2 Generation BC 1 f 2 -N12, BC 1 f 2 -N34;
[0038] 5) Plant F 2 Generation BC 1 f 2 -N12, BC 1 f 2 -N3...
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Abstract
The invention discloses a selective breeding method for high-nutrition rice varieties, which belongs to the technical field of special rice seed breeding. The selective breeding method disclosed by the invention comprises the following steps of: selecting high-yield, high-quality and disease-resistant rice varieties as recurrent parents; hybridizing the recurrent parents with iron-rich rice variety IR164, high-sugar rice variety Bai Tian No.1, high-lysine rice variety Milyang 164 and high-cellulose rice variety water source 464 respectively; performing backcross and convergent cross for times; and breeding the high-nutrition rice varieties having economical characters and yield characters which are similar to the economical characters and yield characters of the recurrent parents, and rich in the nutritional ingredients of iron, sugar, lysine, cellulose and the like by selecting the economical characters, yield characters, iron content, sugar content, lysine content, cellulose content and the like of separating generations.
Description
technical field [0001] The invention specifically relates to a method for breeding high-nutrition rice varieties, and belongs to the technical field of special rice breeding. Background technique [0002] In recent years, the nutritional and health functions of rice have attracted more and more attention from consumers. Some special rices are favored by consumers because of their unique health effects on the human body. For example, the International Rice Institute has bred the iron-rich high-yielding rice variety IR164 with an iron content of more than 25 mg / kg, Swiss breeders have bred the "Golden Rice" variety (Golden Rice) rich in vitamin A, and Korean breeders have bred sweet rice hwachengbyeo su- 1, hwachengbyeo su-2 (total sugar content up to 5%-9%), powdery rice hwachengbyeofro, soft rice, high lysine rice variety Milyang164, high cellulose variety "Shuiyuan 464" (the dietary fiber content of brown rice and polished rice 2 times and 3 times higher than the control r...
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