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A method for breeding japonica rice with high resistant starch and high zinc polymerization

A technology of high resistant starch and resistant starch, applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve the problems that zinc cannot be satisfied, and achieve short breeding cycle, zinc nutrition promotion, prevention and control Effects of Diabetes in Pregnancy

Active Publication Date: 2018-08-28
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

At present, the average zinc content in ordinary rice sold on the market is only 10mg / Kg, and it is impossible to meet the demand for zinc when eating normally

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with examples.

[0029] 1. Breeding materials:

[0030] (1) Zhefu 111 was used as the female parent. Zhefu 111 is a new diabetes-specific indica rice variety developed by Zhejiang University and the Institute of Genetics and Developmental Biology, Chinese Academy of Sciences. This variety has been applied to and authorized by the Plant New Variety Protection Office of the Ministry of Agriculture, application number: 20080431.6, and can be purchased from the Agricultural College of Zhejiang University.

[0031] The rice is a high-resistant starch variety with a resistant starch content of 10.9%, which is suitable for diabetics and is 54.5 times that of the parent II. The zinc content is only 12.1 mg / kg, which is 1 / 2.7 of that of the parent II. , is a variety with low zinc content.

[0032] (2) Take Lilizi as the male parent. Lilizi is a miniature japonica rice variety with high zinc conten...

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Abstract

The invention discloses a japonica rice breeding method with high resistant starch and high zinc polymerization. The method comprises the following steps: hybridizing by taking indica rice varieties with the resistant starch content of 10% or more as parents I and japonica rice varieties with the zinc content of 30 mg / kg or more as parents II, so as to obtain F1-generation seeds; back-crossing the F1-generation seeds and the parents II, so as to obtain BC1F1-generation seeds; back-crossing the BC1F1-generation seeds and the parents II, so as to obtain BC2F1-generation seeds; planting the BC2F1-generation seeds and constructing a doubled haploid population with an anther culture technology; selecting strains with the zinc content of 30 mg / kg or more and the resistant starch content of 8% or more from a DH1-generation; selecting japonica-cline type strains from a DH2-generation; selecting strains with the yield per mu of 400 kg or more from a DH3-generation; selecting japonica-cline type high-yield japonica rice with high resistant starch and high zinc polymerization and with the resistant starch content of 10% or more and the zinc content of 30mg / kg or more from a DH4-generation. A rice variety bred by the method has three excellent features of high resistant starch, high zinc and japonica rice.

Description

technical field [0001] The invention relates to the technical field of rice breeding, in particular to a method for breeding japonica rice with high resistant starch and high zinc polymerization. Background technique [0002] Medical research shows that: In addition to genetic factors, chronic diseases of the blood system such as diabetes are mainly caused by daily living habits such as daily diet, and a high-sugar, high-fat, and high-protein diet is the culprit, especially the "culprit" of high sugar. ". The core of the rice staple food "high sugar" is that the proportion of digestible starch is too high (leading to gluttony, obesity and hyperglycemia), while the proportion of resistant starch is too low (currently, the resistant starch content of general indica rice is only 1%, The content of japonica rice is generally below 0.5%, and the content that meets the health needs of modern people should be above 10%). The simple pursuit of high-quality taste or single japonica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04A01H1/08
CPCA01H1/02A01H1/04A01H1/08
Inventor 张宁吴殿星舒小丽王寅傅吉黄佳佳丁箐雯朱张士昌
Owner ZHEJIANG UNIV
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