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Breeding method of japonica rice with high dietary fiber content

A high-fiber, japonica rice technology, applied in the field of japonica rice breeding, can solve the problems of unfavorable human health and low dietary fiber content

Inactive Publication Date: 2012-03-21
SHANGHAI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an improved japonica rice breeding method, which can overcome some deficiencies in the prior art that the dietary fiber content in japonica rice is lower than 3.5%, which is not conducive to human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The japonica rice breeding method comprises the following steps: 1) using 0.02% N-methyl-N-nitrosourea imine as a chemical mutagen, selecting the early-maturing and high-quality japonica rice variety "Yipindao" cultivated by the Korean Academy of Food and Food Sciences, and flowering On the same day, use scissors to remove the flowering flowers, keep the flowering and fertilized Yinghua, and then fertilize the young ears for 10 hours, soak them in the chemical mutagen solution for 60 minutes, wash with water for 12 hours, and then continue to cultivate and grow to maturity , mixed harvesting, to obtain the mutant seed A of the current year; 2) the next year, the mutant seed A was sown mixed, harvested after maturity, and compared with the parent parent "Yipindao" indoors for grain characteristics, and the chalkiness rate of more than 50% was screened, and the thousand-grain weight ratio was compared. Mutant individual plant B whose maternal parent is smaller or larger th...

Embodiment 2

[0012] N-methyl-N-nitrosourea imine with a concentration of 0.02% was used as a chemical mutagen, and the young ears of the japonica rice variety "Yipindao" were fertilized for 10 hours, and the chemical mutagen was tested under anaerobic conditions. After soaking completely for 65 minutes and washing with water for 13 hours, they continued to cultivate and grow until they matured, and harvested together to obtain the mutant seed A of that year; in the next year, the mutant seeds A were mixed and harvested after maturity. "Comparing the grain characteristics, screening the mutant individual plant B with a chalkiness rate of more than 50%, a thousand-grain weight that is 2 grams smaller or greater than the control parent parent, and significantly different from the maternal parent; the multi-year generation characteristics obtained after the mutant individual plant B is cultivated Stable strains were tested for protein content, amylose content, gelatinization temperature and vis...

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Abstract

The invention relates to a breeding method of japonica rice with high dietary fiber content. The breeding method is used for increasing the content of resistant starch in endosperm of japonica rice kernels by a modern genetic improvement breeding and detecting technology and increasing the acceptable daily intake of the resistant starch in daily foods. Compared with other rice, the japonica rice with high dietary fiber content, obtained by the breeding method, has the advantage of remarkably increasing the resistant starch content and can be applied to foods of diabetics and the fat, raw materials of low-energy health-care function foods, and the like.

Description

Technical field: [0001] The invention relates to the technical field of japonica rice breeding, in particular to a breeding method of a new japonica rice strain "slender rice" with high dietary fiber content. Background technique: [0002] Dietary fiber is those "polysaccharides and lignin that cannot be digested by the digestive enzymes secreted by the human digestive tract" collectively referred to as dietary fiber, and are widely accepted. Dietary fiber can also be called "dietary fiber" or "dietary fiber". Dietary fiber plays a very important role in the human body. Dietary fiber enters the digestive tract, absorbs water and expands in the stomach, increases the peristalsis of the stomach, and delays the content of the stomach from entering the small intestine, thereby reducing the absorption of nutrients by the small intestine and making people grow longer. Feel full for longer, prevent overeating and reduce calorie intake. At the same time, dietary fiber absorbs fat,...

Claims

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Application Information

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IPC IPC(8): A01H1/06A01H1/02
Inventor 朴钟泽
Owner SHANGHAI ACAD OF AGRI SCI
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