Breeding method of high-quality black rice

Abstract

The invention discloses a breeding method of high-quality black rice. The breeding method includes the following steps: black rice varieties and fine conventional rice varieties are collected, the black rice varieties are crossed with the fine conventional rice varieties to harvest F1 generation seeds, the F1 generation seeds are replanted, separation began in a hybrid F2 generation, the long-grain type seeds with less chalkiness and black seed coat, peel and endosperm are selected, the seeds are screened by scent molecular markers after harvesting the seeds, and a single plate with the scentmolecular markers is selected. After 6-8 generations of single-plant breeding, each generation is screened by the scent molecular markers so as to breed the stable black rich with high yield, short growth period, good resistance, long grain type, low amylose content, low chalkiness and fragrance. Processed brown rice can be comprehensively improved in nutritional level. Clinical studies show thatthe processed brown rice can effectively control the increase of the blood sugar content after being ate.

Description

technical field [0001] The invention relates to the field of hybrid rice breeding, in particular to a method for cultivating high-quality black rice. Background technique [0002] Rice is the staple food of more than 50% of the world's population. With the improvement of living standards, people not only can consume general grains such as white rice and white flour, but also continue to increase their demand for other varieties that combine delicious, nutritious, and health-care functions. Due to the aggravation of environmental pollution, the high pressure of life, and the accelerated pace of life, many diseases are caused by improper nutrition. With the improvement of living standards, people pay more and more attention to the rationalization and nutrition of meals. Specialty rice can provide people with rich nutrients and biologically active substances, and it is an ideal and effective way to solve various chronic diseases and nutritional imbalances in humans. Purple bl...

AI Technical Summary

Problems solved by technology

Due to the relatively poor cultivation characteristics of black rice, the plants are tall, the leaves are wide, they are not resistant to fertilizers, they are easy to lodging, the seed setting rate is low, and they mature earlier, they are easy to be eaten by birds, the yield is low, the economy is poor, and the amylose content is high. , the taste is not good, most of them have no fragrance, and the commodity value is not high

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