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Breeding method for improving appearance quality of soft rice

A technology of appearance and quality, applied in the field of crop genetics and breeding, can solve the problems of poor transparency, reduced commercial value of rice, intolerant of rice storage, etc., and achieve the effect of improving breeding efficiency

Pending Publication Date: 2022-07-05
JIANGSU COASTAL AREA AGRI SCI RES INST
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AI Technical Summary

Problems solved by technology

Most of the low-amylose (about 9%) soft rice japonica rice varieties in current production are cloudy in appearance and poor in transparency, which reduces the commodity value of the rice. It is difficult to compete with Northeast and Japanese rice (transparent, good-looking) in appearance.
Although the transparency of the rice can be improved by increasing the water content of the rice to above 17%, it often causes problems such as the rice is not resistant to storage, and even mildew

Method used

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  • Breeding method for improving appearance quality of soft rice
  • Breeding method for improving appearance quality of soft rice
  • Breeding method for improving appearance quality of soft rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] Example: Breeding of Transparent Soft Rice Lines with Appearance Quality Using "Binhai 818" Low Chalk White Mutant

[0025] Proceed as follows:

[0026] (1) In the summer of 2018, in Yancheng, Jiangsu Province, with Nanjing 9108 as the female parent and the low chalky white mutant of "Binhai 818" as the male parent, artificial cross was carried out, and the hybrid was harvested to obtain the F1 generation seeds;

[0027] (2) The F1 generation was planted in Sanya, Hainan in the winter of 2018. Nanjing 9108 was used as the male parent for backcrossing, and BC1F1 seeds were harvested after maturity. The BC1F1 population was determined by molecular marker-assisted selection and appearance scanning assay.

[0028] (3) In the summer of 2019, the BC1F1 population was planted in Yancheng, Jiangsu Province, and Nanjing 9108 was used as the male parent for backcrossing. After maturity, the BC2F1 seeds were harvested, and the BC2F1 population was determined by molecular marker-as...

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Abstract

The invention discloses a breeding method for improving the appearance quality of soft rice, and belongs to the field of crop genetic breeding. A mutant which is extremely low in chalkiness grain rate and chalkiness degree and highly transparent in rice appearance performance is adopted as a parent and is subjected to hybridization, multiple backcross and selfing with soft rice which is poor in appearance quality, a molecular marker and appearance scanner screening are added, an excellent strain which is transparent in appearance quality is bred, and finally a new soft rice strain which is transparent in appearance quality is bred. The method aims at a single target character, so that the breeding efficiency is improved, the method can be used for improving the appearance quality of rice varieties, and a foundation is laid for rice molecular marker assistance and high-quality breeding.

Description

technical field [0001] The invention belongs to the field of crop genetics and breeding, in particular to a breeding method for improving the appearance quality of soft rice. Background technique [0002] Rice (Oryza sativa L.) is one of the most important food crops in the world and plays a pivotal role in ensuring food security. In the past 30 years, through the implementation of high-yield breeding, super-high-yield breeding, super rice breeding, and green super rice breeding, rice production in China has been continuously improved, but the problem of rice quality has become more and more prominent. Although soft japonica rice varieties are welcomed and sought after by the market in terms of taste, the appearance and quality of good-eating japonica rice varieties are mediocre. Most of the low-amylose (about 9%) soft rice japonica rice varieties currently produced have a cloudy appearance and poor transparency, which reduces the commercial value of rice, and it is difficu...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04A01H1/06
CPCA01H1/02A01H1/045A01H1/06
Inventor 张梦龙孙明法刘凯朱国永严国红王爱民唐红生施伟张桂云赵绍路孙一标宛柏杰朱静雯代金英胡蕾程新杰岳红亮
Owner JIANGSU COASTAL AREA AGRI SCI RES INST
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