Breeding method of aromatic rice

A fragrance type and rice technology, which is applied in the field of crop genetic selection and breeding, can solve the problems of large fragrance separation of hybrid rice generations, the restriction of fragrance inheritance by the ecological environment, and the inability to meet the needs of high-quality rice, so as to achieve small fragrance separation, excellent quality, Fragrance good effect

Pending Publication Date: 2018-11-23
贵州省水稻研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Therefore, there are still problems such as strong regional limitations in fragrant rice, which can no longer meet the needs of modern people for high-quality rice, and problems such as the large separation of fragrance between generations of hybrid rice, and the restriction of fragrance inheritance by the ecological environment also need to be solved urgently.

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  • Breeding method of aromatic rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A method for breeding fragrant rice, comprising the steps of:

[0059] For S1, the Jinling jade indica mutant γ-194 with slender grains was selected as the female parent and the large-grain fragrant rice whose rice quality reached the third grade of the national standard was used as the male parent to obtain the F1 generation line;

[0060] S2 planted 20 strains of the F1 generation, and selected a seed setting rate of more than 80%, and a total of 11 strains were mixed and harvested as the F2 generation;

[0061] S3 planted 5,000 individual plants of the F2 generation. After grouting, select individual plants with a plant height of 95-100 cm and a grain length > 7 mm for aroma detection by the KOH method. A total of 300 individual plants with aroma were detected, and the individual plants with aroma were detected. Conduct appearance quality inspection, select lines with chalkiness rate ≤ 30% and transparent grain, a total of 104 plants per plant, and eliminate 4 lines ...

Embodiment 2

[0113] A method for breeding fragrant rice, comprising the steps of:

[0114] For S1, Jinyou 402 (from the School of Plant Science and Technology of Huazhong Agricultural University) was used as the female parent and the large-grain aromatic rice whose rice quality reached the third grade of the national standard was used as the male parent to obtain the F1 generation line;

[0115] S2 planted 20 strains of the F1 generation, and selected a seed setting rate of more than 80%, and a total of 11 strains were mixed and harvested as the F2 generation;

[0116] S3 planted 5,000 individual plants of the F2 generation. After grouting, select individual plants with a plant height of 95-100 cm and a grain length > 7 mm for aroma detection by the KOH method. A total of 300 individual plants with aroma were detected, and the individual plants with aroma were detected. Conduct appearance quality inspection, select lines with chalkiness rate ≤ 30% and transparent grain, a total of 104 plan...

Embodiment 3

[0140] The stereotyped rice obtained in Example 1 is planted with yellow loam, red loam, mountain meadow soil, red lime soil, black lime soil, red clay, swamp soil, and paddy soil respectively, with the same planting area and the same planting quantity. , after one year of planting, the KOH method was used for aroma detection and rice quality detection, and the results are shown in Table 5 and Table 6 respectively:

[0141] Table 5 Fragrance test results

[0142]

[0143]

[0144] Table 6 Rice quality testing results

[0145]

[0146] It can be seen from Table 5 that the stereotyped rice was planted in yellow loam, red loam, mountain meadow soil, red lime soil, black lime soil, red clay, swamp soil, and paddy soil, and the fragrance separation was small; from Table 6, it can be seen that: The conditioned rice was planted in different soil types, and its eating quality was greater than 80 points; it can be seen that the soil conditions have low interference to the con...

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Abstract

The invention relates to the technical field of crop genetic breeding and in particular relates to a breeding method of aromatic rice. The breeding method comprises the following steps: 1) hybridizing: taking indica type rice with fine and long grains as a female parent and taking aromatic japonica rice as a male parent, and hybridizing to obtain an F1-generation strain; 2) carrying out selfing: from an F1 generation, carrying out the selfing on each generation of the strain to obtain an F8-generation strain; keeping each generation of the strain according to different screening requirements;3) keeping stereotyped rice: planting the F8-generation strain and selecting strains with the yield higher than 400Kg/Mu, the thousand seed weight of greater than 30g, transparency and the grain sizegreater than 7mm as the stereotyped rice. According to the breeding method, a new variety obtained by multi-generation pedigree breeding has the characteristics of good rice quality, good aroma, goodstrain leaf shape and good mouthfeel.

Description

technical field [0001] The invention relates to the technical field of crop genetic selection and breeding, in particular to a method for breeding aromatic rice. Background technique [0002] Rice is one of the most important food crops in the world, providing about 25% of the energy for more than 3 billion people in the world. For residents in Southeast Asia, rice provides more than 35% of their energy. Rice is the staple food for about 65% of the people in China. With the continuous improvement of rice yields and the continuous improvement of people's living standards, people have put forward higher requirements for the eating quality of rice. As one of the types of cultivated rice, fragrant rice not only has a rich aroma and fragrant rice, but also has high nutritional value. According to the "Compendium of Materia Medica", fragrant rice can "moisten the heart and lungs, and a hundred medicines, and take a long time to lighten the body and prolong life". Known as "trea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 朱速松王忠妮周建华李佳丽张大双张习春宫彦龙彭强姜雪闫志强龙武华吴健强邓茹月雷月刘雪薇徐海峰
Owner 贵州省水稻研究所
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