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Rapid generation-adding method for rice breeding

A rice, fast technology, applied in rice cultivation, botanical equipment and methods, plant genetic improvement, etc., to save breeding costs, speed up breeding progress, and save manpower and material resources.

Inactive Publication Date: 2015-11-11
FOOD CROPS RES INST YUNNAN ACADEMY OF AGRI SCI
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  • Description
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Problems solved by technology

At present, there is no report of three additional generations of rice breeding in the same place a year

Method used

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  • Rapid generation-adding method for rice breeding
  • Rapid generation-adding method for rice breeding
  • Rapid generation-adding method for rice breeding

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Embodiment 1

[0015] This example uses rice parent materials: Hexi 41 (P1), Yunjing 12 (P2), Yunjing 15 (P3), Yunjing 25 (P4), Yujing 13 (P5), Yunjing No. 37 (P6), Yunjing No. 38 (P7), and Yunjing No. 39 (P8) were conventionally crossed, and then self-crossed to obtain the F2 generation (lower generation) breeding materials in Table 1, respectively, according to the following methods for one year Through three times of additional breeding, F3, F4 and F5 breeding materials are obtained, which promotes the additional breeding of rice breeding materials.

[0016] All rice parent materials exemplified in this embodiment are commercially available products, and can be purchased from Kunming Fengjin Agricultural Technology Development Co., Ltd., the company's address: Yunnan Academy of Agricultural Sciences, No. 2238, Beijing Road, Panlong District, Kunming City, Yunnan Province Inside, zip code 650205.

[0017] This embodiment is only an example. In the additional generation breeding three time...

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Abstract

The invention discloses a rapid generation-adding method for rice breeding, pertaining to the technical field of rice breeding. The rapid generation-adding method is used in an area, located at 101 degrees, 58 minutes east longitude and 23 degrees, 36 minutes northern latitude, with an elevation of 430 meters and annual average temperature of 23.8 DEG C. From February in the first year to February in the next year, a direct-seeding manner is adopted and rice low-generation breeding material is utilized for generation-adding breeding three times a year. The amount of rice breeding at the first time, second time and third time is all 20g / m<2>. As for three-time generation-adding breeding, alternation of wetting and drying operation is performed for water and starch management without applying nitrogenous fertilizers in the overall growing season. The rapid generation-adding method for rice breeding has following beneficial effects: generations can be added three times a year; generation-adding breeding at each time helps to ensure all individual plants normally bear fruits, thereby ensuring that originality of material and saving breeding cost. Service lifetime of breeding is greatly shortened and breeding progress is accelerated.

Description

technical field [0001] The invention belongs to the technical field of rice breeding. Background technique [0002] In the process of breeding new rice varieties, hybrid offspring need to undergo 8-10 additional generations to obtain a stable strain. If it is only planted once a year, it will take 8-10 years to obtain a stable strain for regional trials. After 2 years Only regional trials and one-year production trials can be recommended for variety approval. Therefore, it takes at least 11 years to breed a new variety. [0003] Rice originates from tropical and subtropical regions. It is a short-day temperature-loving crop and is particularly sensitive to light and temperature. Since Hainan Island is located in the tropics, the climate conditions in winter are also suitable for rice growth. In order to improve the progress of variety breeding and shorten the breeding period, breeders across the country adopt the method of planting twice a year, that is, planting locally i...

Claims

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Application Information

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IPC IPC(8): A01G16/00A01H1/02A01G22/22
CPCA01G22/22A01H1/02
Inventor 赵国珍戴陆园陈于敏袁平荣世荣苏振喜朱振华寇姝燕邹茜刘慰华黄望启
Owner FOOD CROPS RES INST YUNNAN ACADEMY OF AGRI SCI
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