Method for producing Guangliangyou No.1 hybrid rice seeds

A production method and hybrid technology, applied in the production field of rice hybrid Guangliangyou No. 1, can solve the problems of uncontrollable weather influence, high risk, etc., and achieve moderate growth period, good color change at ripening stage, and large grain size Effect

Inactive Publication Date: 2011-06-15
BEIJING KINGS NOWER SEED S&T
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Although the cost of three-line rice seeds is higher than the production of two-line rice hybrids, due to the two-line seed production, the risk is high and the uncontrollability affected by the weather

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: The specific production process of hybrid Guangliangyou No. 1 of the present invention

[0016] Guangliangyou 1 was produced by crossing the three-line male sterile line Guang 8S and the restorer line R1.

[0017] The three-line CMS line Guang 8S mentioned in it is a high-yield, high-quality, high-resistance three-line CMS line selected by teacher Yang Zhenyu.

[0018] The restorer line R1 is bred by crossing 9311 as the female parent with Shuhui 527 through multiple generations of segregation and selection.

Embodiment 2

[0019] Embodiment 2: the production technology of hybrid Guangliangyou No. 1 of the present invention

[0020] (1) Safety isolation: Seed production isolation for other rice varieties with a spatial distance > 500 meters or an interval of more than 15 days between heading and flowering.

[0021] (2) Timely sowing: the male parent is inserted 25-30 days earlier than the female parent in the first phase, or the leaf order difference is 6.5-7.5 leaves, or the effective accumulated temperature difference between the parents is about 205°C (May 20-25 for the female parent in central Jiangsu Day sowing, the first phase of the male parent is planted around April 24), the second and third phases are separated from the previous phase by about 7 days, or the two phases of the male parent are separated by 12 days.

[0022] (3) Reasonable dense planting and suitable row ratio: the distance between plants and rows of the female parent is 16.7×10 cm, and 150,000 to 180,000 basic seedlings a...

Embodiment 3

[0026] Embodiment 3: the cultivation application technique of Guangliangyou No. 1 hybrid

[0027] 1. Timely sowing and cultivating strong seedlings. Guangxi Zhongbei as late rice is sown at the end of June, and the seedling age is 20 to 22 days.

[0028] 2. Reasonable dense planting. The planting specification is 23 (or 26) cm × 13 cm, and 2 grain seedlings per stalk or 18,000 to 22,000 stalks per mu.

[0029] 3. Fertilizer and water management: N, P, and K fertilizers are applied together, enough base fertilizer is applied, tillering fertilizer is applied early, and seedlings are fertilized later; shallow water regenerates, thin water tillering, enough seedlings to dry the field, water retention at the ear stage, and alternating dry and wet times in the later stage Mature, avoid water prematurely.

[0030] 4. Timely prevention and control of pests and diseases.

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Abstract

The invention belongs to the field of heterosis utilization, and particularly discloses a method for producing Guangliangyou No.1 hybrid rice seeds. The Guangliangyou No.1 hybrid rice seeds are new three-line early rice compositions produced by hybridizing a cytoplasmic male sterile line Guang 8S and a restorer line R1, wherein the female parent Guang 8S is the high-yield, high-quality and high-resistance cytoplasmic male sterile line bred by an expert Yang Zhenyu; and the male parent restorer line R1 is an inbred line. The hybrid seeds have the characteristics of high yield, stable production, high disease resistance and high biological yield.

Description

technical field [0001] The invention relates to a production method of rice hybrid Guangliangyou No. 1, which is a method for producing a new combination of hybrid rice by using a three-line method. Background technique [0002] China is a big rice country, and its rice breeding technology has always been in a leading position in the world. However, due to the growth of China's population, the problem of feeding the growing population is still the most important problem that my country's agriculture needs to solve. Although the cost of three-line rice seeds is higher than the production of two-line rice hybrids, the two-line seed production is risky and uncontrollable due to weather. In order to reduce the risk of production, seed companies use the three-line method to produce rice hybrids, which is still the most used method by seed companies. With the shortening of the replacement period of current varieties and the need to expand competition with foreign seed companies,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/02A01G1/04A01G22/10
Inventor 李绍明谭春平鲁梦海李辉
Owner BEIJING KINGS NOWER SEED S&T
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