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Seed production method of hybrid corn seeds 'Xiannong 202'

A technology of hybrids and corns, applied in botany equipment and methods, applications, plant genetic improvement, etc., can solve problems such as difficult, narrow corn germplasm resources, hindering the development and progress of corn breeding and production, and achieve high yields Effect

Inactive Publication Date: 2014-08-06
BEIJING KINGS NOWER SEED S&T
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AI Technical Summary

Problems solved by technology

[0002] The narrow germplasm resources of maize have seriously hindered the development and progress of maize breeding and production in my country. Most of the hybrids selected in my country in the past 20 years have their parental inbred lines derived from Lancaster, Reid Yellow Maya The four systems of Luda Honggu and Tang Sipingtou not only have the problem of genetic vulnerability, but also the inbred lines and hybrid combinations selected have no characteristics in terms of traits or yield, and it is difficult to make a major breakthrough

Method used

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  • Seed production method of hybrid corn seeds 'Xiannong 202'

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Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: The specific breeding process of the hybrid Xiannong 202 of the present invention

[0023] Xiannong 202 was bred by Beijing Golden Nonghua Seed Co., Ltd. in 2008 with the self-selected line 7P1513 as the female parent and Chang 7-2 as the male parent. Among them, 7P1513 was bred by 6 generations of X1132X bagging self-crossing; the male parent Chang 7-2 was obtained from the Agricultural Science Institute of Anyang City, Henan Province.

[0024] 1) Participated in the Beijing Golden Nonghua Seed Variety Comparison Test in 2009, with an average yield of 779 kg per mu, an increase of 5.3% compared to the control Toyota No. 6. The production table is shown in Table 1.

[0025] Table 1 Yield results of Xiannong 202 variety comparison experiment in 2009 Unit: KG

[0026] serial number

Experimental point

Shannon 202

Toyota 6

Yield rate

1

Tongliao, Inner Mongolia

770.9

740.3

4.1

2

Chifeng, Inner Mongoli...

Embodiment 2

[0032] Embodiment 2: the seed production technology of hybrid Xiannong 202 of the present invention

[0033] 1. Ensure safe isolation: No other corn crops can be planted within 300 meters around the seeding field.

[0034] 2. Simultaneous sowing: 7P1513 was used as the female parent, Chang 7-2 was used as the male parent, and sowed at the same time.

[0035] 3. Appropriate line ratio: The ratio of father and mother lines is 1:5, that is, every 5 lines of female lines are planted with 1 line of male line, 6,000 plants / mu are reserved for female lines, 1,200 plants / mu are reserved for male lines, and the yield is 500 More than one kilogram, the high-yield field can reach 600 kilograms.

[0036] 4. Eliminate impurity and remove inferiority: Before the father and mother parents spin silk, remove all the miscellaneous plants in the father and mother parent lines, and mutate the plants.

[0037] 5. Detasseling the female parent and eradicating the male parent. Detasseling the fem...

Embodiment 3

[0040] Embodiment 3: the cultivation technique of hybrid Xiannong 202 of the present invention

[0041] 1. Appropriate density: ① The spring sowing of the middle-maturing group in Inner Mongolia is 4000 plants / mu.

[0042] 2. Fertilization level: This variety has a moderate growth period and can be sown in spring and summer. Its disease resistance and lodging resistance are better than Toyota 6. It has strong ridge resistance. , Fertilizer management.

[0043] 3. Corn borer control should be carried out at the end of the corn heart leaf stage.

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Abstract

The invention belongs to the field of heterosis utilization and in particular relates to a seed production method of hybrid corn seeds 'Xiannong 202'. The hybrid corn seeds 'Xiannong 202' are produced from an inbred line '7P1513' as a female parent and an outbred line 'Chang 7-2' as a male parent, and have the characteristics of high and stable yield, good disease resistance and high biological yield.

Description

technical field [0001] The invention relates to a seed production method of a corn hybrid Xiannong 202, which belongs to the field of utilization of corn heterosis. Background technique [0002] The narrow germplasm resources of maize have seriously hindered the development and progress of maize breeding and production in my country. Most of the hybrids bred in my country in the past 20 years are derived from Lancaster, Rhett Yellow Maya The four systems of Luda Honggu and Tangsipingtou not only have the problem of genetic vulnerability, but also the selected inbred lines and hybrid combinations have no characteristics in terms of traits or yield, and it is difficult to make a major breakthrough. In order to meet the increasing food needs of the Chinese population and the needs of corn deep-processing products, breeding new corn varieties with high yield, multi-resistance and wide adaptability is the primary task of the corn breeding community in my country. [0003] The his...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 林勇阳庆华董福增
Owner BEIJING KINGS NOWER SEED S&T
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