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Seed production method of corn hybrid Yefeng 160

A technology of hybrids and corns, applied in the direction of botany equipment and methods, applications, plant genetic improvement, etc., can solve the problem of inbred lines and hybrid combinations with no characteristics in yield, hindering the development and progress of corn breeding and production, corn germplasm To avoid problems such as limited resources, to achieve the effect of good quality, high yield, and high horny content

Inactive Publication Date: 2014-08-13
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 corn hybrid Yefeng 160
  • Seed production method of corn hybrid Yefeng 160
  • Seed production method of corn hybrid Yefeng 160

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Embodiment 1

[0019] Embodiment 1: The specific breeding process of hybrid Yefeng 160 of the present invention

[0020] Yefeng 160 was bred by Beijing Golden Nonghua Seed Co., Ltd. in 2008 with the self-selected line M13B as the female parent and S424 as the male parent. Among them, M13B was bred from X1132X bagging inbred line for 6 generations; male parent S424 was bred after 6 generations of blood bagging inbred line based on American corn hybrids.

[0021] 1) In 2010, the average yield of 19 points of spring sowing in East China and North China was 784.4 kg per mu, which was 10.4% higher than that of Zhengdan 958. The production table is shown in Table 1.

[0022] Table 1 2010 Yefeng 160 variety experimental yield results Unit: KG

[0023]

[0024] 2) In 2011, the average yield of spring-sowed varieties in East China and North China was 785.2 kg per mu at 21 points, which was 9.5% higher than that of the control Zhengdan 958. The production table is shown in Table 2.

[0025] Tab...

Embodiment 2

[0029] Embodiment 2: the seed production technology of hybrid Yefeng 160 of the present invention

[0030] 1. Ensure safe isolation: No other corn crops can be planted within 300 meters around the seeding field.

[0031] 2. Simultaneous sowing: M13B as the female parent, S424 as the male parent, and sowed at the same time.

[0032] 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, 6000 plants / mu are reserved for the female line, 1200 plants / mu are reserved for the male line, and the yield is 500 More than one kilogram, the high-yield field can reach 600 kilograms.

[0033] 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.

[0034] 5. Detasseling the female parent and eradicating the male parent. Detasseling of the female parent is the ce...

Embodiment 3

[0037] Embodiment 3: the cultivation technique of hybrid Yefeng 160 of the present invention

[0038] Sowing in North East China from April 25th to May 5th, the planting density is about 4,000 plants / mu, and the application of P and K fertilizers is increased under the condition of ensuring N fertilizer, and the amount of pure N during the growth period is 15.0-18.0 kg / mu , the amount of P2O5 is 8.0-10.0 kg / mu, and the amount of K2O is 8.0-10.0 kg / mu. Application method: 1 / 3 of the nitrogen fertilizer and all the phosphorus and potassium fertilizers are applied as base fertilizer or seed fertilizer, and 2 / 3 of the nitrogen fertilizer is used as top dressing, and it is applied during the big bell mouth period.

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Abstract

The invention belongs to the hybrid vigor utilization field, and concretely relates to a seed production method of corn hybrid Yefeng 160. The corn hybrid Yefeng 160 is produced by using a selfing line M13B as a female parent and a selfing line S424 as a male parent. The above hybrid has the characteristics of high yield, stable yield, strong disease resistance and high biological yield.

Description

technical field [0001] The invention relates to a seed production method of a corn hybrid Yefeng 160, 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 histo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 李绍明林勇赵洪建
Owner BEIJING KINGS NOWER SEED S&T
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