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Hybrid seed production method of corn cenospecies W1506

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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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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  • Hybrid seed production method of corn cenospecies W1506
  • Hybrid seed production method of corn cenospecies W1506

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Effect test

Embodiment 1

[0021] Embodiment 1: The specific breeding process of hybrid W1506 of the present invention

[0022] W1506 was bred by Beijing Golden Nonghua Seed Industry Co., Ltd. in 2008 with the self-selected line Y558 as the female parent and B8328 as the male parent, and was bred by heterozygous combination. Among them, Y558 was bred from 6 generations of X1132X bagging inbred line; the male parent B8328 was bred from 6 generations of blood bagging inbred line based on American corn hybrids.

[0023] 1) In 2010, the average yield of 19 points of spring sowing in East China North was 778.9 kg per mu, which was 11.4% higher than that of Zhengdan 958. The production table is shown in Table 1.

[0024] Table 1 2010 W1506 Variety Test Yield Results Unit: KG

[0025]

[0026] 2) In 2011, the average yield per mu was 809.8 kg at 21 o'clock in the comparison test of spring sowing varieties in North East China, which was 11.1% higher than that of the control Zhengdan 958. The production ta...

Embodiment 2

[0031] Embodiment 2: the seed production technology of hybrid W1506 of the present invention

[0032] 1. Ensure safe isolation: No other corn crops can be planted within 300 meters around the seeding field.

[0033] 2. Simultaneous sowing: Y558 as the female parent and B8328 as the male parent, sow at the same time.

[0034] 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.

[0035] 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.

[0036] 5. Detasseling the female parent and eradicating the male parent. Detasseling of the female parent is the central p...

Embodiment 3

[0039] Embodiment 3: the cultivation technique of hybrid W1506 of the present invention

[0040] 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 field of heterosis utilization, and specifically provides a hybrid seed production method of corn cenospecies W1506. The method uses an inbred line Y558 as a female parent and an inbred line B8328 as a male parent to produce the corn cenospecies W1506. The cenospecies has the characteristics of high and 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 W1506, 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 history of...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 阳庆华李绍明董福增
Owner BEIJING KINGS NOWER SEED S&T
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