Cross-breeding seed production method for maize variety

A hybrid seed production and corn technology, applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., can solve the problems of inability to adapt to the yield level, weakened resistance, and yield reduction, and achieve excellent quality, good yield stability, good taste effect

Inactive Publication Date: 2011-08-03
云南金穗种业有限公司
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Problems solved by technology

Due to the improvement of cultivation technology and the improvement of production management level, the output level has been far from meeting the needs of the development of the situation.
In addition, because these varieties have been planted for many years, the species have degenera

Method used

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  • Cross-breeding seed production method for maize variety
  • Cross-breeding seed production method for maize variety
  • Cross-breeding seed production method for maize variety

Examples

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[0031] Example: Hybrid seed production technology and cultivation technology of "Bidan 18".

[0032] 1. Hybrid seed production technology of "Bidan 18"

[0033] 1. Land selection and isolation area setting: Select plots with medium or above fertility, drought and flood guaranteeing harvest as farming fields. In the safe isolation zone, breeding inbred lines should be above 500 meters; hybrid seed production should be above 300 meters.

[0034] 2. Sowing in an appropriate time: When the soil temperature is stable and passing 10℃, sowing should be carried out in time. In southeastern Yunnan, spring sowing is generally appropriate in mid-to-late April.

[0035] 3. Reasonable dense planting: Calculated by the mixed area, the number of seedlings per mu is 3500-4000 female parents and 700-1000 male parents.

[0036] 4. It is appropriate to set a ratio of 1:5 for the parental line.

[0037] 5. Parental sowing date adjustment: In order to ensure that parents meet the wrong date during the flowe...

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Abstract

The invention relates to a cross-breeding seed production method for a maize variety with high yield and multiresistance and belongs to the field of utilization of maize heterosis. In the multi-generation self-breeding purification method provided by the invention, a self-bred lines 02H58 and 82 are bred, cross-bred seeds 'Bidan No.18' are produced by using the self-bred line 02H58 as a female parent and the self-bred line 82 as a male parent or using the self-bred line 82 as a female parent and the self-bred line 02H58 as a male parent, and a corresponding seed production technique and a high-yield cultivation technique are provided. The produced cross-bred seeds 'Bidan No.18' have the characteristics of high yield, high quality, multiresistance, high adaptability and the like. The average yield per mu is 635.1 kilograms, which increases 9.95 percent higher than reference seeds 'Andan No.3' averagely. Thus, the cross-bred seeds 'Bidan No.18' are ideal seeds for growing maize currently.

Description

technical field [0001] The invention relates to a seed production technology of corn hybrids, and belongs to the technical field of new agricultural seed breeding. Background technique [0002] Corn is the main food crop in my country, with an annual planting area of ​​about 300 million mu. Since the 1990s, Qianxi No. 4, Bidan No. 10, Huidan No. 4, and Zhadan 202 have been the main varieties of spring corn in most areas of Guizhou and Yunnan, and the varieties have been planted for a long time. The general yield per mu is only 450 About kilograms. Due to the improvement of cultivation technology and the improvement of production management level, the output level has been far from meeting the needs of the development of the situation. In addition, because these varieties have been planted for many years, the species have degenerated to varying degrees, coupled with the harm of various new diseases and new physiological races, the resistance has been weakened, resulting in ...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 罗仕文
Owner 云南金穗种业有限公司
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