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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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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 degenerated to varying degrees, and the damage of various new diseases and new physiological races has weakened the resistance, resulting in a 5-10% reduction in output. Therefore, there is an urgent need for breeding Develop new varieties to replace the varieties currently used in production

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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Embodiment

[0031] Example: hybrid seed production technology and cultivation technology of "Bidan No. 18".

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

[0033] 1. Land selection and isolation area setting: Select land with medium or higher fertility and guaranteed harvest from drought and flood as the farming field. In the safe isolation area, the breeding inbred line should be more than 500 meters; the hybrid seed production should be more than 300 meters.

[0034] 2. Sowing at the right time: When the soil temperature stabilizes above 10°C, it should be sown in time. Spring sowing in southeastern Yunnan is generally suitable for sowing in mid-to-late April.

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

[0036] 4. The suitable parent-to-bank ratio is 1:5.

[0037] 5. Adjustment of the parental sowing date: In order to ensure that the paren...

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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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