Method of hybrid seed production for corn variety

A technology for hybrid seed production and variety, applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., can solve problems such as weakened resistance, reduced yield, and degeneration of species.

Inactive Publication Date: 2010-08-11
云南金穗种业有限公司
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  • Abstract
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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 degenera

Method used

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  • Method of hybrid seed production for corn variety
  • Method of hybrid seed production for corn variety
  • Method of hybrid seed production for corn variety

Examples

Experimental program
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Embodiment

[0032] Example: hybrid seed production technology and cultivation technology of "Bidan No. 13".

[0033] 1. The hybrid seed production technology of "Bidan 13"

[0034] 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.

[0035] 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.

[0036] 3. Reasonable dense planting: Calculated by the mixed area, the female parent of the seedlings per mu is 3200-3500 plants, and the male parent is 600-700 plants.

[0037] 4. The suitable parent-to-bank ratio is 1:5.

[0038] 5. Adjustment of the parental sowing date: In order to ensure that the parent...

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Abstract

The invention relates to a high-yield and multi-resistant method of hybrid seed production for corn variety, belonging to the field of taking advantages of corn hybrid seeds. The method comprises seed selection of inbred lines 216 and 86 by using inbred line 216 as female parent and inbred line 86 as male parent or by using inbred line 86 as female parent and inbred line 216 as male parent to prepare hybrid seed Bidan-13 through multi-generations self-pollination purification, and provides corresponding seed production technique and high-yield culture technique. The prepared Bidan-13 has the characteristics of high yield, good quality, multi-resistance, broad adaptability, and the like; with the average yield per mu of 585.12kg, the corn is averagely increased by 15.37% compared with Xinghuangdan-892, and is an ideal variety for current corn production.

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, spring maize in most areas of Yunnan and Guizhou has been mainly planted with Qianxi No. 4, Bidan No. 3, Luodan, etc., and the varieties have been planted for a long time. The general yield per mu is only about 450 kg. 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 a 5-10% reduction in yield,...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
Inventor 罗仕文
Owner 云南金穗种业有限公司
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