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Field Removal of Impurity and Purity of Shandan 8806 Maize Hybrid

A technology of hybrids and corns, applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve the problem of low activity, achieve accurate purity testing methods, improve the level of advantage utilization, and maintain the effect of yield potential

Inactive Publication Date: 2012-02-01
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The drug has pre-emergence herbicidal activity, but the activity is lower than that of post-emergence

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The inbred line L102, which is sensitive and lethal to the herbicide nicosulfuron at the seedling stage, was selected as the female parent, and the maize inbred line K22 with good resistance to it was selected as the male parent, and the corn hybrid Shandan was produced according to the conventional method. 8806.

[0033] When the hybrid seedlings of maize Shandan 8806 develop to the stage of three leaves and one heart to five leaves and one heart (the optimized plan is three leaves and one heart stage), combined with weed control in the corn field, a mixed herbicide containing nicosulfuron (suspending agent, including nicosulfuron) was used. 2.5% of siloxane and 19.5% of atrazine), weeds and Shandan 8806 corn plants were sprayed on stems and leaves at a dose of 120 grams per mu.

[0034] Because the L102 plant of the female parent inbred line is not resistant to the herbicide nicosulfuron, it can stop growing after application, and the new top leaves turn chlorotic in ...

Embodiment 2

[0036] The inbred line L102, which is sensitive and lethal to the herbicide nicosulfuron at the seedling stage, was selected as the female parent, and the maize inbred line K22 with good resistance to it was selected as the male parent. The corn hybrid Shandan 8806 was produced according to the conventional method. .

[0037] When the hybrid seedlings of maize Shandan 8806 develop to the stage of three leaves and one heart to five leaves and one heart (the optimized plan is three leaves and one heart stage), combined with weed control in corn field, use nicosulfuron herbicide (oil suspension agent, the active ingredient content is 40 gram nicosulfuron / liter), the weeds and corn plants were sprayed on the stems and leaves according to the dosage of 70-100 grams per mu.

[0038]Because the L102 plant of the female parent inbred line is not resistant to the herbicide nicosulfuron, it can stop growing after application, and the new top leaves turn chlorotic in 4 to 5 days, and the...

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Abstract

The invention discloses a method for removing impurity and maintaining purity in the field of Shandan 8806 corn hybrid. In the method, the corn inbred line L102 is selected as the female parent, and the corn inbred line K22 is used as the male parent, and the corn hybrid is produced by hybridization according to a conventional method. Shandan 8806; when the hybrid seedlings of maize Shandan 8806 develop to the stage of three-leaf and one-core to five-leaf and one-heart stage, combined with corn field weeding, the herbicide nicosulfuron or a mixed herbicide containing nicosulfuron is selected to control field weeds Spray with the stems and leaves of Shandan 8806 hybrid seedlings, remove the female parent inbred plants, and then carry out thinning and finalizing according to the seedling conditions in the field. This method also achieves the effect of removing impurities and maintaining the purity of the hybrid while weeding the corn field, ensuring the field purity of the corn hybrid Shandan 8806, and can also provide a simple, intuitive and accurate method for the corn hybrid Shandan 8806. purity test method.

Description

technical field [0001] The invention belongs to the technical field of crop heterosis utilization, in particular to a field method for removing impurities and maintaining purity of Shandan 8806 corn hybrid. Background technique [0002] Maize is one of the earliest and most widely used crops to utilize heterosis in agricultural production. For a long time, the use of crop heterosis has become an important measure to increase corn yield and improve quality. Generally, the production of corn hybrids can be obtained in two ways: [0003] (1) Manual tasseling method; [0004] (2) Three-line method of cytoplasmic male sterility, etc. [0005] However, in the actual production of corn hybrid seeds, due to various reasons, it is impossible for people to completely and cleanly extract the female parent male flowers of the corn inbred line in a timely manner, or sometimes due to climate and other reasons, the female parent inbred line is male sterility. The degree of sterility ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 吴权明薛吉全毛建昌张兴华南文华李发民路海东
Owner NORTHWEST A & F UNIV
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