Method for identifying fleahopper-resistant cotton

An identification method, a technique for mirid bugs, applied in botany equipment and methods, horticulture, applications, etc., can solve long-term problems such as

Inactive Publication Date: 2011-03-02
INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, scientists have not excavated and cloned the effective control gene of Lygus ...

Method used

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  • Method for identifying fleahopper-resistant cotton
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  • Method for identifying fleahopper-resistant cotton

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] experiment procedure:

[0029] (1) The test was carried out in a net room with a length of 20 meters, a width of 2.5 meters, and a height of 1.8 meters. The Sizi cotton 213gl provided by the Germplasm Resources Office of the Cotton Research Institute of the Chinese Academy of Agricultural Sciences was used as a control variety, and the dry farming of the Hebei Academy of Agricultural Sciences was carried out. The provided Hengmian No. 4 is the tested variety. Plant 10 strains of Sizi cotton 213gl and Hengmian No. 4 in the net room, repeat 3 times, and plant 30 strains of Sizi cotton 213gl and Hengmian No. 4 in total. Can control 1-2 times seedling aphid;

[0030] (2) Cover the outside of the mesh room with an 80-mesh nylon mesh cover to prevent the invasion of pests and natural enemies;

[0031] (3) During the full bud stage of cotton growth, the adults of Miridus stinkbug were released, and 2 adults were released per square meter. The released miridids were collecte...

Embodiment 2-7

[0036] The test procedure is the same as in Example 1, except that Jinmian 26 provided by the Cotton Research Institute of Shanxi Academy of Agricultural Sciences, and Zhong4717, BRS-10, Chizhou Red Leaf Cotton, HG-E-12 provided by the Cotton Research Institute of the Chinese Academy of Agricultural Sciences were respectively used. Heshiya No. 1 was the tested variety. The test results are also shown in Table 1.

[0037] Table 1. Test results of cotton varieties resistant to mirid bugs

[0038]

[0039] It can be seen from the experimental results that, with Sizi cotton 213gl as the control, the leaf damage index of Shiyaxi No. 1 was 90.97%, the rate of cotton bud damage and decline was 88.51%, and the comprehensive judgment was high resistance; Hengmian No. 4, Zhong 4717, Jinmian No. 26. BRS-10, Chizhou Red Leaf Cotton, HG-E-12 leaf damage index reduction rates were: 67.07%, 68.83%, 69.34%, 71.43%, 80.95%, 67.97%, cotton bud damage reduction rates were: 70.18 %, 71.63%, ...

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Abstract

The invention relates to a method for identifying fleahopper-resistant cotton. The method has the following steps: a control variety and a checked variety are planted in a screen growth room; the fleahopper are released at the full bud period of cotton growth; harm to blades and squares of the control variety and the checked variety is investigated six days after larvae are inoculated and the cotton variety resistant to the fleahopper is identified according to the blade harm index decreasing rate and the square harm index decreasing rate. The method provided by the invention features good practicability and operability and stable and reliable identification result.

Description

technical field [0001] The invention relates to a method for identifying cotton against mirid bugs. Background technique [0002] In 1997, my country began to commercially plant transgenic insect-resistant cotton. By 2009, the planting area of ​​transgenic insect-resistant cotton accounted for about 70% of the total cotton planting area in the country. So far, there is only a single type of insect-resistant cotton in China, which is basically resistant to Lepidoptera pests such as cotton bollworm. At present, the widely planted Bt genetically modified cotton has effectively controlled the harm of major Lepidoptera pests such as cotton bollworm, thus reducing the use of chemical pesticides in cotton fields, especially during the critical period of the occurrence of mirid bugs. As a result, the population of Miridus gnats increased sharply, and minor pests such as Mirids gnats rose to become major pests, and developed in a serious catastrophic trend. [0003] Lygus stinkbug ...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G13/00
Inventor 雒珺瑜崔金杰马艳张帅王春义吕丽敏辛惠江李春花吴冬梅
Owner INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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