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Screening method of cotton varieties or strains resisting Bemisia tabaci

A technology for cotton varieties and Bemisia tabaci is applied in the field of screening Bt transgenic cotton and conventional cotton varieties that are resistant to Bemisia tabaci. , good accuracy and scientificity, the effect of shortening the time

Inactive Publication Date: 2013-06-19
INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since Bemisia tabaci was not the main pest in the past, there is no method for screening cotton varieties (lines) resistant to Bemisia tabaci in my country

Method used

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  • Screening method of cotton varieties or strains resisting Bemisia tabaci
  • Screening method of cotton varieties or strains resisting Bemisia tabaci
  • Screening method of cotton varieties or strains resisting Bemisia tabaci

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Test method

[0036] (1) The test is carried out in the net room (24 meters long, 3.0 meters wide and 2.0 meters high). Planted (lines) in the net room, a total of 139 cotton varieties (lines). Each variety (line) planted 10 cotton varieties (lines), all repeated 3 times, the cotton cultivation row spacing in the net room was 0.80m, the plant spacing was 0.25m, and the seedling stage could be prevented and controlled 1-2 times seedling aphid;

[0037] (2) A 100-mesh nylon net is placed on the outside of the net to prevent the invasion of pests and natural enemies;

[0038] (3) The adults of Bemisia tabaci were artificially released during the 6-9 leaf stage of cotton growth, with an average of 40-50 adults released per plant. The Bemisia tabaci released were natural populations collected from the field;

[0039] (4) 1500 times liquid of phoxim was sprayed in the net room 7 days before releasing Bemisia tabaci to kill natural enemies;

[0040] (5) Investigate the ...

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Abstract

The invention provides a screening method of cotton varieties or strains resisting Bemisia tabaci. The method comprises artificially inoculating the Bemisia tabaci onto cottons of different varieties, selecting leaves with heaviest Bemisia tabaci damage on each cotton plant as standard leaves after 10-15 days of inoculation, counting numbers of adults, nymph and pupa of the Bemisia tabaci on the standard leaves, respectively representing with X, Y and Z, counting value zones of X, Y and Z, and selecting cotton varieties or strains with relatively few X, Y and Z as the cotton varieties or strains resisting the Bemisia tabaci. The method is relatively strong in practicality and maneuverability, and easy to operate, and can be used for selecting the cotton varieties or strains resisting the Bemisia tabaci.

Description

technical field [0001] The invention relates to a method for screening cotton varieties (lines) resistant to bemisia tabaci, in particular to a method for screening transgenic cotton and conventional cotton varieties (lines) resistant to bemisia tabaci. Background technique [0002] Since 1997, my country has started to commercially plant transgenic Bt cotton, and by 2010, the planting area of ​​transgenic Bt cotton accounted for more than 76% of the total cotton area in the country. The current transgenic insect-resistant cotton in my country has a narrow spectrum of insect resistance, and is only resistant to Lepidoptera pests such as cotton bollworm and red bollworm. After large-scale planting of transgenic Bt insect-resistant cotton, the harm of pests such as cotton bollworm and red bollworm has been effectively controlled. However, due to the drastic reduction in the use of chemical pesticides in cotton fields, the status of pests has changed. Smoke powder, which was or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/04
Inventor 雒珺瑜崔金杰马艳王春义辛惠江张帅吕丽敏吴冬梅李春花
Owner INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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