Screening method for testing high-temperature resistance of cotton in field

A screening method and high-temperature-resistant technology, applied in the fields of botanical equipment and methods, plant cells, horticulture, etc., can solve the problem of insufficient research on the mechanism of high-temperature damage.

Active Publication Date: 2014-06-04
IN THE COTTON SEED IND TECH
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AI Technical Summary

Problems solved by technology

[0004] Carrying out the identification and screening of cotton high-temperature-resistant germplasm resources is an important technical link for cultivating new high-temperature-resista

Method used

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  • Screening method for testing high-temperature resistance of cotton in field
  • Screening method for testing high-temperature resistance of cotton in field
  • Screening method for testing high-temperature resistance of cotton in field

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Embodiment 2

[0018] Embodiment 2 This method appraises the application value of high temperature resistance

[0019] In July 2012, Changde City, Hunan Province experienced a high temperature above 35°C for 8 consecutive days. After the high temperature ended, the shedding rate of buds of different materials was investigated on July 25, and the number of bolls per plant was investigated on September 10. The results are shown in Table 2.

[0020] Table 2 Investigation on the shedding rate of buds and the number of bolls per plant

[0021]

[0022] It can be seen from Table 2 that the bud-boll shedding rate of QY-8, Zhong 696 female parent, Zhong 6 and Zhong 48 male parent is relatively low, and the boll formation rate per plant is relatively high, which further verifies the use of pollen germination rate in the present invention to identify cotton tolerance high temperature accuracy.

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Abstract

Disclosed is a screening method for testing high-temperature resistance in cotton breeding, which provides a basis for screening new high-temperature resistant materials of cotton and breeding of new high-temperature resistant varieties. The screening method can overcome technological difficulties that pollen abortion is caused, many cotton buds and bolls wither and fall, yield and quality are reduced by manually performing high-temperature treatment in the field, observing indoors, calculating pollen germination rate and judging high-temperature resistance of the cotton. The screening method is simple to operate, accurate and efficient, breeding period can be shortened, breeding efficiency can be improved, and the screening method can be widely applied in high-temperature resistance testing of the cotton.

Description

technical field [0001] The invention relates to the field of plant breeding, and specifically identifies high-temperature-resistant cotton materials in the field, improves selection efficiency and accuracy, and shortens the breeding cycle. The method of the invention is particularly suitable for cotton high-temperature-resistant breeding. Background technique [0002] Cotton is the most important fiber crop in the world and one of the main oil crops. Cotton production is greatly affected by temperature changes. In the Yangtze River Basin of my country and the cotton area in eastern Xinjiang, there are often continuous high-temperature weather from July to August. At this time, cotton is in the flowering and boll-setting stages. The high temperature causes cotton pollen to be aborted, a large number of buds and bolls fall off, and the yield and quality decrease. . When cotton is in a high-temperature environment, its physiological and biochemical processes cannot proceed nor...

Claims

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Application Information

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IPC IPC(8): A01G1/00C12N5/04
Inventor 郜新强郭香墨张小伟马宝玲张进忠周关印
Owner IN THE COTTON SEED IND TECH
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