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A method for screening cold-resistant cotton varieties and its application

A cotton variety and variety technology, applied in application, horticultural methods, cotton cultivation, etc., can solve the problems of cold resistance difference of cotton varieties, freezing damage of cotton seedlings, cumbersome identification standards, etc., and promote the process of cold resistance breeding , reduce non-cold stress injury, and assess the effect of rigorous methods

Active Publication Date: 2022-05-27
INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The method of this invention directly restores growth at normal temperature from low temperature treatment, which is easy to cause freezing damage to cotton seedlings, reduces the survival rate and thus brings great errors, and the identification standards are cumbersome and the indicators are fuzzy, so it is not suitable for large quantities of cotton Screening of populations or varieties, and the treatment time is short, and it does not reach the most significant difference in cold resistance among cotton varieties

Method used

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Embodiment Construction

[0042] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0043] like Figure 1-3 Shown is the picture of cotton seedlings in the method for screening cold-resistant cotton varieties of the present invention.

[0044] The cotton varieties of the present embodiment are selected from the cotton varieties in various ecological regions at home and abroad such as the United States, Tajikistan, Kyrgyzstan, Uzbekistan, the Yellow River Basin, the Yangtze River Basin, the Northwest Inland, and the northern special early matur...

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Abstract

The invention discloses a method for screening cold-resistant cotton varieties and an application thereof, comprising the following steps: (1) sowing cotton seeds of different varieties, seedlings are unearthed 2 days after sowing, and seedlings with uneven growth are removed on the 4th day, and kept Other seedlings continued to grow; (2) the seedlings grew to the 7th day and the cotyledons were flattened, after the seedlings were cold-adapted, then cold-treated, then heat-adapted and recovered, the survival rate and the statistical cotyledon cold damage level were counted, and then the morphological indicators were calculated. The relative electrical conductivity of the detached leaves after cold treatment for 72 hours was measured, and the cold resistance was evaluated according to the morphological index or relative electrical conductivity.

Description

technical field [0001] The invention belongs to the technical field of screening cotton varieties, and in particular relates to a method for screening cold-resistant cotton varieties and an application thereof. Background technique [0002] Cotton is a worldwide important fiber crop and plays an important role in the national economy. With the "westward, eastward, and northward" of the main cotton producing areas, Xinjiang has become the main cotton planting area in my country, and the cotton production in Xinjiang accounts for more than 80% of my country's output. Due to the specific ecological and climatic conditions in Xinjiang, cotton fields are subjected to varying degrees of "cold spring" low temperature damage every year, which seriously affects the growth and production of cotton. Therefore, the selection of cold-tolerant cotton varieties in production is of great significance for resisting the low temperature damage in Xinjiang and realizing high-quality and high-y...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/04A01G7/06A01G22/50
CPCA01H1/04A01G7/06A01G22/50
Inventor 庞朝友杨永飞赵新华葛常伟张思平刘绍东马慧娟陈静沈倩刘瑞华张小萌
Owner INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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