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Abnormal Cotton Chromosomal Fragments and Their Molecular Markers That Can Improve Cotton Fiber Strength

A technology of molecular markers and fiber strength, applied in DNA/RNA fragments, measurement/inspection of microorganisms, angiosperms/flowering plants, etc., can solve problems that restrict genetic improvement of cotton fiber quality, complex genetic mechanism, etc., and achieve rapid and accurate identification stability, speed up the breeding process, and improve selection efficiency and breeding speed

Active Publication Date: 2021-03-30
JIANGSU ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since fiber strength is a quantitative trait controlled by multiple loci, the genetic mechanism is more complicated
More importantly, important quality indicators such as fiber strength and fiber length have a significant negative correlation with yield and yield components, which greatly restricts the genetic improvement of cotton fiber quality.

Method used

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  • Abnormal Cotton Chromosomal Fragments and Their Molecular Markers That Can Improve Cotton Fiber Strength
  • Abnormal Cotton Chromosomal Fragments and Their Molecular Markers That Can Improve Cotton Fiber Strength
  • Abnormal Cotton Chromosomal Fragments and Their Molecular Markers That Can Improve Cotton Fiber Strength

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1. Determination of Chromosomal Segments Related to Cotton High Fiber Strength Traits and Development of Related Molecular Markers

[0041] The high-fiber-strength cotton in the present invention is cultivated by the following steps:

[0042] Using upland cotton 86-1 as a donor, crossing with the male abnormal cotton to obtain triploid F 1(A 1 D. 1 B 1 ), the hexaploid F 1 (A 1 A 1 D. 1 D. 1 B 1 B 1 );

[0043] Using the hexaploid as the female parent, cross with the parent Su 8289 to obtain the pentaploid A 1 A 1 D. 1 D. 1 B 1 , plant all received seeds, and obtain 97 individual plants;

[0044] The obtained pentaploid was backcrossed with Su 8289 to obtain BC 2 f 1 The seeds were all planted, and a total of 384 single plants were obtained, and 50 recombinant types were obtained, of which 36 recombinant types were fertile;

[0045] Will BC 2 f 1 All the individuals of Su 8289 were backcrossed, all planted, and a total of 4331 BC were obtain...

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Abstract

The invention discloses a gossypium anomalum chromosome segment capable of increasing the strength of cotton fiber and molecular markers thereof. The gossypium anomalum chromosome segment capable of increasing the strength of cotton fiber comes from gossypium anomalum and is a segment on the chromosome 1 of the gossypium anomalum and from the SSR (simple sequence repeats) molecular marker of NAU3615 to the SSR molecular marker of JAAS1148; the nucleotide sequence of the SSR molecular marker of NAU3615 is shown as SEQ ID No. 1, and that of the SSR molecular marker of JAAS1148 is shown as SEQ IDNo. 2. The gossypium anomalum chromosome segment capable of increasing the strength of cotton fiber achieves high application value in high-fiber-strength cotton breeding; meanwhile, the SSR molecular markers can applied as a molecular foundation to produced high-fiber-strength cotton varieties.

Description

technical field [0001] The invention relates to the field of cotton breeding, in particular to abnormal cotton chromosome fragments capable of improving cotton fiber strength and molecular markers thereof. Background technique [0002] Cotton fiber is an excellent natural fiber and an important raw material for the textile industry. Due to the continuous acceleration of the processing speed of the textile industry and the improvement of people's living standards, higher and higher requirements are placed on the quality of cotton fibers. Cotton fiber quality consists of many physical properties, mainly: fiber strength, fiber fineness, fiber length and uniformity. Fiber strength refers to the strength of cotton fiber against tensile fracture. When other indicators are basically the same, fiber strength has a positive correlation with yarn and cloth quality. In the case of relatively high speed of modern spinning equipment, the strength of cotton fiber is high, which plays a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N15/11C12N15/82C12Q1/6895A01H5/00A01H6/60
CPCC12N15/8261C12Q1/6895C12Q2600/13C12Q2600/156
Inventor 沈新莲徐珍珍陈爱民闻甜徐鹏孟珊郭琪张香桂
Owner JIANGSU ACAD OF AGRI SCI
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