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Saline-tolerant pest-disease-resistant cotton variety breeding method

A cotton variety, saline-alkali-resistant technology, applied in the direction of botany equipment and methods, application, plant genetic improvement, etc.

Inactive Publication Date: 2014-11-05
新疆金宏祥高科农业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the cotton varieties in our country are single-resistant varieties at present. In order to promote the sustainable development of cotton in our country, we must pay attention to and strengthen the breeding of cotton resistance to diseases and insect pests and salt and alkali, and innovate new products that are resistant to salt and alkali, various diseases and insect pests, and have compound resistance. Sexual New Varieties of Cotton

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 2) Planting step 1) obtained 5 hybrid F 1 Generation, self-inbred to get F 2 generation, planting F 2 Generation, F 2 For each combination, its resistance to diseases and insect pests or salt and alkali resistance is identified, and each combination only identifies the species of disease and insect pest resistance or salt and alkali resistance of its corresponding resistant parent, and screens out those with high resistance to diseases and insect pests or high salt and alkali resistance and A single plant with similar agronomic and yield traits to the recurrent parent R is backcrossed with the recurrent parent R to obtain a backcross BC 1 f 1 generation;

[0019] 3) The backcross BC obtained in planting step 2) 1 f 1 Generation, self-delivered BC 1 f 2 generation, planted BC 1 f 2 For each generation, each combination is identified for its resistance to diseases and insect pests or salt and alkali resistance, and each combination only identifies the species of...

Embodiment 2

[0027] 2) Planting step 1) obtained 5 hybrid F 1 Generation, self-inbred to get F 2 generation, planting F 2 Generation, F 2 For each combination, its resistance to diseases and insect pests or salt and alkali resistance is identified, and each combination only identifies the species of disease and insect pest resistance or salt and alkali resistance of its corresponding resistant parent, and screens out those with high resistance to diseases and insect pests or high salt and alkali resistance and A single plant with similar agronomic and yield traits to the recurrent parent R is backcrossed with the recurrent parent R to obtain a backcross BC 1 f 1 generation;

[0028] 3) The backcross BC obtained in planting step 2) 1 f 1 Generation, self-delivered BC 1 f 2 generation, planted BC 1 f 2 For each generation, each combination is identified for its resistance to diseases and insect pests or salt and alkali resistance, and each combination only identifies the species of...

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Abstract

The invention discloses a breeding method of a saline-tolerant pest-disease-resistant cotton variety. The invention relates to the technical field of cotton stress-resistance disease-resistance breeding. According to the invention, a cotton high-yield variety Dangza 02-3 or Quanmian No.5 is adopted as a recurrent parent. A variety Chuan 52-128 with high fusarium wilt resistance, a variety Zhongzhi BD18 with high verticillium wilt resistance, a variety Chuankang 77 with morphological aphid resistance, a variety U82-1 with high cotton bollworm resistance, and a variety Shannong N02 with saline tolerance are adopted as resistance source parents. With synchronous backcrossing and convergent hybridization methods, 5 main cotton pest-disease resistance sources and stress-resistance genes are converged and introduced into the high-yield cotton variety with a same genetic background, such that the multi-resistance high-yield cotton novel variety is obtained. The cotton variety has high resistances against 4 pest diseases, and is tolerant to saline. Other agronomic and yield traits of the variety are highly consistent with those of the original recurrent parent. With the method, yield can be increased, and environmental pollution caused by pesticide application can be reduced.

Description

technical field [0001] The invention specifically relates to a method for selecting a salt-alkali-resistant, disease-and-insect-resistant cotton variety, and belongs to the technical field of cotton disease-resistant breeding. Background technique [0002] Cotton is an important economic crop in my country, and my country is one of the major cotton-producing countries in the world. During the growth of cotton, it is often damaged by various diseases and insect pests. The main diseases and insect pests such as cotton blight, Verticillium wilt, cotton bollworm, cotton red bollworm, cotton spider mite, and cotton aphid are becoming more and more serious. In general, cotton suffers from diseases and insect pests. The damage can cause economic losses of 5-15%, and if no control is carried out, it can cause 30%-50% losses. Spraying pesticides can effectively control the damage of cotton diseases and insect pests and increase production. However, the long-term use of pesticides in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 章清杞李晓燕陈幼玉
Owner 新疆金宏祥高科农业股份有限公司
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