Method for breeding drought lolerant peanut

A new variety and variety technology, applied in the field of breeding of new polymorphic peanut varieties, can solve problems such as a single resistance index, and achieve the effects of reducing water evaporation, prolonging drought resistance time, and having strong operability.

Inactive Publication Date: 2005-02-23
CROP RES INST GUANGDONG ACAD OF AGRI SCI
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AI Technical Summary

Problems solved by technology

The peanut varieties currently bred are all varieties with a single resistance indicator. Since the drought resistance of crops is controlled by multiple genes, it is difficult to breed varieties with ideal drought resistance indicators in a short period of time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Breeding of polymorphic varieties composed of pure lines of high-yield monoclonal antibodies:

[0024] (1) Parental selection principle

[0025] 1. Select high-quality and high-yielding peanut varieties as the female parent. In this embodiment, 4 high-yielding varieties are selected, including Yueyou 7, Yueyou 223, Yueyou 13, and Shanyou 523 (the first 3 are varieties bred by the Guangdong Academy of Agricultural Sciences, and the latter bred for Shantou Agricultural Science Research Institute). The average yield per mu of these 4 varieties exceeded 300 kg in the peanut regional test in Guangdong Province.

[0026] 2. The male parent must have one or two of the three drought-resistant traits: deep root type, transpiration resistance type, and drought stress resistance type. Since there is no peanut germplasm with two drought-resistant traits at present, the germplasm with one drought-resistant trait is selected for use in this embodiment, as follows:

[0027] There are...

Embodiment 2

[0056] Breeding of polymorphic varieties composed of high-yielding double-resistant pure lines: In Example 1, the first drought-resistant type anti-transpiration type line, the second drought-resistant type deep-root type line and the third drought-resistant type anti-drought type respectively The stress-resistant strains were crossed, and the transpiration-resistant drought stress-resistant and deep-root-drought-resistant double-resistant strains were selected respectively.

[0057] A02-1 (anti-transpiration type) × A02-6 (drought stress-resistant type) → 3rd to 5th generation selfing stable directional selection → (anti-transpiration-anti-drought stress type) A02-61

[0058] A02-1 (anti-transpiration type) × A02-7 (drought stress-resistant type) → 3rd to 5th generation selfing stable directional selection → (transpiration-resistant drought stress type) A02-62

[0059] A02-2 (anti-transpiration type) × A02-6 (drought stress-resistant type) → 3rd to 5th generation selfing stab...

Embodiment 3

[0077] Breeding of polymorphic varieties composed of high-yielding three-antibody pure lines:

[0078] In Example 2, after the second variety breeding was completed, 8 lines with two drought-resistant traits were obtained, and the lines with different drought-resistant traits in Example 2 were crossed, and 4 peanut lines with excellent comprehensive drought-resistant traits were bred. :

[0079] (Anti-transpiration-anti-drought stress type) A02-61×(Deep root type-Drought stress-resistant type) A02-65→Self-stable directional selection for 3rd to 5th generations→(Anti-transpiration-deep root type-Drought stress-resistant type) A02-101

[0080] (anti-transpiration-anti-drought stress type) A02-62×(deep root type-drought stress-resistant type) A02-66→Self-stable directional selection for 3rd to 5th generations→(anti-transpiration-deep root type-drought stress-resistant type) A02-102

[0081] (Anti-transpiration-anti-drought stress type) A02-63×(Deep root type-Drought stress-res...

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Abstract

A method for culturing the drought-resistant peanut includes such steps as choosing the deep-root peanut, evaporating-resistant peanut and drought-resistant peanut as male parents choosing high-yield peanut as female parent, respective hybridization to obtain polymorphic variety, respective crossing between high-yield deep-root peanut and high-yield drought-resistant peanut and between high yield evaporation-resistant one and high-yield drought-resistant one, and crossing between high-yield deep-root drought-resistant one and high-yield evaporating-resistant drought-resistant one.

Description

technical field [0001] The invention relates to the technical field of peanut breeding methods, in particular to a breeding method for water-saving and drought-resistant peanut polymorphic new varieties. Background technique [0002] Water is a finite resource on Earth and agriculture has become its largest source of use and loss. Developed countries (such as the United States) have implemented research programs on agricultural water management and genetic improvement. Improving the drought resistance of crops through genetic improvement has become the main research entry point for most crops. The International Research Institute of Semi-Arid Crops (ICRISAT) recognized in the 1970s the importance of genetically improving peanuts to adapt to water stress and use water more efficiently. According to the research of the International Semi-Arid Crops Research Institute (ICRISAT), the drought in the late growth period not only reduces the yield of pean...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 周桂元梁炫强李少雄
Owner CROP RES INST GUANGDONG ACAD OF AGRI SCI
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