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.
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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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