Breeding method for high-oleic acid high-yield peanut

A high-oleic acid, high-yield technology, applied in botany equipment and methods, plant products, angiosperms/flowering plants, etc., can solve the problem of difficult to obtain high-oleic acid and high-yield peanut varieties or lines, low breeding efficiency, direct selection, etc. problem, to achieve the effect of fast determination, simple breeding method and less blindness

Inactive Publication Date: 2009-08-26
SHANDONG PEANUT RES INST
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of high-oleic acid parent materials and the inability to directly select for high-oleic acid traits, the high-oleic acid genes in the population cannot be fixed and accumulated and lost, making it difficult to obtain high-oleic acid and high-yield peanuts with good comprehensive traits varieties or strains, and the breeding efficiency is low
Yu Shanlin, the first inventor of this patent, obtained cobalt in 1993 60 Gamma ray irradiated mutants of the 79266 strain, obtained through 6 consecutive generations of self-crossing, a new stable peanut line with high oleic acid content SPI098, the oleic acid content reached 85.95%, which is currently the highest oleic acid content of the erect peanut A new line of peanuts with low yield

Method used

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Experimental program
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Effect test

Embodiment 1

[0024] In 2000, the aphid-resistant and red spider-resistant line S17 (from the International Semi-arid Institute of India) was crossed with the germplasm SPI098 with high oleic acid content, and it was added in Hainan in winter. The hybrid peanuts were arranged according to the field experiment design method of conventional breeding, and a single plant and a single seed were planted in the field, and the F1 generation did not undergo any selection. In the F2 generation, the single plant and single seed were still planted in the unit of the parent combination, and the hybrid offspring segregated strongly in the F2 generation. The oleic acid content of peanut single seeds was determined by non-destructive method from 30 seeds of the screened excellent individual plants, and 4 single seeds with oleic acid content higher than 75% were screened out. The selected seeds with high oleic acid content continued to be planted on a single plant and single seed in the F3 generation, and a...

Embodiment 2

[0038] Tai 8603 (bred by Taizhou Agricultural Science and Technology Institute, Jiangsu Province) was used as the male parent, and SPI098 was used as the female parent for hybrid combination, and the peanut seeds selected for each generation were planted per plant and single seed. The F1 generation was not selected; in the F2-F3 generation, high oleic acid pressure screening was carried out. Single seeds with oleic acid content exceeding 75% were selected in the F4-F5 generation, and after high-yield pressure screening, an excellent single plant was selected. After multiple generations of high-oleic acid and high-yield pressure double selection and directional cultivation, a stable high-oleic high-yielding peanut variety E16 with good comprehensive properties was obtained, namely Invention 2.

[0039]E16: The growth period is about 114 days. Sparse branching type, main stem height 37.5 cm, side branch length 42.6 cm, total branches 5-7, fruiting branches about 5, fruiting num...

Embodiment 3

[0046] Puhua 14 (selected by Puyang Academy of Agricultural Sciences, Henan Province) was used as the male parent, and SPI098 was used as the female parent for hybrid combination, and the selected seeds of each generation were planted on a single plant and single seed. The F1 generation was not screened; the F2-F3 generation was screened for high oleic acid pressure, and the selected high-oil single seeds with an oleic acid content of more than 75% were screened for high-yield pressure in the F4-F6 generation, and an excellent single plant was screened out. After multiple generations of high-oleic acid and high-yield pressure screening and directional cultivation, a stable high-oleic high-yielding peanut variety E12 with good comprehensive properties was obtained, namely Invention 3.

[0047] E12: Thin-branched erect florets, with neat emergence, steady growth, strong seed dormancy and drought resistance, relatively resistant to leaf spot and net spot. The reproductive period ...

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Abstract

The invention provides a breeding method for high-oleic acid high-yield peanut, which includes steps: (1) coordinate parent combination: selecting high-yield germplasm with good integrated character and germplasm with high oleic acid content SPI098 to combine patent; (2) high oleic acid pressure screening: determining oleic acid of each seed in excellent single plant in early separation generation, and selecting excellent peanut seed with high oleic acid content; (3) high-yield pressure screening: planting the screened peanut seed with high oleic acid content in next generation, separating generation in anaphase, and selecting excellent high-yield single plant; and (4) high-oleic acid high-yield peanut variety or strain obtaining: obtaining novel high-oleic acid high-yield peanut variety or strain through multi-generation high-oleic acid high-yield pressure screening. The breeding method provided by the present invention directly screens according to character of oleic acid content in peanut seed, and has advantages of short breeding period, small blindness, high efficiency, and good economic benefit and social benefit.

Description

technical field [0001] The invention relates to a peanut breeding method, in particular to a peanut breeding method with high oleic acid and high yield. Background technique [0002] Peanut is the main oil crop and economic crop in my country. The main fatty acids in peanut are oleic acid and linoleic acid, and linoleic acid is the root cause of oil spoilage. In common peanuts, the content of oleic acid is about 45%, and the content of linoleic acid is about 35%. Peanut oil made from ordinary peanuts contains a large amount of linoleic acid. If no preservatives are added, it will be easily spoiled; if preservatives are added, it will have adverse effects on human health. In the past ten years, increasing the oleic acid content of peanuts and reducing the linoleic acid content of peanuts has been a research hotspot for peanut breeders to improve peanut quality. Oleic acid can lower the amount of total blood cholesterol and bad cholesterol, but not the amount of good cholest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04A01H5/00A01H5/08
Inventor 禹山林杨庆利闵平曹玉良潘丽娟朱凤
Owner SHANDONG PEANUT RES INST
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