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Breeding Methods of Wheat Dwarf Germplasm

A dwarf and wheat technology, which is applied in the field of selection and breeding of wheat dwarf germplasm, can solve the problems of randomness and unpredictability of the bred germplasm, and achieves the effects of strong repeatability, good predictability, and rapid stability.

Active Publication Date: 2018-01-26
滨州市作物研究所
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Problems solved by technology

[0003] There are many methods for screening dwarf germplasm, but there are randomness and unpredictability in breeding germplasm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Breeding of BY Ai 22-1

[0025] A. Seeding the stable homozygous backcross population of Blue Dwarf Pai Jimai 22

[0026] In the autumn of 2011, the blue and white seeds were sorted from the blue and white seeds of the blue dwarf Paijimai 22 backcross population harvested in the summer, and the sorted blue seeds were sown using a 6-row mobile plot / ear row seeder with a row spacing of 20 cm. The length of the row is 5 meters, and the size of the blue dwarf backcross population is about 1,000. After the emergence of the blue dwarf, a row of Jimai 22 is planted on each side to make the backcross male parent. The mulch is 25 cm long. Overwintering is only covered with plastic film on the blue dwarf. In the spring of 2012, the field wheat is raised (about 2 knots of the blue dwarf in the film) and the film is removed. Immediately fertilize and water after the film is removed. In the first ten days of April, duck egg bamboo and iron wire are used. , Plastic woven cloth to bu...

Embodiment 2

[0036] Breeding of Binzhou BY'ai V8-1

[0037] On the premise of obtaining the stable blue dwarf backcross population seeds of Weimai No. 8 in the early stage, the following dwarf germplasm breeding work was carried out:

[0038] A. In the autumn of 2012, sort the harvested Weimai No. 8 blue dwarf homozygous backcross population seeds by color sorting, and plant the sorted white seeds. Plant 30 m in large and small row planting patterns2 , 3000 seed selection nursery, select 5 self-fertilized and strong dwarf plants.

[0039] B. Through the test planting in the autumn of 2013, the selected dwarf plants were planted in the plant row, and the plant row was identified and compared in the field. At the same time, the backcross male parent Weimai No. 8 of the blue dwarf was planted as a reference control. We plant 3 rows for each individual plant, use a 6-row plant row / ear row seeder, sow 2 individual plants in each node, the row length is 2 meters, the small walkway between nodes...

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Abstract

The invention discloses a breeding method of wheat dwarf-stem germplasm and belongs to the field of wheat breeding. White seeds are selected from a blue, dwarf and abortion homozygous backcross group and are planted; by adopting a relatively wide large-small-row mode, a lower-layer space has a relatively good illumination condition and the like so that separated dwarf-stem plants can normally grow and develop; and found dwarf-stem plants are marked by hanging boards, and plants on the adjacent two sides are sheared off, so that the dwarf-stem plants can obtain relatively much illumination and can be normally pollinated and fruited. Furthermore, by comparing strains, the predicated dwarf-stem germplasm is cultured. The dwarf-stem germplasm is a product obtained by breaking through linkage and carrying out property exchange on blue, dwarf and abortion linked properties; and with the adoption of the manner, the dwarf-stem germplasm which is designed in advance and can be predicated can be obtained by breeding the main properties, and the breeding method has important meanings on high-yield lodging-resistant breeding. The bred dwarf-stem germplasm has very good foreseeability and repeatability; and the breeding method is simple, convenient and feasible.

Description

technical field [0001] The invention relates to the field of wheat breeding, in particular to a method for breeding dwarf germplasm of wheat. Background technique [0002] The improvement of wheat yield is currently in the climbing stage, and breeding is becoming more and more difficult. The lack of germplasm resources and the narrow genetic basis are the bottleneck factors restricting breeding. Therefore, germplasm innovation, especially the innovation of germplasm resource selection methods and technologies more important. At present, wheat breeding still needs to solve the contradiction between high yield and lodging, and the directional cultivation of dwarf germplasm resources is of great significance. [0003] There are many methods for screening dwarf germplasm, but there are randomness and unpredictability in breeding germplasm. Contents of the invention [0004] In order to make up for the deficiencies in the prior art, the present invention provides a method for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/04
Inventor 耿爱民武利峰刘渤邱超周江明张小燕尤晓胜李金杨淑华张志峰苏洪岭仝连芳伏卉
Owner 滨州市作物研究所
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