Unlock instant, AI-driven research and patent intelligence for your innovation.

Long-term wheat stem rust Ug99 resisting breeding method

A wheat stalk, ug99 technology, applied in the agricultural field, can solve the problem of no one reporting aggregation, and achieve the effect of reducing blindness of selection, shortening breeding years, and speeding up the experimental process

Inactive Publication Date: 2020-01-10
CHINA ACAD OF SCI NORTHWEST HIGHLAND BIOLOGY INST
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far no one has reported the simultaneous aggregation of several Sr genes in breeding lines

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Long-term wheat stem rust Ug99 resisting breeding method
  • Long-term wheat stem rust Ug99 resisting breeding method
  • Long-term wheat stem rust Ug99 resisting breeding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The technical solution of the present invention will be further described in detail below in conjunction with the embodiments.

[0027] 1. Materials and technical solutions:

[0028] 1.1 Material

[0029] Ps4-1 is a wheat strain that contains stalk rust resistance genes Sr33, Sr36, Sr Cad, Sr 43 and unknown stripe rust resistance genes provided by the partner, Dr. George Fedak of the Canadian Department of Agriculture.

[0030] Plateau 448 is currently widely planted in Northwest China such as Qinghai and Gansu. High yield, good flour quality, good agronomic characteristics, wide application range, but not resistant to TTKSK and stripe rust.

[0031] 1.2 Technical route

[0032] The hybridization of Ps4-1 with multiple Ug99 disease resistance genes and plateau 448 combined with phenotype supplemented with molecular marker selection. The specific implementation plan is as figure 1 . From F 2 Among the generation plants, single plants containing 3-4 Sr genes were screened by mole...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a long-term wheat stem rust Ug99 resisting breeding method, and relates to molecular marker-assisted selection, cross breeding and backcross breeding. A Qinghai local main cultivar plateau 448 is hybridized with a germplasm resource material Ps4-1 polymerizing four stem rust Ug99 resisting micro-species genes Sr33, Sr36, Sr42 and Sr43, and the plateau 448 serving as a recurrent parent is backcrossed once. Each generation is selected by molecular markers Xcfd15, STM773-2, FSD-RSA and Cfa2040 closely linked with target genes, and a large number of stem rust Ug99 high-resistance or nearly immune high-generation strains are acquired at present. By application of molecular marker-assisted selection, the experimental process of stem rust resisting breeding is accelerated,selection blindness of breeding operation is decreased, and breeding age limit is shortened.

Description

Technical field [0001] The invention belongs to the technical field of agriculture and relates to a breeding method for long-lasting resistance to wheat stem rust Ug99. Background technique [0002] Wheat stalk rust (Puccinia graminis f.sp.tritici) is a global wheat disease that is extremely destructive to wheat. It has experienced devastating disasters in most wheat-growing countries and regions (Wang Guangjin et al., 2010). Wheat stem rust mainly occurs in the base of wheat leaves, sheaths and stems. In severe cases, obvious plaques can be seen in the glumes of the ears. Stem rust spores usually invade the above-mentioned parts of wheat three weeks before maturity. After 1-2 days of infection, chlorosis spots appear at the infected parts, and after 7-15 days, brick red urcella pustules appear in the original chlorosis parts of leaves and stems. (Song Weifu et al., 2010). The spores enter the leaf stem tissue through the stomata, destroy the photosynthetic area of ​​the leaf a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A01H1/02A01H1/04C12Q1/6895
CPCA01H1/02A01H1/04C12Q1/6895C12Q2600/13
Inventor 张波张怀刚刘韬刘宝龙冯承彬
Owner CHINA ACAD OF SCI NORTHWEST HIGHLAND BIOLOGY INST