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155137

Bulked segregant analysis to identify SSR markers for loose smut resistance in bread wheat

Article

Last updated: 04 Jan 2025

Subjects

-

Tags

Genetics and Biotechnology

Abstract

The present study was conducted to evaluate 100 F8 recombinant inbred lines (RILs) derived from a cross between resistant and susceptible bread wheat landraces for loose smut caused by Ustilago tritici. Bulked segregant analysis (BSA) was also used to identify simple sequence repeats (SSR) markers associated with the resistance to loose smut. The artificial inoculation was repeated twice through two successive seasons (2017/2018 and 2018/2019) under greenhouse conditions, and responses of tested genotypes against loose smut were evaluated in 2018/2019 and 2019/2020 seasons. Highly significant differences (P<0.01) were observed for loose smut incidence among the tested RILs, indicating a considerable genetic variation. On average, loose smut incidence (LSI %) of the tested RILs ranged from 0% in RIL-64 to 97.5% in RIL-74 and RIL-93, with an average of 47.5%. Out of 100 RILs, the RIL-64 was considered as an immune genotype (no symptoms were observed on any plant), RIL-13, RIL-16, RIL-27 and RIL-37 were highly resistant (LSI= 5.0, 5.0, 2.5, 2.5%, respectively), and RIL-2, RIL-50 and RIL-96 were resistant to loose smut (LSI= 7.5, 7.5 and 10.0%, respectively), suggesting the usefulness of these genotypes for developing wheat varieties resistant to loose smut. BSA with forty two SSRs markers identified five positive alleles generated by Xgwm18-1B, Xgwm95-2A, Xgwm294-2A, Xgwm186-5A and Xgwm293-5A markers that were associated with loose smut resistance in the tested population, suggesting that several loci could be contributed to loose smut resistance in wheat. However further studies are still required to confirm usefulness of these markers in breeding programs.

DOI

10.21608/sjas.2021.62206.1070

Keywords

Bread wheat, Loose smut, disease resistance, Bulked Segregant Analysis, SSRs

Authors

First Name

Mohamed

Last Name

Hassan

MiddleName

I.

Affiliation

Department of Genetics, Faculty of Agriculture, Assiut University, Assiut, Egypt

Email

m_hassan79@aun.edu.eg

City

Assiut

Orcid

0000-0001-6608-2369

First Name

Amer

Last Name

Mahmoud

MiddleName

F.

Affiliation

Department of Plant Pathology, Faculty of Agriculture, Assiut University, Assiut, Egypt

Email

amermahmoud@aun.edu.eg

City

Assiut

Orcid

-

First Name

Karam

Last Name

Amein

MiddleName

A.

Affiliation

Department of Genetics, Faculty of Agriculture, Assiut University, Assiut, Egypt

Email

karamamein@aun.edu.eg

City

Assiut

Orcid

-

Volume

3

Article Issue

1

Related Issue

25269

Issue Date

2021-06-01

Receive Date

2021-02-08

Publish Date

2021-05-31

Page Start

119

Page End

130

Print ISSN

2535-1796

Online ISSN

2535-180X

Link

https://sjas.journals.ekb.eg/article_155137.html

Detail API

https://sjas.journals.ekb.eg/service?article_code=155137

Order

12

Type

Original Article

Type Code

916

Publication Type

Journal

Publication Title

Scientific Journal of Agricultural Sciences

Publication Link

https://sjas.journals.ekb.eg/

MainTitle

Bulked segregant analysis to identify SSR markers for loose smut resistance in bread wheat

Details

Type

Article

Created At

22 Jan 2023