95838

Generation Mean Analysis and Molecular Markers for Salinity Tolerance during Wheat Germination and Seedling Stage

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Last updated: 04 Jan 2025

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Abstract

Generation mean analysis for salt tolerance in wheat was studied on P1, P2, F1, F2, BC1 and BC2 populations of three crosses. The cross-1 was between the salt tolerant Sakha-8 and sensitive Sham-8, cross-2 was between two salt tolerant varieties (Sakha-8 x Line-6) while cross-3 was between salt tolerant Line-6 and sensitive Sham-8. The genotypes were evaluated under control (0.0 mM NaCl) and salinity stress (150.0 mM NaCl) at germination and seedling stage for seven traits. The model of additive/dominance is inadequate for explaining the inheritance of all traits in control and salinity treatments in three crosses. The presence of epistasis in addition to the predominance of non-additive gene effects for all traits except SL indicated that the conventional selection procedure may not be effective enough to improve them. Therefore postponement of plant selection in later generations or the crosses between the selected segregants followed by selfing can be suggested to accumulate alleles favorable for the improvement of these traits. The molecular markers analysis revealed that only four SRAP primer combinations, three TRAP primer combinations and three SSR primer pairs generated polymorphic bands form the tested genotypes. The five polymorphic bands SRAP-2570bp, SRAP-3760bp, TRAP-1205bp, TRAP-3450bp and SSR-2215bp appeared only in the tolerant genotypes. These markers may be considered as specific markers for salt tolerance. The identified markers in this study would allow implementation of marker-assisted selection to screen wheat segregating populations for salt tolerance.

DOI

10.21608/jacb.2020.95838

Keywords

Triticum aestivum L, salt tolerance, Generation Mean Analysis, bulk segregant analysis, SRAP, SSR, TRAP

Authors

First Name

M.

Last Name

Mahmoud

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Affiliation

Genetic Department, Faculty of Agriculture and Natural Resources, Aswan University, Egypt

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First Name

H.

Last Name

El-Aref

MiddleName

M.

Affiliation

Genetic Department, Faculty of Agriculture, Assiut University, Egypt

Email

hmelaref@yahoo.com

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Orcid

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First Name

A.

Last Name

Taghian

MiddleName

S.

Affiliation

Genetic Department, Faculty of Agriculture, Assiut University, Egypt

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-

First Name

B.

Last Name

Abd El-Fatah

MiddleName

E. S.

Affiliation

Genetic Department, Faculty of Agriculture, Assiut University, Egypt

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-

First Name

M.

Last Name

Abou-Ellail

MiddleName

A.

Affiliation

Genetic Department, Faculty of Agriculture and Natural Resources, Aswan University, Egypt

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Volume

11

Article Issue

4

Related Issue

13069

Issue Date

2020-04-01

Receive Date

2020-06-14

Publish Date

2020-04-01

Page Start

85

Page End

95

Print ISSN

2090-3626

Online ISSN

2090-3707

Link

https://jacb.journals.ekb.eg/article_95838.html

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https://jacb.journals.ekb.eg/service?article_code=95838

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Original Article

Type Code

883

Publication Type

Journal

Publication Title

Journal of Agricultural Chemistry and Biotechnology

Publication Link

https://jacb.journals.ekb.eg/

MainTitle

Generation Mean Analysis and Molecular Markers for Salinity Tolerance during Wheat Germination and Seedling Stage

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Article

Created At

22 Jan 2023