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74664

GENETICS OF ADULT-PLANT STEM RUST RESISTANCE IN SIX EGYPTIAN BREAD WHEAT CULTIVARS

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Last updated: 22 Jan 2023

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Abstract

This investigation was carried out to identify stem rust resistance genes in the six Egyptian bread wheat cultivars Sakha 93, Sids 1, Gemmeiza 10, Gemmeiza 11, Misr 1 and Misr 2. F1 seed were developedfrom the crosses between the six wheat cultivars and each of the wheat monogenic lines of Sr 11, Sr 32, Sr 33 and Sr 40 in 2012/2013 season. In the next season, 2013/2014, F2 plants were tested under field conditions after artificial inoculation with a mixture of stem rust physiological races at Sids Agricultural Research Station, ARC, Egypt. Chi-square test was used to test the fitness of segregation in F2 plants for each cross to the expected ratios. Out of the six wheat cultivars, the two cultivars Sids 1 and Gemmeiza 10 showed no or negligible  segregations in F2 crosses between them and each of the four stem rust monogenic lines. All or majority of F2 plants showed resistant type of reaction to stem rust under field conditions indicating that both cultivars expected to carry Sr 11, Sr 32, Sr 33 and Sr 40 adult-plant stem rust resistance genes. On the other hand, the remaining four wheat cultivars, Sakha 93, Gemmeiza 11, Misr 1 and Misr 2 showed significant segregation in their F2 crosses with the monogenic lines. Segregations among F2 plants were toward resistance in the crosses with the two cultivars Sakha 93 and Gemmeiza 11 while it was toward susceptibility in the crosses with the two cultivars Misr 1 and Misr 2.  Resistance found to be dominant over susceptibility in the crosses between the two cultivars Sakha 93 and Gemmeiza 11 and the monogenic lines except for the cross Sakha 93 x Sr 32. Meanwhile, susceptibility was dominant over resistance in the crosses between the two cultivars Misr 1 and Misr 2 and the monogenic lines. The results of this study indicate the importance of the two Egyptian bread wheat cultivars Sids 1 and Gemmeiza 10 as a source of adult-plant stem rust resistance genes which could be utilized in wheat breeding program for improving stem rust resistance in Egypt.   

DOI

10.21608/jppp.2015.74664

Keywords

Wheat, adult-plant resistance and stem rust (Puccinia graminis f sp. Tritici)

Authors

First Name

M.

Last Name

Abdalla

MiddleName

E.

Affiliation

Plant Pathology Dept., Fac. of Agric., Mansoura Univ., Egypt

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First Name

Walaa

Last Name

Tawfik

MiddleName

A.

Affiliation

Plant Protection Research Institute, Agricultural Research Center, Dokki Giza, Egypt.

Email

walaaabdelmoaty81@gmail.com

City

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Orcid

-

First Name

A.

Last Name

Hagras

MiddleName

A.

Affiliation

Wheat Research Department, FCRI, ARC, Egypt

Email

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City

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Orcid

-

First Name

Nadia

Last Name

Mohamed

MiddleName

E.

Affiliation

Plant Protection Research Institute, Agricultural Research Center, Dokki Giza, Egypt.

Email

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City

-

Orcid

-

First Name

A.

Last Name

Ghanim

MiddleName

A.

Affiliation

Economic Entomology Department, Faculty of Agriculture, Mansoura University, Egypt.

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Orcid

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First Name

S.

Last Name

Negm

MiddleName

S.

Affiliation

Wheat Disease Research Department, PPRI, ARC, Egypt

Email

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City

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Orcid

-

First Name

O.

Last Name

El-Sayed

MiddleName

A.

Affiliation

Wheat Disease Research Department, PPRI, ARC, Egypt

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Volume

6

Article Issue

7

Related Issue

11285

Issue Date

2015-07-01

Receive Date

2020-03-01

Publish Date

2015-07-01

Page Start

997

Page End

1,006

Print ISSN

2090-3677

Online ISSN

2090-3758

Link

https://jppp.journals.ekb.eg/article_74664.html

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https://jppp.journals.ekb.eg/service?article_code=74664

Order

2

Type

Original Article

Type Code

888

Publication Type

Journal

Publication Title

Journal of Plant Protection and Pathology

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https://jppp.journals.ekb.eg/

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Article

Created At

22 Jan 2023