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Partial Resistance of Late Wilt Disease Caused by <i>Magnaporthiopsis maydis</i> in Certain Egyptian Maize Hybrids

Article

Last updated: 25 Dec 2024

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Abstract

Late wilt, triggered by Magnaporthiopsis maydis, is threatening maize productivity in temperate countries. The disease is mostly managed by genetic resistance, which is frequently exhibited partially in the field. Fifteen maize hybrids were investigated for their partial resistance to late wilt disease in two Agricultural Research Stations, Gemmeiza and Sids in the 2021 and 2022 growing seasons. Two epidemiological parameters were used to characterize this type of resistance in the examined maize hybrids at the adult plant stage: final disease incidence (FDI%) and area under disease progress curve (AUDPC). The hybrids HYTECH-TWC1100, PIONEER-SC30K9, and HYTECH-SC2031 exhibited slower disease progression (less than 7.67%) throughout the plant cycle in all trials compared with the check hybrid Boushy (above 54.63%). The genetic composition of the examined maize hybrids was responsible for more than 80% of the variability in how the hybrids responded to late wilt. In the changes of FDI (%) and AUDPC, the relative contribution of the environment (locations) was relatively low (less than 1%). Due to strong heritability estimates (up to 99%) and high values of genetic progress of more than 80% of the two parameters under the 2021 and 2022 growing seasons, the phenotypic changes were attributed to the genetic structures of the genotypes. The agronomic characteristics of the evaluated hybrids demonstrated a significant positive relationship between LWD resistance and grain yield per plant, as well as hundred kernel weight, plant height, and ear length. The principal component analysis demonstrated the significance of FDI (%) and 100 kernel weight as appropriate evidence for assessing these materials for late wilt disease.

DOI

10.21608/ejp.2023.210777.1093

Keywords

Maize, <i>Zea mays</i>, genotypes, <i>Magnaporthiopsis maydis</i>, partial resistance (PR), AUDPC, genetic advance, heritability, Principal component analysis

Authors

First Name

Walaa

Last Name

Abdelghany

MiddleName

R.

Affiliation

Plant Pathology Research Institute, Agricultural Research Center, 12619, Giza, Egypt.

Email

walaa.rabie@arc.sci.eg

City

-

Orcid

0000-0002-2259-2110

First Name

Abdelnaser

Last Name

EL-Sayed

MiddleName

B.B.

Affiliation

Plant Pathology Research Institute, Agricultural Research Center, 12619, Giza, Egypt.

Email

badwyelsayed45@gmial.com

City

Giza

Orcid

-

First Name

Doaa

Last Name

Kafsheer

MiddleName

A.

Affiliation

Plant Pathology Research Institute, Agricultural Research Center, 12619, Giza, Egypt.

Email

doaa-khalil@arc.sci.eg

City

Giza

Orcid

-

First Name

Abed

Last Name

Ata

MiddleName

A.

Affiliation

Plant Pathology Research Institute, Agricultural Research Center, 12619, Giza, Egypt.

Email

abedata2006@yahoo.com

City

Giza

Orcid

-

First Name

Reda

Last Name

Omara

MiddleName

I.

Affiliation

Plant Pathology Research Institute, Agricultural Research Center, 12619, Giza, Egypt.

Email

redaomara43@gmail.com

City

Giza

Orcid

0000-0002-9776-0238

Volume

51

Article Issue

1

Related Issue

39590

Issue Date

2023-06-01

Receive Date

2023-05-14

Publish Date

2023-06-22

Page Start

76

Page End

92

Print ISSN

1110-0230

Online ISSN

2090-2522

Link

https://ejp.journals.ekb.eg/article_304833.html

Detail API

https://ejp.journals.ekb.eg/service?article_code=304833

Order

304,833

Type

Original Article

Type Code

1,256

Publication Type

Journal

Publication Title

Egyptian Journal of Phytopathology

Publication Link

https://ejp.journals.ekb.eg/

MainTitle

Partial Resistance of Late Wilt Disease Caused by <i>Magnaporthiopsis maydis</i> in Certain Egyptian Maize Hybrids

Details

Type

Article

Created At

25 Dec 2024