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85617

HETEROSIS, CORRELATION AND PATH COEFFICIENT ANALYSIS FOR FORAGE YIELD AND ITS CONTRIBUTING TRAITS OF MAIZE X TEOSINTE HYBRIDS IN TWO SEASONS

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Last updated: 04 Jan 2025

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Abstract

A local ecotype of teosinte (Euchlaena mexicana Schrad.) and eight different maize (Zea mays L.) genotypes were crossed to generate eight crosses as well as their eight reciprocals to study the heterosis, nature of associations between dry forage yield and its contributing traits at the phenotypic level in addition to detect the relative importance of each yield component in determining plant dry forage yield variation through path coefficient analysis. The obtained results revealed that the two crosses ((P6 x P1 and P1 x P7) exhibited the maximum heterosis % over better parent for dry forage yield plant-1 in both seasons. These crosses could be considered as promising crosses for teosinte improvement. Correlation coefficients among studied traits indicated that dry forage yield was positively and significantly associated with  tillers plant-1 and leaf area in both crosses  and their reciprocals as well as with  plant height in maize x teosinte crosses and with  protein content in teosinte x maize crosses in both seasons as well as with stem diameter  in 2008 season . The path coefficient analysis indicated that both number of tillers plant-1 and plant height had the highest positive direct effects on dry forage yield plant-1 in both maize x teosinte and teosinte x maize crosses during both seasons. Thus, dry forage yield improvement can be achieved through selection for more tillers and taller plants. 

DOI

10.21608/jpp.2011.85617

Keywords

Maize x Teosinte cross, Teosinte x Maize cross, Heterosis, correlation, Path coefficient analysis, dry forage yield, yield components, seasons

Authors

First Name

Hoda

Last Name

Ibrahim

MiddleName

I. M.

Affiliation

Forage Crops Research Department, FCRI, ARC, Giza, Egypt.

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First Name

Wafaa

Last Name

Sharawy

MiddleName

M.

Affiliation

Forage Crops Research Department, FCRI, ARC, Giza, Egypt.

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City

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Orcid

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First Name

Amal

Last Name

Helmy

MiddleName

A.

Affiliation

Forage Crops Research Department, FCRI, ARC, Giza, Egypt.

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Volume

2

Article Issue

6

Related Issue

12894

Issue Date

2011-06-01

Receive Date

2020-04-25

Publish Date

2011-06-01

Page Start

837

Page End

849

Print ISSN

2090-3669

Online ISSN

2090-374X

Link

https://jpp.journals.ekb.eg/article_85617.html

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https://jpp.journals.ekb.eg/service?article_code=85617

Order

6

Type

Original Article

Type Code

887

Publication Type

Journal

Publication Title

Journal of Plant Production

Publication Link

https://jpp.journals.ekb.eg/

MainTitle

HETEROSIS, CORRELATION AND PATH COEFFICIENT ANALYSIS FOR FORAGE YIELD AND ITS CONTRIBUTING TRAITS OF MAIZE X TEOSINTE HYBRIDS IN TWO SEASONS

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Article

Created At

22 Jan 2023