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116639

ESTIMATION OF SOME GENETIC PARAMETERS FOR SOME AGRONOMIC CHARACTERISTICS IN THREE CROSSES OF BREAD WHEAT

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Last updated: 22 Jan 2023

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Abstract

Six populations; P1, P2, F1, F2, BC1 and BC2 were used in this study to determine quantitative genetic parameters.  The means of the  six generations were recorded  for number of days to heading , days to physiological maturity, plant height, number of spikes per plant, number of kernels per spike, 100-kernel weight and grain yield per plant in  three crosses namely; Giza 168 × Gemmiza 10, Giza 168 × Sakha 69 and Sakha 69 × Giza 163 generated from four diverse parents. The experiment was conducted in 2005/06, 2006/07 and 2007/08 wheat-growing seasons at Sakha Agric. Res. Station. Analyzed data revealed that sufficient genetic variations were found among generations for all the characters studied in all crosses. The results of the genetic analysis showed that the genetic variance among F2 plants were genetically different for all studied characters in the three wheat crosses except for 100-kernel weight  in the cross Giza 168 × Gemmiza 10. The additive, dominance and epistatic gene effects were important in controlling the inheritance of number of days to heading, number of spikes per plant, number of kernels per spike and grain yield. Heritability estimates in broad and narrow senses were generally moderate to high for most studied characters in the three crosses. The expected genetic advance estimates from selection in the F2 were low for days to heading and days to physiological maturity, 100-kernel weight in crosses Giza 168 × Gemmiza 10 and Giza 168 × Sakha 69 and for plant height in cross Sakha 69 × Giza 163. Average degree of dominance was less than unity for days to physiological maturity in cross Giza 168 × Gemmiza 10, for plant height in cross Giza 168 × Sakha 69 and for grain yield per plant in the three crosses indicating the presence of partial dominance. Significant heterosis estimates were obtained for days to heading, days to physiological maturity, plant height and 100-kernel weight in most crosses.

DOI

10.21608/jpp.2009.116639

Keywords

Bread wheat, Joint scaling test, gene effects, heritability

Authors

First Name

Magda E.

Last Name

Abd El-Rahman

MiddleName

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Affiliation

Wheat Research Dept., Field Crops Research Institute, ARC. Egypt

Email

magdamoafi@hotmail.com

City

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Orcid

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First Name

S. M.

Last Name

Hammad

MiddleName

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Affiliation

Wheat Research Dept., Field Crops Research Institute, ARC. Egypt

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Volume

34

Article Issue

2

Related Issue

17618

Issue Date

2009-02-01

Receive Date

2020-10-03

Publish Date

2009-02-01

Page Start

1,091

Page End

1,100

Print ISSN

2090-3669

Online ISSN

2090-374X

Link

https://jpp.journals.ekb.eg/article_116639.html

Detail API

https://jpp.journals.ekb.eg/service?article_code=116639

Order

3

Type

Original Article

Type Code

887

Publication Type

Journal

Publication Title

Journal of Plant Production

Publication Link

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

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Article

Created At

22 Jan 2023