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53501

TYPE GENE ESTIMATION ACTION FOR GRAIN YIELD IN SOME NEW WHITE MAIZE (Zea mays L.) INBRED LINE USING TOP CROSS.

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Last updated: 04 Jan 2025

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Abstract

Twenty five white maize inbred lines were topcrossed to each of two white line  testers, i.e. Sd 7 and Sd 63 in 2011 summer season. The results of 50 topcrosses along with is parents (25 inbred lines and two testers) and two check hybrids, i.e SC 10 and SC 128 were evaluated in 2012 growing season at two locations (Gemmeiza  and Mallawy). Results clearly showed that, partition sum of squares due to crosses into its components showed that mean squares due to lines and testers  were  highly significant for all traits. Non-additive gene effects were more important than additive ones in the inheritance of all traits under combined data and the ratio of (GCA)  x L / SCA x L was less than unity for all traits. The tester Sd 7 exhibited highly positive(g^i) for grain yield, while the female Gm. 30,  Gm. 35, Gm. 36, Gm. 54 and Gm. 58 had  desirable positive and significant (g^i) for grain yield. The crosses (Gm. 30 x Sd.7),(Gm. 36 x Sd.7) and (Gm. 58 x Sd.7)   considered the best crosses  for grain yield and could be used as good  hybrids  in maize breeding programs.

DOI

10.21608/jpp.2014.53501

Keywords

Maize, top cross, Tester, Inbred Lines, Combining ability, Variance

Authors

First Name

M.

Last Name

Osman

MiddleName

M. A.

Affiliation

Maize Res. Section, Field Crops Res. Inst. Agric. Res. Canter, Egypt.

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Volume

5

Article Issue

2

Related Issue

8185

Issue Date

2014-02-01

Receive Date

2019-10-15

Publish Date

2014-02-01

Page Start

183

Page End

192

Print ISSN

2090-3669

Online ISSN

2090-374X

Link

https://jpp.journals.ekb.eg/article_53501.html

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https://jpp.journals.ekb.eg/service?article_code=53501

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Original Article

Type Code

887

Publication Type

Journal

Publication Title

Journal of Plant Production

Publication Link

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

MainTitle

TYPE GENE ESTIMATION ACTION FOR GRAIN YIELD IN SOME NEW WHITE MAIZE (Zea mays L.) INBRED LINE USING TOP CROSS.

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Article

Created At

22 Jan 2023