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233582

GENETIC EVALUATION OF COTTON RECOMBINATIONS PRODUCED BY BIPARENTAL MATING SYSTEM

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Last updated: 04 Jan 2025

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Abstract

Thirty-six cotton progenies were produced by using biparental mating of 58.58 x G.91 F2 with their parents to study the extent of this system in breaking unfavorable linkage groups and obtaining new promising recombinations. North Carolina Design III was used to estimate mean performances of the progenies, the phenotypic variances and their components, heritabilities and genetic correlations for yield, its components, earliness and some fiber traits. Generally the progenies derived from G.91 exhibited higher yield and yield components, on the other hand, the progenies of the second parent SB.58 showed better performance for fiber baits. While, there were only two progenies of G.91 behaved earlier performance for days to first flower trait comparing to other progenies of both parents. The proportional contribution values of males were higher for all studied traits with exception for miaonaire value and uniformity ratio characters. The results also, revealed that the additive variances playing a major role of the inheritance of all studied characters except uniformity ,ratio, indicating that the direct selection could improve these traits. Positive additive genetic correlations were detected for seed cotton yield with boll number and for boll weight with seed index, suggesting the effectiveness of indirect selection for improvement of yield and boll weight by selection for their related characters. The positive and negative dominance correlations which were detected for some traits are of interest in explaining the relatively high degree of heterotic association among traits.

DOI

10.21608/ejar.2006.233582

Authors

First Name

HISHAM M. KH.

Last Name

HEMAIDA

MiddleName

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Affiliation

Cotton Research Institute, Agricultural Research Center, Giza, Egypt.

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Volume

84

Article Issue

4

Related Issue

33286

Issue Date

2006-12-01

Receive Date

2005-12-14

Publish Date

2006-12-01

Page Start

1,227

Page End

1,239

Print ISSN

1110-6336

Online ISSN

2812-4936

Link

https://ejar.journals.ekb.eg/article_233582.html

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https://ejar.journals.ekb.eg/service?article_code=233582

Order

20

Type

Original Article

Type Code

1,041

Publication Type

Journal

Publication Title

Egyptian Journal of Agricultural Research

Publication Link

https://ejar.journals.ekb.eg/

MainTitle

GENETIC EVALUATION OF COTTON RECOMBINATIONS PRODUCED BY BIPARENTAL MATING SYSTEM

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Article

Created At

22 Jan 2023