163544

VARIABILITY AND COVARIABILITY OF AGRONOMIC CHARACTERISTICS IN 14 KENAF GENOTYPES

Article

Last updated: 04 Jan 2025

Subjects

-

Tags

-

Abstract

A field experiment was conducted during 2009, 2010 and 2011 seasons at Ismailia Agricultural Research station, Ismailia Governorate, Egypt, to study the variability and covariability of 14 kenaf genotypes including green stalk yield, fiber yield and their related characters. The experimental design was randomized complete block with three replications per each of the three environments (seasons ). Mean square values showed highly significant differences among genotypes (G) and genotypes x environments (E) interaction for green stalk yield and its components viz.: plant height, technical stem length, fiber yield and fiber percentage as well as seed yield and fruiting zone length. Variances due to differences among genotypes (G) were higher than those due to the interaction (G x E) for all characters studied except fiber yield/fed. These results indicated that most of the variability for these traits were mainly controlled by genetic factors less influenced by environmental factors. This means that the improvement of these traits could be achieved by selection. Heritability values (Hb.s.) in broad sense were high for seed weight/plant followed by plant height and technical stem length. Also, the observed narrow range between phenotypic (PCV) and genotypic (GCV) coefficients of variability, which gave almost similar values of PCV and GCV for seed weight/plant were mainly due to genetic differences as evidenced from the very high heritability. Also, fiber weight per plant, plant height and technical stem length showed similar results, indicating the possibility of usingthese yield components in selection index giving more weight for plant height and technical stem length for improving green weight/plant. Kenaf cultivars, S.105/2 and S.96/20 proved maximum (first or second ranking for mean performance) for most characters studied. While, the first ranking was recorded by S.96/20 for seed yield per fed as well as S.116 for seed weight per plant and S.8 for fruiting zone length. Therefore, the previous mentioned genotypes specially S.105/2 may be released as a commercial cultivar and/or to be incorporated as breeding stocks in kenaf breeding program aiming at producing high yielding lines. Phenotypic and genotypic correlation coefficients among green stalk weight, fiber weight per plant and their related characters of 14 kenaf genotypes averaged over the three environments, indicated that, plant height and technicalstem length are the major components contributing to green stalk weight per plant. Therefore, selection for these traits may improve green stalk weight per plant and in turn fiber yield in kenaf.

DOI

10.21608/ejar.2013.163544

Keywords

AGRONOMIC CHARACTERISTICS

Authors

First Name

AFAF E.

Last Name

ZAHANA

MiddleName

-

Affiliation

Field Crops Res.Inst., ARC, Giza, Egypt

Email

-

City

-

Orcid

-

First Name

AMANY M.

Last Name

EL-REFAIE

MiddleName

-

Affiliation

Field Crops Res .Inst., ARC, Giza, Egypt

Email

-

City

-

Orcid

-

Volume

91

Article Issue

2

Related Issue

23720

Issue Date

2013-07-01

Receive Date

2012-07-29

Publish Date

2013-07-01

Page Start

629

Page End

639

Print ISSN

1110-6336

Online ISSN

2812-4936

Link

https://ejar.journals.ekb.eg/article_163544.html

Detail API

https://ejar.journals.ekb.eg/service?article_code=163544

Order

19

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

VARIABILITY AND COVARIABILITY OF AGRONOMIC CHARACTERISTICS IN 14 KENAF GENOTYPES

Details

Type

Article

Created At

22 Jan 2023