Variance components in recombinant inbred lines of Tef [Eragrostis tef (Zucc.) Trotter L.]: Estimation and their implications in selection

Tef [Eragrostis tef (Zucc.) Trotter L.] is an indigenous and important cereal crop in Ethiopia. Its improvement is dependent on the presence and magnitude of genetic variation among traits in a given environment. Forty-nine tef genotypes (RILs and checks) were evaluated in 2019 to assess the nature...

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Autores principales:	Ephrem Worku Tesfa, Tiegist Dejene Abebe, Fisseha Worede
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	coefficient of variation eragrostis tef genetic advance heritability recombinant inbred lines Agriculture S Food processing and manufacture TP368-456
Acceso en línea:	https://doaj.org/article/02e117ea647c4d269e9bb2d8cca77b73
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spelling	oai:doaj.org-article:02e117ea647c4d269e9bb2d8cca77b732021-12-01T14:41:00ZVariance components in recombinant inbred lines of Tef [Eragrostis tef (Zucc.) Trotter L.]: Estimation and their implications in selection2331-193210.1080/23311932.2021.2005896https://doaj.org/article/02e117ea647c4d269e9bb2d8cca77b732021-01-01T00:00:00Zhttp://dx.doi.org/10.1080/23311932.2021.2005896https://doaj.org/toc/2331-1932Tef [Eragrostis tef (Zucc.) Trotter L.] is an indigenous and important cereal crop in Ethiopia. Its improvement is dependent on the presence and magnitude of genetic variation among traits in a given environment. Forty-nine tef genotypes (RILs and checks) were evaluated in 2019 to assess the nature of genetic variability, broad sense heritability and genetic advance of traits using 7 × 7 simple lattice design. Analysis of variance revealed significant (P ≤ 0.05) differences among the genotypes except for thousand seed weight. About 53% of the genotypes provided higher yield than the latest improved variety (Ebba), implied that most of the studied RILs varied for grain yield. Higher phenotypic and genotypic coefficients of variation found for main shoot panicle weight, main shoot panicle grain yield, fertile tiller number and days to heading, grain-filling period, main-shoot panicle length, total-tiller number, fertile-tiller number, main-shoot panicle weight, main-shoot panicle grain yield, grain yield and harvest index, implying the presence of adequate variability within the genotypes for these traits. High values of broad sense heritability coupled with high genetic advance as percent of the mean were observed for days to heading, grain-filling period, peduncle length, fertile-tiller number and grain yield indicating the contribution of additive genes for trait expression and possibility of traits improvement through direct selection. Generally, this considerable genetic variability among the RILs confirmed the possibility of improving tef productivity, while most of these RILs should further be studied on more test locations.Ephrem Worku TesfaTiegist Dejene AbebeFisseha WoredeTaylor & Francis Grouparticlecoefficient of variationeragrostis tefgenetic advanceheritabilityrecombinant inbred linesAgricultureSFood processing and manufactureTP368-456ENCogent Food & Agriculture, Vol 7, Iss 1 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	coefficient of variation eragrostis tef genetic advance heritability recombinant inbred lines Agriculture S Food processing and manufacture TP368-456
spellingShingle	coefficient of variation eragrostis tef genetic advance heritability recombinant inbred lines Agriculture S Food processing and manufacture TP368-456 Ephrem Worku Tesfa Tiegist Dejene Abebe Fisseha Worede Variance components in recombinant inbred lines of Tef [Eragrostis tef (Zucc.) Trotter L.]: Estimation and their implications in selection
description	Tef [Eragrostis tef (Zucc.) Trotter L.] is an indigenous and important cereal crop in Ethiopia. Its improvement is dependent on the presence and magnitude of genetic variation among traits in a given environment. Forty-nine tef genotypes (RILs and checks) were evaluated in 2019 to assess the nature of genetic variability, broad sense heritability and genetic advance of traits using 7 × 7 simple lattice design. Analysis of variance revealed significant (P ≤ 0.05) differences among the genotypes except for thousand seed weight. About 53% of the genotypes provided higher yield than the latest improved variety (Ebba), implied that most of the studied RILs varied for grain yield. Higher phenotypic and genotypic coefficients of variation found for main shoot panicle weight, main shoot panicle grain yield, fertile tiller number and days to heading, grain-filling period, main-shoot panicle length, total-tiller number, fertile-tiller number, main-shoot panicle weight, main-shoot panicle grain yield, grain yield and harvest index, implying the presence of adequate variability within the genotypes for these traits. High values of broad sense heritability coupled with high genetic advance as percent of the mean were observed for days to heading, grain-filling period, peduncle length, fertile-tiller number and grain yield indicating the contribution of additive genes for trait expression and possibility of traits improvement through direct selection. Generally, this considerable genetic variability among the RILs confirmed the possibility of improving tef productivity, while most of these RILs should further be studied on more test locations.
format	article
author	Ephrem Worku Tesfa Tiegist Dejene Abebe Fisseha Worede
author_facet	Ephrem Worku Tesfa Tiegist Dejene Abebe Fisseha Worede
author_sort	Ephrem Worku Tesfa
title	Variance components in recombinant inbred lines of Tef [Eragrostis tef (Zucc.) Trotter L.]: Estimation and their implications in selection
title_short	Variance components in recombinant inbred lines of Tef [Eragrostis tef (Zucc.) Trotter L.]: Estimation and their implications in selection
title_full	Variance components in recombinant inbred lines of Tef [Eragrostis tef (Zucc.) Trotter L.]: Estimation and their implications in selection
title_fullStr	Variance components in recombinant inbred lines of Tef [Eragrostis tef (Zucc.) Trotter L.]: Estimation and their implications in selection
title_full_unstemmed	Variance components in recombinant inbred lines of Tef [Eragrostis tef (Zucc.) Trotter L.]: Estimation and their implications in selection
title_sort	variance components in recombinant inbred lines of tef [eragrostis tef (zucc.) trotter l.]: estimation and their implications in selection
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/02e117ea647c4d269e9bb2d8cca77b73
work_keys_str_mv	AT ephremworkutesfa variancecomponentsinrecombinantinbredlinesofteferagrostistefzucctrotterlestimationandtheirimplicationsinselection AT tiegistdejeneabebe variancecomponentsinrecombinantinbredlinesofteferagrostistefzucctrotterlestimationandtheirimplicationsinselection AT fissehaworede variancecomponentsinrecombinantinbredlinesofteferagrostistefzucctrotterlestimationandtheirimplicationsinselection
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Variance components in recombinant inbred lines of Tef [Eragrostis tef (Zucc.) Trotter L.]: Estimation and their implications in selection

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